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Cisco IOS IPv6 Command Reference
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IPv6 Commands: a to clear ipv6 mld
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IPv6 Commands: clear ipv6 mo to ct
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IPv6 Commands: d to im
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IPv6 Commands: ipv6 a to ipv6 g
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IPv6 Commands: ipv6 h to ipv6 mi
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IPv6 Commands: ipv6 mo to ipv6 ospf da
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IPv6 Commands: ipv6 ospf de to ipv6 sp
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IPv6 Commands: ipv6 su to m
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IPv6 Commands: n to re
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IPv6 Commands: ro to show bgp la
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IPv6 Commands: show bgp ipv6 ne to show ipv6 cef sw
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IPv6 Commands: show ipv6 cef tr to show ipv6 in
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IPv6 Commands: show ipv6 lo to show ipv6 mt
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IPv6 Commands: show ipv6 na to show ipv6 pr
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IPv6 Commands: show ipv6 ri to si
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IPv6 Commands: sn to v
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Index
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Feedback
Contents
IPv6 Commands: show ipv6 lo to show ipv6 mt
- show ipv6 local pool
- show ipv6 mfib
- show ipv6 mfib active
- show ipv6 mfib count
- show ipv6 mfib global
- show ipv6 mfib instance
- show ipv6 mfib interface
- show ipv6 mfib route
- show ipv6 mfib status
- show ipv6 mfib summary
- show ipv6 mld groups
- show ipv6 mld groups summary
- show ipv6 mld host-proxy
- show ipv6 mld interface
- show ipv6 mld snooping
- show ipv6 mld ssm-map
- show ipv6 mld traffic
- show ipv6 mobile binding
- show ipv6 mobile globals
- show ipv6 mobile home-agents
- show ipv6 mobile host groups
- show ipv6 mobile router
- show ipv6 mobile traffic
- show ipv6 mobile tunnels
- show ipv6 mrib client
- show ipv6 mrib route
- show ipv6 mroute
- show ipv6 mroute active
- show ipv6 mtu
show ipv6 local pool
To display information about any defined IPv6 address pools, use the show ipv6 local pool command in privileged EXEC mode.
Usage Guidelines
If you omit the poolnameargument, the command displays a generic list of all defined address pools and the IP addresses that belong to them. If you specify the poolname argument, the command displays detailed information about that pool.
Examples
The following command displays IPv6 prefix pool information, which includes cache statistics:
Router# show ipv6 local pool mypool Prefix is 2001:0DB8::/29 assign /64 prefix 2 entries in use, 254 available, 0 rejected 0 entries cached, 1000 maximum User Prefix Interface joe 3FFE:FFFF:A::/64 Vi1 john 3FFE:FFFF:A:1::/64 Vi2The following command displays IPv6 prefix pool information for all prefix pools:
Router# show ipv6 local pool Pool Prefix Free In use mypool 2001:0DB8::/29 65516 20 myrouter# myrouter# show ipv6 local pool mypool Prefix is 1234::/48 assign /64 prefix 20 entries in use, 65516 available, 0 rejected 0 entries cached, 1000 maximum User Prefix Interface user1-72b 1234::/64 Vi1.21 user1-72b 1234:0:0:1::/64 Vi1.22 user1-72b 1234:0:0:2::/64 Vi1.23 user1-72b 1234:0:0:3::/64 Vi1.24 user1-72b 1234:0:0:4::/64 Vi1.25 user1-72b 1234:0:0:5::/64 Vi1.26 user1-72b 1234:0:0:6::/64 Vi1.27 user1-72b 1234:0:0:7::/64 Vi1.28 user1-72b 1234:0:0:8::/64 Vi1.29 user1-72b 1234:0:0:9::/64 Vi1.30 user1-72b 1234:0:0:A::/64 Vi1.31 user1-72b 1234:0:0:B::/64 Vi1.32 user1-72b 1234:0:0:C::/64 Vi1.33 user1-72b 1234:0:0:D::/64 Vi1.34 user1-72b 1234:0:0:E::/64 Vi1.35 user1-72b 1234:0:0:F::/64 Vi1.36 user1-72b 1234:0:0:10::/64 Vi1.37 user1-72b 1234:0:0:11::/64 Vi1.38 user1-72b 1234:0:0:12::/64 Vi1.39 user1-72b 1234:0:0:13::/64 Vi1.40The table below describes the significant fields shown in the displays.
Table 1 show ipv6 local pool Field Descriptions Field
Description
Scope
The type of access.
Pool
Pool and group names and associations, if created.
Begin
The first IP address in the defined range of addresses in this pool.
End
The last IP address in the defined range of addresses in this pool.
Free
The number of addresses available.
InUse
The number of addresses in use.
show ipv6 mfib
To display the forwarding entries and interfaces in the IPv6 Multicast Forwarding Information Base (MFIB), use the show ipv6 mfib command in user EXEC or privileged EXEC mode.
Cisco 3660 Series Routers, Cisco 10000 Series Routers, and Catalyst 6500 Series Routers
show ipv6 mfib [ vrf vrf-name ] [ all | linkscope | verbose | group-address-name | ipv6-prefix/ prefix-length | source-address-name | interface | status | summary ]
Cisco 7600 Series Routers
show ipv6 mfib [ vrf vrf-name ] [ all | linkscope | verbose | interface | status | summary ]
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays all forwarding entries and interfaces in the IPv6 MFIB.
linkscope
(Optional) Displays the link-local groups.
verbose
(Optional) Provides additional information, such as the MAC encapsulation header and platform-specific information.
ipv6-prefix
(Optional) The IPv6 network assigned to the interface. The default IPv6 prefix is 128.
This argument must be in the form documented in RFC 2373 where the address is specified in hexadecimal using 16-bit values between colons.
/ prefix-length
(Optional) The length of the IPv6 prefix. A decimal value that indicates how many of the high-order contiguous bits of the address comprise the prefix (the network portion of the address). A slash mark must precede the decimal value.
group-address-name
(Optional) IPv6 address or name of the multicast group.
source-address-name
(Optional) IPv6 address or name of the multicast group.
interface
(Optional) Interface settings and status.
status
(Optional) General settings and status.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.2(18)SXE
Support for this command was added for the Supervisor Engine 720.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.3(4)T
The link-local keyword was added.
12.3(7)T
The ipv6-prefix and prefix-length arguments were added.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.0(1)M
This command was modified. The link-local keyword was changed to linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The vrf vrf-name keyword and argument were added.
Usage Guidelines
Use the show ipv6 mfib command to display MFIB entries; and forwarding interfaces, and their traffic statistics. This command can be enabled on virtual IP (VIP) if the router is operating in distributed mode.
A forwarding entry in the MFIB has flags that determine the default forwarding and signaling behavior to use for packets matching the entry. The entry also has per-interface flags that further specify the forwarding behavior for packets received or forwarded on specific interfaces. The table below describes the MFIB forwarding entries and interface flags.
Table 2 MFIB Entries and Interface Flags Flag
Description
F
Forward--Data is forwarded out of this interface.
A
Accept--Data received on this interface is accepted for forwarding.
IC
Internal copy--Deliver to the router a copy of the packets received or forwarded on this interface.
NS
Negate signal--Reverse the default entry signaling behavior for packets received on this interface.
DP
Do not preserve--When signaling the reception of a packet on this interface, do not preserve a copy of it (discard it instead).
SP
Signal present--The reception of a packet on this interface was just signaled.
S
Signal--By default, signal the reception of packets matching this entry.
C
Perform directly connected check for packets matching this entry. Signal the reception if packets were originated by a directly connected source.
Examples
The following example displays the forwarding entries and interfaces in the MFIB. The router is configured for fast switching, and it has a receiver joined to FF05::1 on Ethernet1/1 and a source (2001::1:1:20) sending on Ethernet1/2:
Router# show ipv6 mfib IP Multicast Forwarding Information Base Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag, AR - Activity Required, D - Drop Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second Other counts: Total/RPF failed/Other drops Interface Flags: A - Accept, F - Forward, NS - Negate Signalling IC - Internal Copy, NP - Not platform switched SP - Signal Present Interface Counts: FS Pkt Count/PS Pkt Count (*,FF00::/8) Flags: C Forwarding: 0/0/0/0, Other: 0/0/0 Tunnel0 Flags: NS (*,FF00::/15) Flags: D Forwarding: 0/0/0/0, Other: 0/0/0 (*,FF05::1) Flags: C Forwarding: 2/0/100/0, Other: 0/0/0 Tunnel0 Flags: A NS Ethernet1/1 Flags: F NS Pkts: 0/2 (2001::1:1:200,FF05::1) Flags: Forwarding: 5/0/100/0, Other: 0/0/0 Ethernet1/2 Flags: A Ethernet1/1 Flags: F NS Pkts: 3/2 (*,FF10::/15) Flags: D Forwarding: 0/0/0/0, Other: 0/0/0The table below describes the significant fields shown in the display.
Table 3 show ipv6 mfib Field Descriptions Field
Description
Entry Flags
Information about the entry.
Forwarding Counts
Statistics on the packets that are received from and forwarded to at least one interface.
Pkt Count/
Total number of packets received and forwarded since the creation of the multicast forwarding state to which this counter applies.
Pkts per second/
Number of packets received and forwarded per second.
Avg Pkt Size/
Total number of bytes divided by the total number of packets for this multicast forwarding state. There is no direct display for the total number of bytes. You can calculate the total number of bytes by multiplying the average packet size by the packet count.
Kbits per second
Bytes per second divided by packets per second divided by 1000.
Other counts:
Statistics on the received packets. These counters include statistics about the packets received and forwarded and packets received but not forwarded.
Interface Flags:
Information about the interface.
Interface Counts:
Interface statistics.
The following example shows forwarding entries and interfaces in the MFIB, with a group address of FF03:1::1 specified:
Router# show ipv6 mfib FF03:1::1 IP Multicast Forwarding Information Base Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag, AR - Activity Required, D - Drop Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second Other counts:Total/RPF failed/Other drops Interface Flags:A - Accept, F - Forward, NS - Negate Signalling IC - Internal Copy, NP - Not platform switched SP - Signal Present Interface Counts:FS Pkt Count/PS Pkt Count *,FF03:1::1) Flags:C Forwarding:0/0/0/0, Other:0/0/0 Tunnel1 Flags:A NS GigabitEthernet5/0.25 Flags:F NS Pkts:0/0 GigabitEthernet5/0.24 Flags:F NS Pkts:0/0 (5002:1::2,FF03:1::1) Flags: Forwarding:71505/0/50/0, Other:42/0/42 GigabitEthernet5/0 Flags:A GigabitEthernet5/0.19 Flags:F NS Pkts:239/24 GigabitEthernet5/0.20 Flags:F NS Pkts:239/24 GigabitEthernet5/0.21 Flags:F NS Pkts:238/24 . . . GigabitEthernet5/0.16 Flags:F NS Pkts:71628/24The following example shows forwarding entries and interfaces in the MFIB, with a group address of FF03:1::1 and a source address of 5002:1::2 specified:
Router# show ipv6 mfib FF03:1::1 5002:1::2 IP Multicast Forwarding Information Base Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag, AR - Activity Required, D - Drop Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second Other counts:Total/RPF failed/Other drops Interface Flags:A - Accept, F - Forward, NS - Negate Signalling IC - Internal Copy, NP - Not platform switched SP - Signal Present Interface Counts:FS Pkt Count/PS Pkt Count (5002:1::2,FF03:1::1) Flags: Forwarding:71505/0/50/0, Other:42/0/42 GigabitEthernet5/0 Flags:A GigabitEthernet5/0.19 Flags:F NS Pkts:239/24 GigabitEthernet5/0.20 Flags:F NS Pkts:239/24 . . . GigabitEthernet5/0.16 Flags:F NS Pkts:71628/24The following example shows forwarding entries and interfaces in the MFIB, with a group address of FF03:1::1 and a default prefix of 128:
Router# show ipv6 mfib FF03:1::1/128 IP Multicast Forwarding Information Base Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag, AR - Activity Required, D - Drop Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second Other counts:Total/RPF failed/Other drops Interface Flags:A - Accept, F - Forward, NS - Negate Signalling IC - Internal Copy, NP - Not platform switched SP - Signal Present Interface Counts:FS Pkt Count/PS Pkt Count (*,FF03:1::1) Flags:C Forwarding:0/0/0/0, Other:0/0/0 Tunnel1 Flags:A NS GigabitEthernet5/0.25 Flags:F NS Pkts:0/0 GigabitEthernet5/0.24 Flags:F NS Pkts:0/0 . . . GigabitEthernet5/0.16 Flags:F NS Pkts:0/0The following example shows forwarding entries and interfaces in the MFIB, with a group address of FFE0 and a prefix of 15:
Router# show ipv6 mfib FFE0::/15 IP Multicast Forwarding Information Base Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag, AR - Activity Required, D - Drop Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second Other counts:Total/RPF failed/Other drops Interface Flags:A - Accept, F - Forward, NS - Negate Signalling IC - Internal Copy, NP - Not platform switched SP - Signal Present Interface Counts:FS Pkt Count/PS Pkt Count (*,FFE0::/15) Flags:D Forwarding:0/0/0/0, Other:0/0/0The following example shows output of the show ipv6 mfib command used with the verbose keyword. It shows forwarding entries and interfaces in the MFIB and additional information such as the MAC encapsulation header and platform-specific information.
Router# show ipv6 mfib ff33::1:1 verbose IP Multicast Forwarding Information Base Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag, AR - Activity Required, K - Keepalive Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second Other counts: Total/RPF failed/Other drops Platform per slot HW-Forwarding Counts: Pkt Count/Byte Count Platform flags: HF - Forwarding entry,HB - Bridge entry,HD - NonRPF Drop entry, NP - Not platform switchable,RPL - RPF-ltl linkage, MCG - Metset change,ERR - S/w Error Flag,RTY - In RetryQ, LP - L3 pending,MP - Met pending,AP - ACL pending Interface Flags: A - Accept, F - Forward, NS - Negate Signalling IC - Internal Copy, NP - Not platform switched SP - Signal Present Interface Counts: Distributed FS Pkt Count/FS Pkt Count/PS Pkt Count (10::2,FF33::1:1) Flags: K RP Forwarding: 0/0/0/0, Other: 0/0/0 LC Forwarding: 0/0/0/0, Other: 0/0/0 HW Forwd: 0/0/0/0, Other: NA/NA/NA Slot 6: HW Forwarding: 0/0, Platform Flags: HF RPL Slot 1: HW Forwarding: 0/0, Platform Flags: HF RPL Vlan10 Flags: A Vlan30 Flags: F NS Pkts: 0/0/0 MAC: 33330001000100D0FFFE180086DDThe table below describes the fields shown in the display.
Related Commands
Command
Description
show ipv6 mfib active
Displays the rate at which active sources are sending to multicast groups.
show ipv6 mfib count
Displays summary traffic statistics from the MFIB about the group and source.
show ipv6 mfib interface
Displays information about IPv6 multicast-enabled interfaces and their forwarding status.
show ipv6 mfib status
Displays the general MFIB configuration and operational status.
show ipv6 mfib summary
Displays summary information about the number of IPv6 MFIB entries (including link-local groups) and interfaces.
show ipv6 mfib active
To display the rate at which active sources are sending to multicast groups, use the show ipv6 mfib active command in user EXEC or privileged EXEC mode.
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to both linkscope (reserved) and nonlinkscope (nonreserved) groups.
linkscope
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to linkscope (reserved) groups.
kbps
(Optional) Kilobits per second.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.0(1)M
This command was modified. The link-local keyword was changed to linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The vrf vrf-name keyword and argument were added.
Usage Guidelines
Use the show ipv6 mfib active command to display MFIB entries actively used to forward packets. In many cases, it is useful to provide the optional kbps argument to limit the set of entries displayed to the ones that are forwarding an amount of traffic larger or equal to the amount set by the kbps argument.
Examples
The following example displays statistics on the rate at which active IP multicast sources are sending information. The router is switching traffic from 2001::1:1:200 to FF05::1:
Router# show ipv6 mfib active Active IPv6 Multicast Sources - sending >= 4 kbps Group: FF05::1 Source: 2001::1:1:200 Rate: 20 pps/16 kbps(1sec), 0 kbps(last 128 sec)The table below describes the significant fields shown in the display.
show ipv6 mfib count
To display summary traffic statistics from the IPv6 Multicast Forwarding Information Base (MFIB) about multicast sources and groups, use the show ipv6 mfib count command in user EXEC or privileged EXEC mode.
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to both linkscope (reserved) and nonlinkscope (nonreserved) groups.
linkscope
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to linkscope (reserved) groups.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was integrated into Cisco IOS XE Release 2.1.
15.0(1)M
This command was modified. The link-local keyword was changed to linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The vrf vrf-name keyword and argument were added.
show ipv6 mfib global
To display information from the IPv6 Multicast Forwarding Information Base (MFIB) global table, use the show ipv6 mfib active command in user EXEC or privileged EXEC mode.
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays information in the IPv6 MFIB global table for both linkscope (reserved) and nonlinkscope (nonreserved) groups.
linkscope
(Optional) Displays information in the IPv6 MFIB global table for linkscope groups.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.0(1)M
This command was modified. The link-local keyword was changed to linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The vrf vrf-name keyword and argument were added.
show ipv6 mfib instance
To display information about an IPv6 Multicast Forwarding Information Base (MFIB) table instance, use the show ipv6 mfib instancecommand in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.0(1)M
This command was modified. The link-local keyword was changed to linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The vrf vrf-name keyword and argument were added.
show ipv6 mfib interface
To display information about IPv6 multicast-enabled interfaces and their forwarding status, use the show ipv6 mfib interface command in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
This command was integrated into Cisco IOS Release 12.0(26)S.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
Usage Guidelines
The show ipv6 mfib interface command displays the Multicast Forwarding Information Base (MFIB) interfaces and in what switching mode each MFIB has been configured.
Examples
The following example displays information about IPv6 multicast-enabled interfaces and their forwarding status. The router is configured for fast switching.
Router# show ipv6 mfib interface IPv6 Multicast Forwarding (MFIB) status: Configuration Status: enabled Operational Status: running MFIB interface status CEF-based output [configured,available] Ethernet1/1 up [yes ,yes ] Ethernet1/2 up [yes ,? ] Tunnel0 up [yes ,? ] Tunnel1 up [yes ,? ]The table below describes the significant fields shown in the display.
show ipv6 mfib route
To display the forwarding entries and interfaces in the IPv6 Multicast Forwarding Information Base (MFIB) without packet header information and forwarding counters, use the show ipv6 mfib routecommand in user EXEC or privileged EXEC mode.
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays the forwarding entries and interfaces in the IPv6 MFIB for both linkscope (reserved) and nonlinkscope (nonreserved) groups.
linkscope
(Optional) Displays the forwarding entries and interfaces in the IPv6 MFIB for linkscope (reserved) groups.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.0(1)M
This command was modified. The link-local keyword was changed to linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The vrf vrf-name keyword and argument were added.
show ipv6 mfib status
To display the general Multicast Forwarding Information Base (MFIB) configuration and operational status, use the show ipv6 mfib status command in user EXEC or privileged EXEC mode.
Usage Guidelines
Use the show ipv6 mfib status to find such information as whether or not MFIB is enabled and running.
Examples
The following example displays MFIB information:
Router# show ipv6 mfib status IPv6 Multicast Forwarding (MFIB) status: Configuration Status: enabled Operational Status: not running Notes: MFIB not running because multicast routing is disabledThe table below describes the significant fields shown in the displays.
show ipv6 mfib summary
To display summary information about the number of IPv6 Multicast Forwarding Information Base (MFIB) entries (including link-local groups) and interfaces, use the show ipv6 mfib summary command in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
This command was integrated into Cisco IOS Release 12.0(26)S.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The vrf vrf-name keyword and argument were added.
Usage Guidelines
The show ipv6 mfib summary command shows the IP multicast routing table in abbreviated form. The command displays only the number of MFIB entries, the number of (*, G) and (S, G) entries, and the number of MFIB interfaces specified.
The show ipv6 mfib summary command counts all entries, including link-local entries.
Examples
The following example displays summary information about the number of IPv6 MFIB entries and interfaces:
Router# show ipv6 mfib summary IPv6 MFIB summary: 54 total entries [1 (S,G), 7 (*,G), 46 (*,G/m)] 17 total MFIB interfacesThe table below describes the significant fields shown in the display.
show ipv6 mld groups
To display the multicast groups that are directly connected to the router and that were learned through Multicast Listener Discovery (MLD), use the show ipv6 mld groups command in user EXEC or privileged EXEC mode.
show ipv6 mld [ vrf vrf-name ] groups [link-local] [ group-name | group-address ] [ interface-type interface-number ] [ detail | explicit ]
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
link-local
(Optional) Displays the link-local groups.
group-name | group-address
(Optional) IPv6 address or name of the multicast group.
interface-type interface-number
(Optional) Interface type and number.
detail
(Optional) Displays detailed information about individual sources.
explicit
(Optional) Displays information about the hosts being explicitly tracked on each interface for each group.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
12.3(7)T
The explicit keyword was added.
12.2(25)S
The link-local and explicit keywords were added.
12.4(2)T
Information about MLD state limits was added to the command output.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The vrf vrf-name keyword and argument were added.
15.0(2)SE
This command was integrated into Cisco IOS Release 15.0(2)SE.
Usage Guidelines
If you omit all optional arguments, the show ipv6 mld groups command displays by group address and interface type and number all directly connected multicast groups, including link-local groups (where the link-local keyword is not available) used.
Examples
The following is sample output from the show ipv6 mld groups command. It shows all of the groups joined by Fast Ethernet interface 2/1, including link-local groups used by network protocols.
Router# show ipv6 mld groups FastEthernet 2/1 MLD Connected Group Membership Group Address Interface Uptime Expires FF02::2 FastEthernet2/1 3d18h never FF02::D FastEthernet2/1 3d18h never FF02::16 FastEthernet2/1 3d18h never FF02::1:FF00:1 FastEthernet2/1 3d18h 00:00:27 FF02::1:FF00:79 FastEthernet2/1 3d18h never FF02::1:FF23:83C2 FastEthernet2/1 3d18h 00:00:22 FF02::1:FFAF:2C39 FastEthernet2/1 3d18h never FF06:7777::1 FastEthernet2/1 3d18h 00:00:26The following is sample output from the show ipv6 mld groups command using the detail keyword:
Router# show ipv6 mld groups detail Interface: Ethernet2/1/1 Group: FF33::1:1:1 Uptime: 00:00:11 Router mode: INCLUDE Host mode: INCLUDE Last reporter: FE80::250:54FF:FE60:3B14 Group source list: Source Address Uptime Expires Fwd Flags 2004:4::6 00:00:11 00:04:08 Yes Remote Ac 4The following is sample output from the show ipv6 mld groupscommand using the explicit keyword:
Router# show ipv6 mld groups explicit Ethernet1/0, FF05::1 Up:00:43:11 EXCLUDE(0/1) Exp:00:03:17 Host Address Uptime Expires FE80::A8BB:CCFF:FE00:800 00:43:11 00:03:17 Mode:EXCLUDE Ethernet1/0, FF05::6 Up:00:42:22 INCLUDE(1/0) Exp:not used Host Address Uptime Expires FE80::A8BB:CCFF:FE00:800 00:42:22 00:03:17 Mode:INCLUDE 300::1 300::2 300::3 Ethernet1/0 - Interface ff05::1 - Group address Up:Uptime for the group EXCLUDE/INCLUDE - The mode the group is in on the router. (0/1) (1/0) - (Number of hosts in INCLUDE mode/Number of hosts in EXCLUDE moe) Exp:Expiry time for the group. FE80::A8BB:CCFF:FE00:800 - Host ipv6 address. 00:43:11 - Uptime for the host. 00:03:17 - Expiry time for the host Mode:INCLUDE/EXCLUDE - Mode the Host is operating in. 300::1, 300::2, 300::3 - Sources that the host has joined in the above specified mode.The table below describes the significant fields shown in the display.
Table 9 show ipv6 mld groups Field Descriptions Field
Description
Group Address
Address of the multicast group.
Interface
Interface through which the group is reachable.
Uptime
How long (in hours, minutes, and seconds) this multicast group has been known.
Expires
How long (in hours, minutes, and seconds) until the entry is removed from the MLD groups table.
The expiration timer shows "never" if the router itself has joined the group, and the expiration timer shows "not used" when the router mode of the group is INCLUDE. In this situation, the expiration timers on the source entries are used.
Last reporter:
Last host to report being a member of the multicast group.
Flags Ac 4
Flags counted toward the MLD state limits configured.
show ipv6 mld groups summary
To display the number of (*, G) and (S, G) membership reports present in the Multicast Listener Discovery (MLD) cache, use the show ipv6 mld groups summary command in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
This command was integrated into Cisco IOS Release 12.0(26)S.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.0(2)SE
This command was integrated into Cisco IOS Release 15.0(2)SE.
Usage Guidelines
The show ipv6 mld groups summary command displays the number of directly connected multicast groups (including link-local groups).
show ipv6 mld host-proxy
To display IPv6 MLD host proxy information, use the show ipv6 mld host-proxy command in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 mld host-proxy command displays MLD proxy information. When this command is used with the interface-type interface-numberarguments, interface details such as interface state, IPv6 address, MLD state, etc., are displayed. If an interface is not specified, the show ipv6 mld host-proxy command displays all active proxy interfaces on the router.
The show ipv6 mld host-proxy command when used with the interface-type interface-numberarguments and the group keyword displays information about group entries for which interface is acting as a proxy interface. If the group-address argument is specified, it display the group information for specified group.
Examples
The following example displays IPv6 MLD proxy information for the Ethernet 0/0 interface:
Router# show ipv6 mld host-proxy Ethernet0/0 Ethernet0/0 is up, line protocol is up Internet address is FE80::34/64 MLD is enabled on interface MLD querying router is FE80::12, Version: MLDv2 Current MLD host version is 2 MLD max query response time is 10 seconds Number of MLD Query sent on interface : 10 Number of MLD Query received on interface : 20 Number of MLDv1 report sent : 5 Number of MLDv2 report sent : 10 Number of MLDv1 leave sent : 0 Number of MLDv2 leave sent : 1The table below describes the significant fields shown in the display.
Table 11 show ipv6 mld host-proxy Field Descriptions Field
Description
Ethernet0/0 is up, line protocol is up
State of the specified interface.
Internet address is FE80::34/64
IPv6 address of the specified interface.
MLD is enabled on interface
State of MLD on the interface, whether enabled or disabled.
MLD querying router is FE80::12, Version: MLDv2
IPv6 address and MLD version of the querying router.
Current MLD host version is 2
Configured MLD host version.
MLD max query response time is 10 seconds
Maximum allowed response time for the query.
Number of MLD Query sent on interface: 10
Number of MLD queries sent from the interface.
Number of MLD Query received on interface: 20
Number of MLD queries received on the interface.
Number of MLDv1 report sent : 5
Number of MLDv1 membership reports sent.
Number of MLDv2 report sent : 10
Number of MLDv2 membership reports sent.
Number of MLDv1 leave sent : 0
Number of MLDv1 leave reports sent.
Number of MLDv2 leave sent : 1
Number of MLDv2 leave reports sent.
The following example provides information about a group entry for the Ethernet 0/0 proxy interface:
Router# show ipv6 mld host-proxy Ethernet0/0 group Group: FF5E::12 Uptime: 00:00:07 Group mode: INCLUDE Version MLDv2 Group source list: Source Address Uptime 5000::2 00:00:07 2000::2 00:01:15 Group: FF7E::21 Uptime: 00:02:07 Group mode: EXCLUDE Version MLDv2 Group source list: EmptyThe table below describes the significant fields shown in the display.
Table 12 show ipv6 mld host-proxy Field Descriptions Field
Description
Group: FF5E::12
The IPv6 address of the group.
Uptime: 00:00:07
The length of time the group has been active.
Group mode: INCLUDE
The group mode.
Version MLDv2
The MLD version on the proxy interface.
Group source list:
Information on the group source list.
show ipv6 mld interface
To display multicast-related information about an interface, use the show ipv6 mld interface command in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
This command was integrated into Cisco IOS Release 12.0(26)S.
12.4(2)T
Information about MLD state limits was added to the command output.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The vrf vrf-name keyword and argument were added.
15.0(2)SE
This command was integrated into Cisco IOS Release 15.0(2)SE.
Usage Guidelines
If you omit the optional type and number arguments, the show ipv6 mld interface command displays information about all interfaces.
Examples
The following is sample output from the show ipv6 mld interface command for Ethernet interface 2/1/1:
Router# show ipv6 mld interface Ethernet 2/1/1 Global State Limit : 2 active out of 2 max Loopback0 is administratively down, line protocol is down Internet address is ::/0 . . . Ethernet2/1/1 is up, line protocol is up Internet address is FE80::260:3EFF:FE86:5649/10 MLD is enabled on interface Current MLD version is 2 MLD query interval is 125 seconds MLD querier timeout is 255 seconds MLD max query response time is 10 seconds Last member query response interval is 1 seconds Interface State Limit : 2 active out of 3 max State Limit permit access list: MLD activity: 83 joins, 63 leaves MLD querying router is FE80::260:3EFF:FE86:5649 (this system)The table below describes the significant fields shown in the display.
Table 13 show ipv6 mld interface Field Descriptions Field
Description
Global State Limit: 2 active out of 2 max
Two globally configured MLD states are active.
Ethernet2/1/1 is up, line protocol is up
Interface type, number, and status.
Internet address is...
Internet address of the interface and subnet mask being applied to the interface.
MLD is enabled in interface
Indicates whether Multicast Listener Discovery (MLD) has been enabled on the interface with the ipv6 multicast-routingcommand.
Current MLD version is 2
The current MLD version.
MLD query interval is 125 seconds
Interval (in seconds) at which the Cisco IOS software sends MLD query messages, as specified with the ipv6 mld query-intervalcommand.
MLD querier timeout is 255 seconds
The length of time (in seconds) before the router takes over as the querier for the interface, as specified with the ipv6 mld query-timeoutcommand.
MLD max query response time is 10 seconds
The length of time (in seconds) that hosts have to answer an MLD Query message before the router deletes their group, as specified with the ipv6 mld query-max-response-time command.
Last member query response interval is 1 seconds
Used to calculate the maximum response code inserted in group and source-specific query. Also used to tune the "leave latency" of the link. A lower value results in reduced time to detect the last member leaving the group.
Interface State Limit : 2 active out of 3 max
Two out of three configured interface states are active.
State Limit permit access list: change
Activity for the state permit access list.
MLD activity: 83 joins, 63 leaves
Number of groups joins and leaves that have been received.
MLD querying router is FE80::260:3EFF:FE86:5649 (this system)
IPv6 address of the querying router.
show ipv6 mld snooping
To display Multicast Listener Discovery version 2 (MLDv2) snooping information, use the show ipv6 mld snooping command in privileged EXEC mode.
show ipv6 mld [ vrf vrf-name ] snooping { explicit-tracking vlan vlan | mrouter [ vlan vlan ] | report-suppression vlan vlan | statistics vlan vlan }
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
explicit-tracking vlan vlan
Displays the status of explicit host tracking.
mrouter
Displays the multicast router interfaces on an optional VLAN.
vlan vlan
(Optional) Specifies the VLAN number on the multicast router interfaces.
report-suppression vlan vlan
Displays the status of the report suppression.
statistics vlan vlan
Displays MLD snooping information on a VLAN.
Command History
Release
Modification
12.2(18)SXE
This command was introduced on the Supervisor Engine 720.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
15.1(4)M
The vrf vrf-name keyword and argument were added.
Cisco IOS XE Release 3.2SE
This command was integrated into Cisco IOS XE Release 3.2SE.
Usage Guidelines
You can enter the show ipv6 mld snooping mrouter command without arguments to display all the multicast router interfaces.
Examples
This example shows how to display explicit tracking information on VLAN 25:
Router# show ipv6 mld snooping explicit-tracking vlan 25 Source/Group Interface Reporter Filter_mode ------------------------------------------------------------------------ 10.1.1.1/226.2.2.2 Vl25:1/2 10.27.2.3 INCLUDE 10.2.2.2/226.2.2.2 Vl25:1/2 10.27.2.3 INCLUDEThis example shows how to display the multicast router interfaces in VLAN 1:
Router# show ipv6 mld snooping mrouter vlan 1 vlan ports -----+---------------------------------------- 1 Gi1/1,Gi2/1,Fa3/48,RouterThis example shows the MLD snooping statistics information for VLAN 25:
Router# show ipv6 mld snooping statistics interface vlan 25 Snooping staticstics for Vlan25 #channels:2 #hosts :1 Source/Group Interface Reporter Uptime Last-Join Last-Leave 10.1.1.1/226.2.2.2 Gi1/2:Vl25 10.27.2.3 00:01:47 00:00:50 - 10.2.2.2/226.2.2.2 Gi1/2:Vl25 10.27.2.3 00:01:47 00:00:50 -show ipv6 mld ssm-map
To display Source Specific Multicast (SSM) mapping information, use the show ipv6 mld ssm-map staticcommand in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.2(18)SXE
This command was introduced.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The vrf vrf-name keyword and argument were added.
Usage Guidelines
If the optional source-address argument is not used, all SSM mapping information is displayed.
Examples
The following example shows all SSM mappings for the router:
Router# show ipv6 mld ssm-map SSM Mapping : Enabled DNS Lookup : EnabledThe following examples show SSM mapping for the source address 2001:0DB8::1:
Router# show ipv6 mld ssm-map 2001:0DB8::1 Group address : 2001:0DB8::1 Group mode ssm : TRUE Database : STATIC Source list : 2001:0DB8::2 2001:0DB8::3 Router# show ipv6 mld ssm-map 2001:0DB8::2 Group address : 2001:0DB8::2 Group mode ssm : TRUE Database : DNS Source list : 2001:0DB8::3 2001:0DB8::1The table below describes the significant fields shown in the displays.
Table 14 show ipv6 mld ssm-map Field Descriptions Field
Description
SSM Mapping
The SSM mapping feature is enabled.
DNS Lookup
The DNS lookup feature is automatically enabled when the SSM mapping feature is enabled.
Group address
Group address identified by a specific access list.
Group mode ssm : TRUE
The identified group is functioning in SSM mode.
Database : STATIC
The router is configured to determine source addresses by checking static SSM mapping configurations.
Database : DNS
The router is configured to determine source addresses using DNS-based SSM mapping.
Source list
Source address associated with a group identified by the access list.
show ipv6 mld traffic
To display the Multicast Listener Discovery (MLD) traffic counters, use the show ipv6 mld traffic command in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.0(26)S
This command was introduced.
12.3(4)T
This command was integrated into Cisco IOS Release 12.3(4)T.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The vrf vrf-name keyword and argument were added.
Usage Guidelines
Use the show ipv6 mld trafficcommandto check if the expected number of MLD protocol messages have been received and sent.
Examples
The following example displays the MLD protocol messages received and sent.
Router# show ipv6 mld traffic MLD Traffic Counters Elapsed time since counters cleared:00:00:21 Received Sent Valid MLD Packets 3 1 Queries 1 0 Reports 2 1 Leaves 0 0 Mtrace packets 0 0 Errors: Malformed Packets 0 Bad Checksums 0 Martian source 0 Packets Received on MLD-disabled Interface 0The table below describes the significant fields shown in the display.
Table 15 show ipv6 mld traffic Field Descriptions Field
Description
Elapsed time since counters cleared
Indicates the amount of time (in hours, minutes, and seconds) since the counters cleared.
Valid MLD packets
Number of valid MLD packets received and sent.
Queries
Number of valid queries received and sent.
Reports
Number of valid reports received and sent.
Leaves
Number of valid leaves received and sent.
Mtrace packets
Number of multicast trace packets received and sent.
Errors
Types of errors and the number of errors that have occurred.
show ipv6 mobile binding
To display information about the binding cache, use the show ipv6 mobile binding command in user EXEC or privileged EXEC mode.
show ipv6 mobile binding [ care-of-address address | home-address address | interface-type interface-number ]
Syntax Description
care-of-address
(Optional) Provides information about the mobile node’s current location.
address
(Optional) Current address of the mobile node.
home-address
(Optional) IPv6 address is assigned to the mobile node within its home subnet prefix on its home link.
interface-type interface-number
(Optional) Interface type and number.
Usage Guidelines
The show ipv6 mobile binding command displays details of all bindings that match all search criteria. If no optional keywords or arguments are specified, all bindings are displayed.
Examples
The following example displays information about the binding cache:
Router# show ipv6 mobile binding Mobile IPv6 Binding Cache Entries: 2001:1::8 via care-of address 2001:2::1 home-agent 2001:1::2 state ACTIVE, sequence 1, flags AHrlK lifetime:remaining 1023 (secs), granted 1024 (secs), requested 1024 (secs) interface Ethernet1/3 0 tunneled, 0 reversed tunneled Selection matched 1 bindingsThe following example displays information about the tunnel interface and the tunnel end point details:
Router# show ipv6 mobile bindings Tunnel Interface: tunnel0 Tunnel Source 2001:0DB1:1:1 Tunnel Destination: 2001:0DB1:2:1 Input: 20 packets, 1200 bytes, 0 drops Output: 20 packets, 1200 bytes, 0 dropsThe table below describes the significant fields shown in the displays.
Table 16 show ipv6 mobile binding Field Descriptions Field
Description
2001:1::8
Home IPv6 address of the mobile node.
via care-of address 2001:2::1
Care-of address of the mobile node.
home-agent 2001:1::2
Home-agent address
state ACTIVE, sequence 1, flags AHrlK
lifetime:remaining 1023 (secs), granted 1024 (secs), requested 1024 (secs)
- Remaining: The time remaining until the registration is expired. It has the same initial value as lifetime granted, and is counted down by the home agent.
- Granted: The lifetime granted to the mobile node for this registration. Number of seconds in parentheses.
- Requested: The lifetime requested by the mobile node for this registration. Number of seconds in parentheses.
interface Ethernet1/3
The interface being used.
0 tunneled, 0 reversed tunneled
Number of bindings tunneled and reverse tunneled.
Selection matched 1 bindings
Total number of mobility bindings that were matched.
Tunnel Interface
The tunnel interface being used.
Tunnel Source
Tunnel source IPv6 address.
Tunnel Destionation
Tunnel destination IPv6 address.
Input
Number of packets in.
Output
Number of packets out.
show ipv6 mobile globals
To display global Mobile IPv6 parameters, use the show ipv6 mobile globalscommand in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 mobile globals command displays the values of all global configuration parameters associated with Mobile IPv6 and lists the interfaces on which home agent functionality is operating.
Examples
In the following example, the show ipv6 mobile globals command displays the binding parameters:
Router# show ipv6 mobile globals Mobile IPv6 Global Settings: 1 Home Agent service on following interfaces: Ethernet1/2 Bindings: Maximum number is unlimited. 1 bindings are in use 1 bindings peak Binding lifetime permitted is 262140 seconds Recommended refresh time is 300 secondsIn the following example, the show ipv6 mobile globals command displays the Mobile IPv6 tunnel information parameters on the home agent:
Router# show ipv6 mobile globals Tunnel Encapsulation Mode: IPv6/IPv6 ICMP Unreachable for tunnel interfaces <enabled/disabled> Tunnel Path MTU Discovery: <enabled/disabled>The table below describes the significant fields shown in the displays.
Table 17 show ipv6 mobile globals Field Descriptions Field
Description
1 Home Agent service on following interfaces: Ethernet1/2
Interface on which the home agent service is enabled.
Bindings:
Information on bindings.
Maximum number is unlimited.
The amount of bindings allowed on the home agent.
1 bindings are in use.
How many bindings are being used.
1 bindings peak
The maximum number of bindings that have been used in this session.
Binding lifetime permitted is 262140 seconds
The configured binding lifetime.
Recommended refresh time is 300 seconds
The configured refresh time.
Tunnel Encapsulation Mode:
Tunnel encapsulation type.
ICMP Unreachable for tunnel interfaces
Enabled or disabled.
Tunnel Path MTU Discovery:
Enabled or disabled.
Related Commands
Command
Description
address (IPv6 mobile router)
Specifies the home address of the IPv6 mobile node.
binding
Configures binding options for the Mobile IPv6 home agent feature in home agent configuration mode.
ipv6 mobile home-agent (global configuration)
Enters home agent configuration mode.
host group
Creates a host configuration in Mobile IPv6.
show ipv6 mobile home-agents
To display local and discovered neighboring home agents, use the show ipv6 mobile home-agentscommand in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 mobile home-agentscommand displays information about local and discovered neighboring home agents. You can choose to display information on a specified interface using the optional interface-type and interface-number arguments, and you can further choose to display only those addresses that match the optional prefix argument.
If no argument or keyword is entered, the home agent list for each interface on which the router is acting as a home agent is displayed. Each list is displayed in decreasing order of preference.
Examples
In the following example, the fact that no neighboring mobile home agents were found is displayed:
Router# show ipv6 mobile home-agents Home Agent information for Ethernet1/3 Configured: FE80::20B:BFFF:FE33:501F preference 0 lifetime 1800 global address 2001:0DB8:1::2/64 Discovered Home Agents: FE80::4, last update 0 min preference 0 lifetime 1800 global address 2001:0DB8:1::4/64The table below describes the significant fields shown in the display.
Table 18 show ipv6 mobile home-agents Field Descriptions Field
Description
Home Agent information for Ethernet1/3
The interface on which the home agent is configured.
Configured: FE80::20B:BFFF:FE33:501F
The IPv6 address on which the home agent is configured.
preference 0 lifetime 1800
The configured home agent preference and lifetime.
global address 2001:0DB8:1::2/64
The configured global address.
Discovered Home Agents:
FE80::4, last update 0 min
preference 0 lifetime 1800
global address 2001:0DB8:1::4/64
The address and configuration information about discovered home agents.
show ipv6 mobile host groups
To display information about IPv6 mobile host groups, use the show ipv6 mobile host groupscommand in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 mobile host groupscommand lists the configuration of all configured host groups. To display information about a specific host group, use the optional profile-name keyword.
Examples
In the following example, information about a host group named localhost is displayed:
Router# show ipv6 mobile host groups Mobile IPv6 Host Configuration Mobile Host List: Host Group Name: localhost NAI: sai@cisco.com Address: CAB:C0:CA5A:CA5A::CA5A Security Association Entry: SPI: (Hex: 501) (Decimal Int: 1281) Key Format: Hex Key: baba Algorithm: HMAC_SHA1 Replay Protection: On Replay Window: 6 secsThe table below describes the significant fields shown in the display.
Table 19 show ipv6 mobile host groups Field Descriptions Field
Description
Host Group Name: localhost
Configuration information about the host group named localhost to follow.
NAI: sai@cisco.com
Network access identifier (NAI) for localhost host group.
Address: 2001:0DB8:CA5A:CA5A::CA5A
IPv6 address for localhost host group.
Security Association Entry:
Security association for the host group named localhost to follow.
SPI: (Hex: 501) (Decimal Int: 1281)
SPI for localhost.
Key Format: Hex Key: baba
Key format and name for localhost.
Algorithm: HMAC_SHA1
Authentication algorithm.
Replay Protection: On Replay Window: 6 secs
Replay protection is activated, and the number of seconds that the router uses for replay protection is 6.
Related Commands
Command
Description
address (Mobile IPv6)
Specifies the home address of the IPv6 mobile node.
authentication (Mobile IPv6)
Specifies the authentication properties for the IPv6 mobile node by creating either a unidirectional or bidirectional SPI.
host group
Creates a host group configuration in IPv6 Mobile.
nai
Specifies the NAI for the IPv6 mobile node.
show ipv6 mobile globals
Displays global Mobile IPv6 parameters.
show ipv6 mobile router
To display configuration information and monitoring statistics about the IPv6 mobile router, use the show ipv6 mobile routercommand in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 mobile routerdisplay includes the mobile router configuration information such as the home address and network mask, home agent, and registration settings, and operational information such as status, tunnel interface, active foreign agent, and care-of address.
Examples
The following is sample output from the show ipv6 mobile router command:
Router# show ipv6 mobile router Mobile Reverse Tunnel established --------------------------------- using Nemo Basic mode Home Agent: 2001:DB8:2000::2001 CareOf Address: 2001:DB8::A8BB:CCFF:FE01:F611 Attachment Router: FE80::A8BB:CCFF:FE01:F511 Attachment Interface: Ethernet1/1 Home Network: 2001:DB8:2000:0:FDFF:FFFF:FFFF:FFFE/64 Home Address: 2001:DB8:2000::1111The table below describes the significant fields shown in the display.
Table 20 show ipv6 mobile router Field Descriptions Field
Description
Mobile Reverse Tunnel established
If reverse tunnel is enabled or disabled, this information is displayed or absent, respectively.
using Nemo Basic mode
Type of mode being used by the mobile router.
Home Agent:
Home agent with which the mobile router registers. The mobile router registers only to the home agent with the highest priority when multiple addresses are configured.
CareOf Address:
Care-of address used by the registered mobile router.
Attachment Router:
Attachment point in the foreign network.
Attachment Interface:
Attachment interface used in the foreign network.
Home Network:
IPv6 address of the mobile router home network.
Home Address:
IPv6 address of the mobile router.
show ipv6 mobile traffic
To display information about binding updates received and binding acknowledgments sent, use the show ipv6 mobile trafficcommand in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 mobile traffic command displays counters and other information associated with Mobile IPv6. The following counters are maintained globally across all interfaces:
- Dynamic home agent discovery requests received
- Binding updates received
- Home agent registrations received
- Successful home agent registrations
- Home agent deregistrations (lifetime of zero or care-of address equals home address)
- Home agent registrations rejected, defined in the status as sent in the binding acknowledgment with a separate counter for every reason code defined in the table below, and generated by the implementation
- Time of last registration acceptance
- Time of last registration denial
- Status code for last registration denial
- Binding updates discarded through rate limiting
- Binding acknowledgments discarded through rate limiting
- Binding cache high-water mark, maintained and displayed for registrations
The table below shows possible binding status values and reasons for use of these values.
Table 21 show ipv6 mobile traffic Field Descriptions Reason Code
Binding Status Value
0
Binding update accepted
128
Reason unspecified
129
Administratively prohibited
130
Insufficient resources
131
Home registration not supported
132
Not home subnet
133
Not home agent for this mobile node
134
Duplicate address detection (DAD) failed
135
Sequence number out of window
Examples
In the following example, information about IPv6 Mobile traffic is displayed:
Router# show ipv6 mobile traffic MIPv6 statistics: Rcvd: 6477 total 0 truncated, 0 format errors 0 checksum errors Binding Updates received:6477 0 no HA option, 0 BU's length 0 options' length, 0 invalid CoA Sent: 6477 generated Binding Acknowledgements sent:6477 6477 accepted (0 prefix discovery required) 0 reason unspecified, 0 admin prohibited 0 insufficient resources, 0 home reg not supported 0 not home subnet, 0 not home agent for node 0 DAD failed, 0 sequence number Binding Errors sent:0 0 no binding, 0 unknown MH Home Agent Traffic: 6477 registrations, 0 deregistrations 00:00:23 since last accepted HA registration unknown time since last failed HA registration unknown last failed registration code Traffic forwarded: 0 tunneled, 0 reversed tunneled Dynamic Home Agent Address Discovery: 1 requests received, 1 replies sent Mobile Prefix Discovery: 0 solicitations received, 0 advertisements sentThe table below describes the significant fields shown in the display.
Table 22 show ipv6 mobile traffic Field Descriptions Field
Description
MIPv6 statistics:
Information about binding updates received by the mobility agent.
Sent:
Information about binding acknowledgments sent by the mobility agent.
Binding Errors sent:
Information about binding errors sent by the mobility agent.
Home Agent Traffic: 6477 registrations, 0 deregistrations
Number of registrations and deregistrations accepted by the home agent.
00:00:23 since last accepted HA registration
Length of time since the last registration was accepted by the home agent.
unknown time since last failed HA registration
Length of time since the last failed registration by the home agent.
unknown last failed registration code
Reason why the registration failed, if it did fail.
Dynamic Home Agent Address Discovery:
Number of dynamic home agent discovery requests received and replies sent.
Mobile Prefix Discovery:
Number of mobile prefix discovery solicitations received and advertisements sent by the home agent.
show ipv6 mobile tunnels
To list the Mobile IPv6 tunnels on the home agent, use the show ipv6 mobile tunnelscommand in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 mobile tunnels command displays active tunnels on the Mobile IPv6 home agent. Use the summary keyword to view a summary of all tunnels on the home agent, or the tunnelif-number keyword and argument to view information on a specific tunnel.
Examples
The following example displays information about the Mobile IPv6 tunnels on the home agent:
Router# show ipv6 mobile tunnels Tunnel1: Source: 2001:0DB1:1:1 Destination: 2001:0DB1:2:1 Encapsulation Mode: IPv6/IPv6 Egress Interface: Ethernet 1/0 Switching Mode: Process Keep-Alive: Not Supported Path MTU Discovery: Enabled Input: 20 packets, 1200 bytes, 0 drops Output: 20 packets, 1200 bytes, 0 drops NEMO Options: Not SupportedThe table below describes the significant fields shown in the display.
Table 23 show ipv6 mobile tunnels Field Descriptions Field
Description
Source:
Source IPv6 tunnel address.
Destination:
Destination IPv6 tunnel address.
Encapsulation Mode:
Tunnel encapsulation type.
Egress interface:
Interface used for egress (outgoing packets).
Switching mode:
Type of switching mode used.
Keep-alive:
Supported or not supported.
Path MTU Discovery:
Enabled or disabled.
Input:
Number of packets in.
Output:
Number of packets out.
NEMO Options:
Supported or not supported.
show ipv6 mrib client
To display information about the clients of the Multicast Routing Information Base (MRIB), use the show ipv6 mrib client command in user EXEC or privileged EXEC mode.
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
filter
(Optional) Displays information about MRIB flags that each client owns and that each client is interested in.
name
(Optional) The name of a multicast routing protocol that acts as a client of MRIB, such as Multicast Listener Discovery (MLD) and Protocol Independent Multicast (PIM).
client-name : client-id
The name and ID of a multicast routing protocol that acts as a client of MRIB, such as MLD and PIM. The colon is required.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
This command was integrated into Cisco IOS Release 12.0(26)S.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The vrf vrf-name keyword and argument were added.
15.0(2)SE
This command was integrated into Cisco IOS Release 15.0(2)SE.
Usage Guidelines
Use the filter keyword to display information about the MRIB flags each client owns and the flags in which each client is interested.
Examples
The following is sample output from the show ipv6 mrib clientcommand:
Router# show ipv6 mrib client IP MRIB client-connections igmp:145 (connection id 0) pim:146 (connection id 1) mfib ipv6:3 (connection id 2) slot 3 mfib ipv6 rp agent:16 (connection id 3) slot 1 mfib ipv6 rp agent:16 (connection id 4) slot 0 mfib ipv6 rp agent:16 (connection id 5) slot 4 mfib ipv6 rp agent:16 (connection id 6) slot 2 mfib ipv6 rp agent:16 (connection id 7)The table below describes the significant fields shown in the display.
show ipv6 mrib route
To display Multicast Routing Information Base (MRIB) route information, use the show ipv6 mrib route command in user EXEC or privileged EXEC mode.
show ipv6 mrib [ vrf vrf-name ] route [ link-local | summary | [ sourceaddress-or-name | * ] [ groupname-or-address [prefix-length] ] ]
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
link-local
(Optional) Displays the link-local groups.
summary
(Optional) Displays the number of MRIB entries (including link-local groups) and interfaces present in the MRIB table.
sourceaddress-or-name
(Optional) IPv6 address or name of the source.
*
(Optional) Displays all MRIB route information.
groupname or-address
(Optional) IPv6 address or name of the multicast group.
prefix-length
(Optional) IPv6 prefix length.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The vrf vrf-name keyword and argument were added.
15.0(2)SE
This command was integrated into Cisco IOS Release 15.0(2)SE.
Usage Guidelines
All entries are created by various clients of the MRIB, such as Multicast Listener Discovery (MLD), Protocol Independent Multicast (PIM), and Multicast Forwarding Information Base (MFIB). The flags on each entry or interface serve as a communication mechanism between various clients of the MRIB. The entries reveal how PIM sends register messages for new sources and the action taken.
The summary keyword shows the count of all entries, including link-local entries.
The interface flags are described in the table below.
Table 25 Description of Interface Flags Flag
Description
F
Forward--Data is forwarded out of this interface
A
Accept--Data received on this interface is accepted for forwarding
IC
Internal copy
NS
Negate signal
DP
Do not preserve
SP
Signal present
II
Internal interest
ID
Internal uninterest
LI
Local interest
LD
Local uninterest
C
Perform directly connected check
Special entries in the MRIB indicate exceptions from the normal behavior. For example, no signaling or notification is necessary for arriving data packets that match any of the special group ranges. The special group ranges are as follows:
- Undefined scope (FFX0::/16)
- Node local groups (FFX1::/16)
- Link-local groups (FFX2::/16)
- Source Specific Multicast (SSM) groups (FF3X::/32).
For all the remaining (usually sparse-mode) IPv6 multicast groups, a directly connected check is performed and the PIM notified if a directly connected source arrives. This procedure is how PIM sends register messages for new sources.
Examples
The following is sample output from the show ipv6 mrib routecommand using the summary keyword:
Router# show ipv6 mrib route summary MRIB Route-DB Summary No. of (*,G) routes = 52 No. of (S,G) routes = 0 No. of Route x Interfaces (RxI) = 10The table below describes the significant fields shown in the display.
show ipv6 mroute
To display the information in the PIM topology table in a format similar to the show ip mroute command, use the show ipv6 mroute command in user EXEC or privileged EXEC mode.
show ipv6 mroute [ vrf vrf-name ] [ link-local | [ group-name | group-address [ source-address | source-name ] ] ] [summary] [count]
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
link-local
(Optional) Displays the link-local groups.
group-name | group-address
(Optional) IPv6 address or name of the multicast group.
source-address | source-name
(Optional) IPv6 address or name of the source.
summary
(Optional) Displays a one-line, abbreviated summary of each entry in the IPv6 multicast routing table.
count
(Optional) Displays statistics from the Multicast Forwarding Information Base (MFIB) about the group and source, including number of packets, packets per second, average packet size, and bytes per second.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
12.2(25)S
The link-local keyword was added.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The vrf vrf-name keyword and argument were added.
15.0(2)SE
This command was integrated into Cisco IOS Release 15.0(2)SE.
Usage Guidelines
The IPv6 multicast implementation does not have a separate mroute table. For this reason, the show ipv6 mroute command enables you to display the information in the PIM topology table in a format similar to the show ip mroute command.
If you omit all optional arguments and keywords, the show ipv6 mroute command displays all the entries in the PIM topology table (except link-local groups where the link-local keyword is available).
The Cisco IOS software populates the PIM topology table by creating (S,G) and (*,G) entries based on PIM protocol messages, MLD reports, and traffic. The asterisk (*) refers to all source addresses, the "S" refers to a single source address, and the "G" is the destination multicast group address. In creating (S, G) entries, the software uses the best path to that destination group found in the unicast routing table (that is, through Reverse Path Forwarding [RPF]).
Use the show ipv6 mroutecommand to display the forwarding status of each IPv6 multicast route.
Examples
The following is sample output from the show ipv6 mroutecommand:
Router# show ipv6 mroute ff07::1 Multicast Routing Table Flags:D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected, L - Local, I - Received Source Specific Host Report, P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT Timers:Uptime/Expires Interface state:Interface, State (*, FF07::1), 00:04:45/00:02:47, RP 2001:0DB8:6::6, flags:S Incoming interface:Tunnel5 RPF nbr:6:6:6::6 Outgoing interface list: POS4/0, Forward, 00:04:45/00:02:47 (2001:0DB8:999::99, FF07::1), 00:02:06/00:01:23, flags:SFT Incoming interface:POS1/0 RPF nbr:2001:0DB8:999::99 Outgoing interface list: POS4/0, Forward, 00:02:06/00:03:27The following is sample output from the show ipv6 mroutecommand with the summarykeyword:
Router# show ipv6 mroute ff07::1 summary Multicast Routing Table Flags:D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected, L - Local, I - Received Source Specific Host Report, P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT Timers:Uptime/Expires Interface state:Interface, State (*, FF07::1), 00:04:55/00:02:36, RP 2001:0DB8:6::6, OIF count:1, flags:S (2001:0DB8:999::99, FF07::1), 00:02:17/00:01:12, OIF count:1, flags:SFTThe following is sample output from the show ipv6 mroutecommand with the countkeyword:
Router# show ipv6 mroute ff07::1 count IP Multicast Statistics 71 routes, 24 groups, 0.04 average sources per group Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second Other counts:Total/RPF failed/Other drops(OIF-null, rate-limit etc) Group:FF07::1 RP-tree: RP Forwarding:0/0/0/0, Other:0/0/0 LC Forwarding:0/0/0/0, Other:0/0/0 Source:2001:0DB8:999::99, RP Forwarding:0/0/0/0, Other:0/0/0 LC Forwarding:0/0/0/0, Other:0/0/0 HW Forwd: 20000/0/92/0, Other:0/0/0 Tot. shown:Source count:1, pkt count:20000The table below describes the significant fields shown in the display.
Table 27 show ipv6 mroute Field Descriptions Field
Description
Flags:
Provides information about the entry.
- S--sparse. Entry is operating in sparse mode.
- s--SSM group. Indicates that a multicast group is within the SSM range of IP addresses. This flag is reset if the SSM range changes.
- C--connected. A member of the multicast group is present on the directly connected interface.
- L--local. The router itself is a member of the multicast group.
- I--received source specific host report. Indicates that an (S, G) entry was created by an (S, G) report. This flag is set only on the designated router (DR).
- P--pruned. Route has been pruned. The Cisco IOS software keeps this information so that a downstream member can join the source.
- R--RP-bit set. Indicates that the (S, G) entry is pointing toward the RP. This is typically prune state along the shared tree for a particular source.
- F--register flag. Indicates that the software is registering for a multicast source.
- T--SPT-bit set. Indicates that packets have been received on the shortest path source tree.
The default SPT-Threshold value of 0 kbps is used for the group, and the J - Join SPT flag is always set on (*, G) entries and is never cleared. The router immediately switches to the shortest path source tree when traffic from a new source is received.
- J--join SPT. For (*, G) entries, indicates that the rate of traffic flowing down the shared tree is exceeding the SPT-Threshold value set for the group. (The default SPT-Threshold setting is 0 kbps.) When the J - Join shortest path tree (SPT) flag is set, the next (S, G) packet received down the shared tree triggers an (S, G) join in the direction of the source, thereby causing the router to join the source tree.
Timers: Uptime/Expires
"Uptime" indicates per interface how long (in hours, minutes, and seconds) the entry has been in the IPv6 multicast routing table. "Expires" indicates per interface how long (in hours, minutes, and seconds) until the entry will be removed from the IPv6 multicast routing table.
Interface state:
Indicates the state of the incoming or outgoing interface.
- Interface. Indicates the type and number of the interface listed in the incoming or outgoing interface list.
- Next-Hop. "Next-Hop" specifies the IP address of the downstream neighbor.
- State/Mode. "State" indicates that packets will either be forwarded, pruned, or null on the interface depending on whether there are restrictions due to access lists. "Mode" indicates that the interface is operating in sparse mode.
(*, FF07::1) and (2001:0DB8:999::99)
Entry in the IPv6 multicast routing table. The entry consists of the IPv6 address of the source router followed by the IPv6 address of the multicast group. An asterisk (*) in place of the source router indicates all sources.
Entries in the first format are referred to as (*, G) or "star comma G" entries. Entries in the second format are referred to as (S, G) or "S comma G" entries; (*, G) entries are used to build (S, G) entries.
RP
Address of the RP router.
flags:
Information set by the MRIB clients on this MRIB entry.
Incoming interface:
Expected interface for a multicast packet from the source. If the packet is not received on this interface, it is discarded.
RPF nbr
IP address of the upstream router to the RP or source.
Outgoing interface list:
Interfaces through which packets will be forwarded. For (S,G) entries, this list will not include the interfaces inherited from the (*,G) entry.
show ipv6 mroute active
To display the active multicast streams on the router, use the show ipv6 mroute activecommand in user EXEC or privileged EXEC mode.
Syntax Description
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
link-local
(Optional) Displays the link-local groups.
group-name | group-address
(Optional) IPv6 address or name of the multicast group.
kbps
(Optional) Displays the rate that active sources are sending to multicast groups. Active sources are those sending at the kbps value or higher. The kbps argument defaults to 4 kbps.
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
12.2(25)S
The link-local keyword was added.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The vrf vrf-name keyword and argument were added.
Usage Guidelines
The show ipv6 mroute activecommand displays active multicast streams with data rates that are greater than or equal to the kilobits per second set by the user. The command default is 4 kbps.
Examples
The following is sample output from the show ipv6 mroute activecommand:
Router# show ipv6 mroute active Active IPv6 Multicast Sources - sending >= 4 kbps Group:FF05::1 Source:2001::1:1:1 Rate:11 pps/8 kbps(1sec), 8 kbps(last 8 sec)The table below describes the significant fields shown in the display.
Table 28 show ipv6 mroute active Field Descriptions Field
Description
Group:
Summary information about counters for (*, G) and the range of (S, G) states for one particular group G. The following RP-tree: and Source: output fields contain information about the individual states belonging to this group.
Note For Source Specific Multicast (PIM-SSM) range groups, the Group: displays are statistical. All SSM range (S, G) states are individual, unrelated SSM channels.
Rate...kbps
Bytes per second divided by packets per second divided by 1000. On an IP multicast fast-switching platform, the number of packets per second is the number of packets during the last second. Other platforms may use a different approach to calculate this number. Please refer to the platform documentation for more information.
show ipv6 mtu
To display maximum transmission unit (MTU) cache information for IPv6 interfaces, use the show ipv6 mtucommand in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.2(2)T
This command was introduced.
12.0(21)ST
This command was integrated into Cisco IOS Release 12.0(21)ST.
12.0(22)S
This command was integrated into Cisco IOS Release 12.0(22)S.
12.2(14)S
This command was integrated into Cisco IOS Release 12.2(14)S.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SB
The vrf keyword and vrfname argument were added.
Usage Guidelines
The vrf keyword and vrfname argument allow you to view MTUs related to a specific VRF.
Examples
The following is sample output from the show ipv6 mtucommand:
Router# show ipv6 mtu MTU Since Destination Address 1400 00:04:21 5000:1::3 1280 00:04:50 FE80::203:A0FF:FED6:141DThe following is sample output from the show ipv6 mtu command using the vrf keyword and vrfname argument. This example provides information about the VRF named vrfname1:
Router# show ipv6 mtu vrf vrfname1 MTU Since Source Address Destination Address 1300 00:00:04 2001:0DB8:2 2001:0DB8:7The table below describes the significant fields shown in the display.
Table 29 show ipv6 mtu Field Descriptions Field
Description
MTU
MTU, which was contained in the Internet Control Message Protocol (ICMP) packet-too-big message, used for the path to the destination address.
Since
Age of the entry since the ICMP packet-too-big message was received.
Destination Address
Address contained in the received ICMP packet-too-big message. Packets originating from this router to this address should be no bigger than the given MTU.