Use the
show commands
listed below to verify the IPv6 Multicast configuration.
To display the group
membership information on various interfaces on a router, use the
show command
described in the following example.
Router# show ipv6 mld groups
MLD Connected Group Membership
Group Address Interface Uptime Expires
FF04::10 Vlan104 00:18:41 never
FF04::12 Vlan104 00:19:10 never
FF34::4 Vlan104 00:35:00 not used
FF45::5 Vlan104 00:35:04 00:01:44
To display the MLD
interface specific parameters, use the
show command
described in the following example.
Router# show ipv6 mld interface vlan 104
Vlan104 is up, line protocol is up
Internet address is FE80::4255:39FF:FE89:6283/10
MLD is enabled on interface
Current MLD version is 2
MLD query interval is 60 seconds
MLD querier timeout is 130 seconds
MLD max query response time is 20 seconds
Last member query response interval is 1 seconds
MLD activity: 18 joins, 7 leaves
MLD querying router is FE80::4255:39FF:FE89:6283 (this system)
To display the MLD
traffic counters, use the
show command
described in the following example.
Router# show ipv6 mld traffic
MLD Traffic Counters
Elapsed time since counters cleared: 02:29:12
Received Sent
Valid MLD Packets 784 385
Queries 4 167
Reports 776 218
Leaves 4 0
Mtrace packets 0 0
Errors:
Malformed Packets 0
Martian source 10
Non link-local source 0
Hop limit is not equal to 1 0
To display interface
specific information for PIM, use the
show command
described in the following example.
Router# show ipv6 pim interface
Interface PIM Nbr Hello DR
Count Intvl Prior
Vlan102 on 1 30 1
Address: FE80::4255:39FF:FE89:5283
DR : FE80::4255:39FF:FE89:5284
Null0 off 0 30 1
Address: FE80::1
DR : not elected
FastEthernet0/0 off 0 30 1
Address: ::
DR : not elected
GigabitEthernet0/8 off 0 30 1
Address: ::
DR : not elected
GigabitEthernet0/9 off 0 30 1
Address: ::
DR : not elected
Gi0/10 off 0 30 1
Address: ::
DR : not elected
Gi0/11 off 0 30 1
Address: ::
DR : not elected
GigabitEthernet0/0 off 0 30 1
Address: ::
DR : not elected
GigabitEthernet0/1 off 0 30 1
Address: ::
DR : not elected
GigabitEthernet0/2 off 0 30 1
Address: ::
DR : not elected
GigabitEthernet0/3 off 0 30 1
Address: ::
DR : not elected
GigabitEthernet0/4 off 0 30 1
Address: ::
DR : not elected
GigabitEthernet0/5 off 0 30 1
Address: ::
DR : not elected
GigabitEthernet0/6 off 0 30 1
Address: ::
DR : not elected
GigabitEthernet0/7 off 0 30 1
Address: ::
DR : not elected
Vlan1 off 0 30 1
Address: ::
DR : not elected
Port-channel1 off 0 30 1
Address: ::
DR : not elected
Tunnel0 off 0 30 1
Address: FE80::7EAD:74FF:FE9D:94C8
DR : not elected
Loopback1 off 0 30 1
Address: ::
DR : not elected
Vlan104 on 1 45 1
Address: FE80::4255:39FF:FE89:6283
DR : FE80::4255:39FF:FE89:6284
Tunnel1 off 0 30 1
Address: FE80::7EAD:74FF:FE9D:94C8
DR : not elected
To display the number
of (*, G) and (S, G) membership reports present in the MLD cache, use the
show command
described in the following example.
Router# show ipv6 mld groups summary
MLD Route Summary
No. of (*,G) routes = 9
No. of (S,G) routes = 3
To display the number
of PIM neighbors on each interface, as well as, the total number of PIM
neighbors, use the
show command
described in the following example.
Router# show ipv6 pim neighbor count
Interface Nbr count
Vlan104 1
Vlan102 1
Total Nbrs 2
To display the number
of PIM neighbors discovered, use the
show command
described in the following example.
Router# show ipv6 pim neighbor
PIM Neighbor Table
Mode: B - Bidir Capable, G - GenID Capable
Neighbor Address Interface Uptime Expires Mode DR pri
FE80::4255:39FF:FE89:5284 Vlan102 02:30:51 00:01:38 B G DR 1
FE80::4255:39FF:FE89:6284 Vlan104 00:09:49 00:01:16 B G DR 1
To display the
information in the PIM topology table in a format similar to the
show
ip
mroute
command, use the show command described in the following example.
Router# show ipv6 mroute
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, Y - Joined MDT-data group,
y - Sending to MDT-data group
g - BGP signal originated, G - BGP Signal received,
N - BGP Shared-Tree Prune received, n - BGP C-Mroute suppressed,
q - BGP Src-Active originated, Q - BGP Src-Active received
E - Extranet
Timers: Uptime/Expires
Interface state: Interface, State
(2006::1, FF34::4), 00:38:41/never, flags: sPTI
Incoming interface: Vlan102
RPF nbr: FE80::4255:39FF:FE89:5284
Immediate Outgoing interface list:
Vlan104, Null, 00:38:41/never
(100::1, FF04::10), 00:22:21/never, flags: SPI
Incoming interface: Null
RPF nbr: ::
Immediate Outgoing interface list:
Vlan104, Null, 00:22:21/never
(*, FF04::12), 00:22:50/never, RP 2021::2021, flags: SPCL
Incoming interface: Vlan104
RPF nbr: FE80::4255:39FF:FE89:6284
Outgoing interface list: Null
(2001:DB8::10:11, FF04::12), 00:22:50/never, RP 2021::2021, flags: SPLRI
Incoming interface: Vlan104
RPF nbr: FE80::4255:39FF:FE89:6284
Outgoing interface list: Null
(*, FF45::5), 00:38:44/never, RP 2021::2021, flags: SPC
Incoming interface: Vlan104
RPF nbr: FE80::4255:39FF:FE89:6284
Outgoing interface list: Null
To display PIM
topology table for given group or all groups, use the
show command
described in the following example.
Router# show ipv6 pim topology
IP PIM Multicast Topology Table
Entry state: (*/S,G)[RPT/SPT] Protocol Uptime Info Upstream Mode
Entry flags: KAT - Keep Alive Timer, AA - Assume Alive, PA - Probe Alive,
RA - Really Alive, LH - Last Hop, DSS - Don't Signal Sources,
RR - Register Received, SR - Sending Registers, E - MSDP External,
DCC - Don't Check Connected, Y - Joined MDT-data group,
y - Sending to MDT-data group
BGS - BGP Signal Sent, !BGS - BGP signal suppressed
SAS - BGP Src-Act Sent, SAR - BGP Src-Act Received
Interface state: Name, Uptime, Fwd, Info
Interface flags: LI - Local Interest, LD - Local Disinterest,
II - Internal Interest, ID - Internal Disinterest,
LH - Last Hop, AS - Assert, AB - Admin Boundary, BS - BGP Signal,
BP - BGP Shared-Tree Prune, BPT - BGP Prune Time
(2006::1,FF34::4)
SSM SPT UP: 00:39:23 JP: Null(never) Flags:
RPF: Vlan102,FE80::4255:39FF:FE89:5284
Vlan104 00:39:23 off LI
(100::1,FF04::10)
SM UP: 00:23:04 JP: Null(never) Flags:
RPF: ,::
Vlan104 00:23:04 off LI
(*,FF04::12)
SM UP: 00:23:33 JP: Null(never) Flags:
RP: 2021::2021
RPF: Vlan104,FE80::4255:39FF:FE89:6284
Vlan104 00:23:33 off LI II
(2001:DB8::10:11,FF04::12)
SM RPT UP: 00:23:33 JP: Null(never) Flags:
RP: 2021::2021
RPF: Vlan104,FE80::4255:39FF:FE89:6284
Vlan104 00:23:33 off LD ID
(*,FF45::5)
SM UP: 00:39:27 JP: Null(never) Flags:
RP: 2021::2021
RPF: Vlan104,FE80::4255:39FF:FE89:6284
Vlan104 00:39:27 off LI IP PIM Multicast Topology Table
Entry state: (*/S,G)[RPT/SPT] Protocol Uptime Info
Entry flags: KAT - Keep Alive Timer, AA - Assume Alive, PA - Probe Alive,
RA - Really Alive, LH - Last Hop, DSS - Don't Signal Sources,
RR - Register Received, SR - Sending Registers,
E - MSDP External, DCC - Don't Check Connected
Interface state: Name, Uptime, Fwd, Info
Interface flags: LI - Local Interest, LD - Local Dissinterest,
II - Internal Interest, ID - Internal Dissinterest,
LH - Last Hop, AS - Assert, AB - Admin Boundary
(*,FF0E::E0:1:1:1)
SM UP: 04:27:50 JP: Join(never) Flags: LH
RP: 51::1:1:2*
RPF: Tunnel1,51::1:1:2*
FastEthernet4/10 04:27:50 fwd Join(00:02:48) LI LH
(47::1:1:3,FF0E::E0:1:1:1)
SM SPT UP: 04:27:20 JP: Join(never) Flags: KAT(00:01:04) AA PA RA SR
RPF: Vlan47,47::1:1:3*
FastEthernet4/10 04:27:16 fwd Join(00:03:14)
Tunnel0 04:27:17 fwd
To display the count
of the ranges, (*, G), (S, G) and (S, G) RPT routes in the pim topology tables,
use the
show command
described in the following example.
Router# show ipv6 pim topology route-count
PIM Topology Table Summary
No. of group ranges = 47
No. of (*,G) routes = 11
No. of (S,G) routes = 2
No. of (S,G)RPT routes = 1
To display the IP
multicast group mapping table, use the
show command
described in the following example. It shows group to mode mapping and RP
information in case of sparse-mode groups.
Router# show ipv6 pim group-map FF0E::E0:1:1:1
IP PIM Group Mapping Table
(* indicates group mappings being used)
FF00::/8*
SM, RP: 2021::2021
RPF: Vl104,FE80::4255:39FF:FE89:6284
Info source: Static
Uptime: 02:33:31, Groups: 3
To display the IPv6
multicast range-lists on a per client (config/autorp/BSR) and per mode
(SSM/SM/DM/ Bidir) basis, use the
show command
described in the following example.
Router# show ipv6 pim range-list
Static SSM Exp: never Learnt from : ::
FF33::/32 Up: 02:33:46
FF34::/32 Up: 02:33:46
FF35::/32 Up: 02:33:46
FF36::/32 Up: 02:33:46
FF37::/32 Up: 02:33:46
FF38::/32 Up: 02:33:46
FF39::/32 Up: 02:33:46
FF3A::/32 Up: 02:33:46
FF3B::/32 Up: 02:33:46
FF3C::/32 Up: 02:33:46
FF3D::/32 Up: 02:33:46
FF3E::/32 Up: 02:33:46
FF3F::/32 Up: 02:33:46
Static SM RP: 2021::2021 Exp: never Learnt from : ::
FF00::/8 Up: 02:33:44
To display
information about the PIM register encapsulation and decapsulation tunnels, use
the
show command
described in the following example.
Router# show ipv6 pim tunnel
Tunnel0*
Type : PIM Encap
RP : Embedded RP Tunnel
Source: 2003::2
Tunnel1*
Type : PIM Encap
RP : 2021::2021
Source: 2003::2
To display
information about the PIM traffic counters, use the
show command
described in the following example.
Router# show ipv6 pim traffic
PIM Traffic Counters
Elapsed time since counters cleared: 02:34:35
Received Sent
Valid PIM Packets 613 629
Hello 613 622
Join-Prune 0 7
Data Register 0 -
Null Register 0 0
Register Stop 0 0
Assert 0 0
Bidir DF Election 0 0
Errors:
Malformed Packets 0
Bad Checksums 0
Send Errors 0
Packet Sent on Loopback Errors 0
Packets Received on PIM-disabled Interface 0
Packets Received with Unknown PIM Version 0
Packets drops due to PIM queue limits 0
To display the
average Join/Prune aggregation for the last (1000/10000/50000) packets for each
interface, use the
show command
described in the following example.
Router# show ipv6 pim join-prune statistic
PIM Average Join/Prune Aggregation for last (1K/10K/50K) packets
Interface MTU Transmitted Received
Vlan102 1500 0 / 0 / 0 0 / 0 / 0
Null0 1500 0 / 0 / 0 0 / 0 / 0
FastEthernet0/0 1280 0 / 0 / 0 0 / 0 / 0
GigabitEthernet0/8 1280 0 / 0 / 0 0 / 0 / 0
GigabitEthernet0/9 1280 0 / 0 / 0 0 / 0 / 0
Gi0/10 1280 0 / 0 / 0 0 / 0 / 0
Gi0/11 1280 0 / 0 / 0 0 / 0 / 0
GigabitEthernet0/0 1280 0 / 0 / 0 0 / 0 / 0
GigabitEthernet0/1 1280 0 / 0 / 0 0 / 0 / 0
GigabitEthernet0/2 1280 0 / 0 / 0 0 / 0 / 0
GigabitEthernet0/3 1280 0 / 0 / 0 0 / 0 / 0
GigabitEthernet0/4 1280 0 / 0 / 0 0 / 0 / 0
GigabitEthernet0/5 1280 0 / 0 / 0 0 / 0 / 0
GigabitEthernet0/6 1280 0 / 0 / 0 0 / 0 / 0
GigabitEthernet0/7 1280 0 / 0 / 0 0 / 0 / 0
Vlan1 1280 0 / 0 / 0 0 / 0 / 0
Port-channel1 1280 0 / 0 / 0 0 / 0 / 0
Tunnel0 1452 0 / 0 / 0 0 / 0 / 0
Loopback1 1280 0 / 0 / 0 0 / 0 / 0
Vlan104 1500 0 / 0 / 0 0 / 0 / 0
Tunnel1 1452 0 / 0 / 0 0 / 0 / 0
To display the MRIB
table, use the
show command
described in the following example. All entries are created by various clients
of MRIB, such as, MLD, PIM and MFIB. The flags on each entry or interface,
serve as communication mechanism between various clients of MRIB.
Router# show ipv6 mrib route FF0E::E0:1:1:1
IP Multicast Routing Information Base
Entry flags: L - Domain-Local Source, E - External Source to the Domain,
C - Directly-Connected Check, S - Signal, IA - Inherit Accept, D - Drop
ET - Data Rate Exceeds Threshold,K - Keepalive,DDE - Data Driven Event
ME - MoFRR ECMP Flow based, MNE - MoFRR Non-ECMP Flow based,
MP - Primary MoFRR Non-ECMP Flow based entry
Interface flags: F - Forward, A - Accept, IC - Internal Copy,
NS - Negate Signal, DP - Don't Preserve, SP - Signal Present,
II - Internal Interest, ID - Internal Disinterest, LI - Local Interest,
LD - Local Disinterest, MD - mCAC Denied, MI - mLDP Interest
A2 - MoFRR ECMP Backup Accept
(*,FF45::5) RPF nbr: FE80::4255:39FF:FE89:6284 Flags: C
Vlan104 Flags: A LI
To display the count
of the number of routes in the Multicast RIB, use the
show command
described in the following example.
Router# show ipv6 mrib route summary
MRIB Route-DB Summary
No. of (*,G) routes = 57
No. of (S,G) routes = 3
No. of Route x Interfaces (RxI) = 22
To display
information about the various MRIB clients, use the
show command
described in the following example.
Router# show ipv6 mrib client
IP MRIB client-connections
igmp (0x0):309 (connection id 1)
pim (0x0):342 (connection id 2)
IPv6_mfib(0x1031AFB0):0.358 (connection id 3)
2024#show ipv6 mfib ff45::5
Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag,
ET - Data Rate Exceeds Threshold, K - Keepalive
DDE - Data Driven Event, HW - Hardware Installed
ME - MoFRR ECMP entry, MNE - MoFRR Non-ECMP entry, MP - MFIB
MoFRR Primary, RP - MRIB MoFRR Primary, P - MoFRR Primary
MS - MoFRR Entry in Sync, MC - MoFRR entry in MoFRR Client.
I/O Item Flags: IC - Internal Copy, NP - Not platform switched,
NS - Negate Signalling, SP - Signal Present,
A - Accept, F - Forward, RA - MRIB Accept, RF - MRIB Forward,
MA - MFIB Accept, A2 - Accept backup,
RA2 - MRIB Accept backup, MA2 - MFIB Accept backup
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts: Total/RPF failed/Other drops
I/O Item Counts: FS Pkt Count/PS Pkt Count
Default
(*,FF45::5) Flags: C
SW Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwarding: 0/0/0/0, Other: NA/NA/NA
Vlan104 Flags: A
To display
information about the IPv6 Multicast Forwarding Information Base, in terms of
forwarding entries and interfaces, use the
show command
described in the following example.
Router# show ipv6 mfib FF0E::E0:1:1:1
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
(*,FF0E::E0:1:1:1) Flags: C
Forwarding: 0/0/0/0, Other: 0/0/0
Tunnel1 Flags: A NS
FastEthernet4/10 Flags: F NS
Pkts: 0/0
(47::1:1:3,FF0E::E0:1:1:1) Flags:
Forwarding: 9592618/0/182/0, Other: 0/0/0
Vlan47 Flags: A
Tunnel0 Flags: F NS
Pkts: 0/0
FastEthernet4/10 Flags: F NS
Pkts: 0/9592618
To display the
general MFIB configuration status and operational status, use the
show command
described in the following example.
Router# show ipv6 mfib status
IPv6 Multicast Forwarding (MFIB) status:
Configuration Status: enabled
Operational Status: running
Initialization State: Running
Total signalling packets queued: 0
Process Status: may enable - 3 - pid 358
Tables 1/1/0 (active/mrib/io)
To display summary
information about the number of IPv6 MFIB entries and interfaces, use the
show command
described in the following example.
Router# show ipv6 mfib summary
Default
60 prefixes (60/0/0 fwd/non-fwd/deleted)
21 ioitems (21/0/0 fwd/non-fwd/deleted)
Forwarding prefixes: [3 (S,G), 11 (*,G), 46 (*,G/m)]
Table id 0x0, instance 0x1031AFB0
Database: epoch 0
2024#show ipv6 mfib in
2024#show ipv6 mfib int
2024#show ipv6 mfib interface
IPv6 Multicast Forwarding (MFIB) status:
Configuration Status: enabled
Operational Status: running
Initialization State: Running
Total signalling packets queued: 0
Process Status: may enable - 3 - pid 358
Tables 1/1/0 (active/mrib/io)
MFIB interface status CEF-based output
[configured,available]
Vlan102 up [yes ,yes ]
Vlan104 up [yes ,yes ]
Tunnel0 up [yes ,no ]
Tunnel1 up [yes ,yes ]
To display the IPv6
multicast-enabled interfaces and their forwarding status, use the
show command
described in the following example.
Router# show ipv6 mfib interface
IPv6 Multicast Forwarding (MFIB) status:
Configuration Status: enabled
Operational Status: running
MFIB interface status CEF-based output
[configured,available]
Loopback0 up [yes ,? ]
Vlan46 up [yes ,? ]
Vlan47 up [yes ,? ]
Tunnel0 down [yes ,no ]
Tunnel1 down [yes ,no ]
To display how IPv6
multicast routing does Reverse Path Forwarding, use the
show command
described in the following example.
Router# show ipv6 rpf FE80::4255:39FF:FE89:7404
RPF information for 3::3
RPF interface: Vlan10
RPF neighbor: FE80::4255:39FF:FE89:7404
RPF route/mask: 3::3/128
RPF type: Unicast
RPF recursion count: 0
Metric preference: 110
Metric: 2