Table Of Contents

show ipv6 nat translations

show ipv6 neighbors

show ipv6 nhrp

show ipv6 nhrp multicast

show ipv6 nhrp summary

show ipv6 nhrp traffic

show ipv6 ospf

show ipv6 ospf border-routers

show ipv6 ospf database

show ipv6 ospf event

show ipv6 ospf flood-list

show ipv6 ospf interface

show ipv6 ospf neighbor

show ipv6 ospf request-list

show ipv6 ospf retransmission-list

show ipv6 ospf summary-prefix

show ipv6 ospf timers rate-limit

show ipv6 ospf virtual-links

show ipv6 pim bsr

show ipv6 pim df

show ipv6 pim df winner

show ipv6 pim group-map

show ipv6 pim interface

show ipv6 pim join-prune statistic

show ipv6 pim neighbor

show ipv6 pim range-list

show ipv6 pim topology

show ipv6 pim traffic

show ipv6 pim tunnel

show ipv6 policy

show ipv6 port-map

show ipv6 prefix-list

show ipv6 protocols

show ipv6 nat translations

To display active Network Address Translation—Protocol Translation (NAT-PT) translations, use the show ip nat translations command in user EXEC or privileged EXEC mode.

show ipv6 nat translations [icmp | tcp | udp] [verbose]

Syntax Description

icmp	(Optional) Displays detailed information about NAT-PT ICMP translation events.
tcp	(Optional) Displays detailed information about NAT-PT TCP translation events.
udp	(Optional) Displays detailed information about NAT-PT User Datagram Protocol (UDP) translation events.
verbose	(Optional) Displays additional information for each translation table entry, including how long ago the entry was created and used.

Command Modes

User EXEC
Privileged EXEC

Command History

Release	Modification
12.2(13)T	This command was introduced.

Examples

The following is sample output from the show ip nat translations command. Two static translations have been configured between an IPv4 source address and an IPv6 destination, and vice versa.

Router# show ipv6 nat translations

Prot  IPv4 source              IPv6 source 

      IPv4 destination         IPv6 destination 

---   ---                      --- 

      192.168.123.2            2001::2 

---   ---                      --- 

      192.168.122.10           2001::10 

tcp   192.168.124.8,11047      3002::8,11047 

      192.168.123.2,23         2001::2,23 

udp   192.168.124.8,52922      3002::8,52922 

      192.168.123.2,69         2001::2,69 

udp   192.168.124.8,52922      3002::8,52922 

      192.168.123.2,52922      2001::2,52922 

---   192.168.124.8            3002::8 

      192.168.123.2            2001::2 

---   192.168.124.8            3002::8 

      ---                      --- 

---   192.168.121.4            5001::4 

      ---                      ---

The following is sample output that includes the verbose keyword:

Router# show ipv6 nat translations verbose

Prot  IPv4 source              IPv6 source 

      IPv4 destination         IPv6 destination 

---   ---                      --- 

      192.168.123.2            2001::2 

      create 00:04:24, use 00:03:24, 

---   ---                      --- 

      192.168.122.10           2001::10 

      create 00:04:24, use 00:04:24, 

tcp   192.168.124.8,11047      3002::8,11047 

      192.168.123.2,23         2001::2,23 

      create 00:03:24, use 00:03:20, left 00:16:39, 

udp   192.168.124.8,52922      3002::8,52922 

      192.168.123.2,69         2001::2,69 

      create 00:02:51, use 00:02:37, left 00:17:22, 

udp   192.168.124.8,52922      3002::8,52922 

      192.168.123.2,52922      2001::2,52922 

      create 00:02:48, use 00:02:30, left 00:17:29, 

---   192.168.124.8            3002::8 

      192.168.123.2            2001::2 

      create 00:03:24, use 00:02:34, left 00:17:25, 

---   192.168.124.8            3002::8 

      ---                      --- 

      create 00:04:24, use 00:03:24, 

---   192.168.121.4            5001::4 

      ---                      --- 

      create 00:04:25, use 00:04:25,

Table 141 describes the significant fields shown in the display.

Table 141 show ipv6 nat translations Field Descriptions 

Field	Description
Prot	Protocol of the port identifying the address.
IPv4 source/IPv6 source	The IPv4 or IPv6 source address to be translated.
IPv4 destination/IPv6 destination	The IPv4 or IPv6 destination address.
create	How long ago the entry was created (in hours:minutes:seconds).
use	How long ago the entry was last used (in hours:minutes:seconds).
left	Time before the entry times out (in hours:minutes:seconds).

Related Commands

Command	Description
clear ipv6 nat translation	Clears dynamic NAT-PT translations from the translation state table.

show ipv6 neighbors

To display IPv6 neighbor discovery (ND) cache information, use the show ipv6 neighbors command in user EXEC or privileged EXEC mode.

show ipv6 neighbors [interface-type interface-number | ipv6-address | ipv6-hostname | statistics ]

Syntax Description

interface-type	(Optional) Specifies the type of the interface from which IPv6 neighbor information is to be displayed.
interface-number	(Optional) Specifies the number of the interface from which IPv6 neighbor information is to be displayed.
ipv6-address	(Optional) Specifies the IPv6 address of the neighbor. This argument must be in the form documented in RFC 2373 where the address is specified in hexadecimal using 16-bit values between colons.
ipv6-hostname	(Optional) Specifies the IPv6 host name of the remote networking device.
statistics	(Optional) Displays ND cache statistics.

Command Default

All IPv6 ND cache entries are listed.

Command Modes

User EXEC
Privileged EXEC

Command History

Release	Modification
12.2(2)T	This command was introduced.
12.2(8)T	Support for static entries in the IPv6 neighbor discovery cache was added to the command output.
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)SXH	This command was integrated into Cisco IOS Release 12.2(33)SXH.

Usage Guidelines

When the interface-type and interface-number arguments are not specified, cache information for all IPv6 neighbors is displayed. Specifying the interface-type and interface-number arguments displays only cache information about the specified interface.

Specifying the statistics keyword displays ND cache statistics.

Examples

The following is sample output from the show ipv6 neighbors command when entered with an interface type and number:

Router# show ipv6 neighbors ethernet 2

IPv6 Address                              Age Link-layer Addr State Interface

2000:0:0:4::2                               0 0003.a0d6.141e  REACH Ethernet2

FE80::203:A0FF:FED6:141E                    0 0003.a0d6.141e  REACH Ethernet2

3001:1::45a                                 - 0002.7d1a.9472  REACH Ethernet2

The following is sample output from the show ipv6 neighbors command when entered with an IPv6 address:

Router# show ipv6 neighbors 2000:0:0:4::2

IPv6 Address                              Age Link-layer Addr State Interface

2000:0:0:4::2                               0 0003.a0d6.141e  REACH Ethernet2

Table 142 describes the significant fields shown in the displays.

Table 142 show ipv6 neighbors Field Descriptions 

Field	Description
IPv6 Address	IPv6 address of neighbor or interface.
Age	Time (in minutes) since the address was confirmed to be reachable. A hyphen (-) indicates a static entry.
Link-layer Addr	MAC address. If the address is unknown, a hyphen (-) is displayed.
State	The state of the neighbor cache entry. Following are the states for dynamic entries in the IPv6 neighbor discovery cache: •INCMP (Incomplete)—Address resolution is being performed on the entry. A neighbor solicitation message has been sent to the solicited-node multicast address of the target, but the corresponding neighbor advertisement message has not yet been received. •REACH (Reachable)—Positive confirmation was received within the last ReachableTime milliseconds that the forward path to the neighbor was functioning properly. While in REACH state, the device takes no special action as packets are sent. •STALE—More than ReachableTime milliseconds have elapsed since the last positive confirmation was received that the forward path was functioning properly. While in STALE state, the device takes no action until a packet is sent. •DELAY—More than ReachableTime milliseconds have elapsed since the last positive confirmation was received that the forward path was functioning properly. A packet was sent within the last DELAY_FIRST_PROBE_TIME seconds. If no reachability confirmation is received within DELAY_FIRST_PROBE_TIME seconds of entering the DELAY state, send a neighbor solicitation message and change the state to PROBE. •PROBE—A reachability confirmation is actively sought by resending neighbor solicitation messages every RetransTimer milliseconds until a reachability confirmation is received. •????—Unknown state. Following are the possible states for static entries in the IPv6 neighbor discovery cache: •INCMP (Incomplete)—The interface for this entry is down. •REACH (Reachable)—The interface for this entry is up. Note Reachability detection is not applied to static entries in the IPv6 neighbor discovery cache; therefore, the descriptions for the INCMP (Incomplete) and REACH (Reachable) states are different for dynamic and static cache entries.
Interface	Interface from which the address was reachable.

The following is sample output from the show ipv6 neighbors command with the statistics keyword:

Router# show ipv6 neighbor statistics 

IPv6 ND Statistics

 Entries 2, High-water 2, Gleaned 1, Scavenged 0

 Entry States

   INCMP 0  REACH 0  STALE 2  GLEAN 0  DELAY 0  PROBE 0

 Resolutions (INCMP)

   Requested 1, timeouts 0, resolved 1, failed 0

   In-progress 0, High-water 1, Throttled 0, Data discards 0

 Resolutions (PROBE)

   Requested 3, timeouts 0, resolved 3, failed 0

Table 143 describes the significant fields shown in this display:

Table 143 show ipv6 neighbors statistics Field Descriptions 

Field	Description
Entries	Total number of ND neighbor entries in the ND cache.
High-Water	Maximum amount (so far) of ND neighbor entries in ND cache.
Gleaned	Number of ND neighbor entries gleaned (that is, learned from a neighbor NA or other ND packet).
Scavenged	Number of stale ND neighbor entries that have timed out and been removed from the cache.
Entry States1	Number of ND neighbor entries in each state.
Resolutions (INCMP)	Statistics for neighbor resolutions attempted in INCMP state1 (that is, resolutions prompted by a data packet). Details about the resolutions attempted in INCMP state are follows: •Requested—Total number of resolutions requested. •Timeouts—Number of timeouts during resolutions. •Resolved—Number of successful resolutions. •Failed—Number of unsuccessful resolutions. •In-progress—Number of resolutions in progress. •High-water—Maximum number (so far) of resolutions in progress. •Throttled—Number of times resolution request was ignored due to maximum number of resolutions in progress limit. •Data discards—Number of data packets discarded that are awaiting neighbor resolution.
Resolutions (PROBE)	Statistics for neighbor resolutions attempted in PROBE state (that is, re-resolutions of existing entries prompted by a data packet): •Requested—Total number of resolutions requested. •Timeouts—Number of timeouts during resolutions. •Resolved—Number of successful resolutions. •Failed—Number of unsuccessful resolutions.

1 Reachability detection is not applied to static entries in the IPv6 neighbor discovery cache. A static entry is always in the REACH (Reachable) state unless the associated interface is down or IPv6 is not enabled on the interface.

show ipv6 nhrp

To display Next Hop Resolution Protocol (NHRP) mapping information, use the show ipv6 nhrp command in user EXEC or privileged EXEC mode.

show ipv6 nhrp [dynamic [ipv6-address] | incomplete | static] [address | interface] [brief | detail] [purge]

Syntax Description

dynamic	(Optional) Displays dynamic (learned) IPv6-to-nonbroadcast multiaccess address (NBMA) mapping entries. Dynamic NHRP mapping entries are obtained from NHRP resolution/registration exchanges. See Table 144 for types, number ranges, and descriptions.
ipv6-address	(Optional) The IPv6 address of the cache entry.
incomplete	(Optional) Displays information about NHRP mapping entries for which the IPv6-to-NBMA is not resolved. See Table 144 for types, number ranges, and descriptions.
static	(Optional) Displays static IPv6-to-NBMA address mapping entries. Static NHRP mapping entries are configured using the ipv6 nhrp map command. See Table 144 for types, number ranges, and descriptions.
address	(Optional) NHRP mapping entry for specified protocol addresses.
interface	(Optional) NHRP mapping entry for the specified interface. See Table 144 for types, number ranges, and descriptions.
brief	(Optional) Displays a short output of the NHRP mapping.
detail	(Optional) Displays detailed information about NHRP mapping.
purge	(Optional) Displays NHRP purge information.

Command Modes

User EXEC (>)
Privileged EXEC (#)

Command History

Release	Modification
12.4(20)T	This command was introduced.

Usage Guidelines

Table 144 lists the valid types, number ranges, and descriptions for the optional interface argument.

---

Note The valid types can vary according to the platform and interfaces on the platform.

---

Table 144 Valid Types, Number Ranges, and Interface Description 

Valid Types	Number Ranges	Interface Descriptions
async	1	Async
atm	0 to 6	ATM
bvi	1 to 255	Bridge-Group Virtual Interface
cdma-ix	1	CDMA Ix
ctunnel	0 to 2147483647	C-Tunnel
dialer	0 to 20049	Dialer
ethernet	0 to 4294967295	Ethernet
fastethernet	0 to 6	FastEthernet IEEE 802.3
lex	0 to 2147483647	Lex
loopback	0 to 2147483647	Loopback
mfr	0 to 2147483647	Multilink Frame Relay bundle
multilink	0 to 2147483647	Multilink-group
null	0	Null
port-channel	1 to 64	Port channel
tunnel	0 to 2147483647	Tunnel
vif	1	PGM multicast host
virtual-ppp	0 to 2147483647	Virtual PPP
virtual-template	1 to 1000	Virtual template
virtual-tokenring	0 to 2147483647	Virtual Token Ring
xtagatm	0 to 2147483647	Extended tag ATM

Examples

The following is sample output from the show ipv6 nhrp command:

Router# show ipv6 nhrp

2001:0db8:3c4d:0015::1a2f:3d2c/48  via 

2001:0db8:3c4d:0015::1a2f:3d2c

Tunnel0 created 6d05h, never expire

Table 145 describes the significant fields shown in the display.

Table 145 show ipv6 nhrp Field Descriptions 

Field	Description
2001:0db8:3c4d:0015::1a2f: 3d2c/48	Target network.
2001:0db8:3c4d:0015::1a2f:3d2c	Next hop to reach the target network.
Tunnel0	Interface through which the target network is reached.
created 6d05h	Length of time since the entry was created (dayshours).
never expire	Indicates that static entries never expire.

The following is sample output from the show ipv6 nhrp command using the brief keyword:

Router# show ipv6 nhrp brief

2001:0db8:3c4d:0015:0000:0000:1a2f:3d2c/48

via 2001:0db8:3c4d:0015:0000:0000:1a2f:3d2c

Interface: Tunnel0 Type: static

NBMA address: 10.11.11.99

Table 146 describes the significant fields shown in the display.

Table 146 show ipv6 nhrp brief Field Descriptions 

Field	Description
2001:0db8:3c4d:0015:0000:0000: 1a2f:3d2c/48	Target network.
via 2001:0db8:3c4d:0015:0000:0000: 1a2f:3d2c	Next Hop to reach the target network.
Interface: Tunnel0	Interface through which the target network is reached.
Type: static	Type of tunnel. The types can be one of the following: •dynamic—NHRP mapping is obtained dynamically. The mapping entry is created using information from the NHRP resolution and registrations. •static—NHRP mapping is configured statically. Entries configured by the ipv6 nhrp map command are marked static. •incomplete—The NBMA address is not known for the target network.

Related Commands

Command	Description
ipv6 nhrp map	Statically configures the IPv6-to-NBMA address mapping of IP destinations connected to an NBMA network.

show ipv6 nhrp multicast

To display Next Hop Resolution Protocol (NHRP) multicast mapping information, use the show ipv6 nhrp multicast command in user EXEC or privileged EXEC mode.

show ipv6 nhrp multicast [ipv6-address | interface]

Syntax Description

ipv6-address	(Optional) The IPv6 address of the multicast mapping entry.
interface	(Optional) All multicast mapping entries of the NHRP network for the interface. See Table 147 for interface types, number ranges, and descriptions.

Command Modes

User EXEC (>)
Privileged EXEC (#)

Command History

Release	Modification
12.4(20)T	This command was introduced.

Usage Guidelines

Table 147 lists the valid types, number ranges, and descriptions for the optional interface argument.

---

Note The valid types can vary according to the platform and interfaces on the platform.

---

Table 147 Valid Types, Number Ranges, and Interface Descriptions 

Valid Types	Number Ranges	Interface Descriptions
async	1	Async
atm	0 to 6	ATM
bvi	1 to 255	Bridge-Group Virtual Interface
cdma-ix	1	CDMA Ix
ctunnel	0 to 2147483647	C-Tunnel
dialer	0 to 20049	Dialer
ethernet	0 to 4294967295	Ethernet
fastethernet	0 to 6	FastEthernet IEEE 802.3
lex	0 to 2147483647	Lex
loopback	0 to 2147483647	Loopback
mfr	0 to 2147483647	Multilink Frame Relay bundle
multilink	0 to 2147483647	Multilink-group
null	0	Null
port-channel	1 to 64	Port channel
tunnel	0 to 2147483647	Tunnel
vif	1	PGM multicast host
virtual-ppp	0 to 2147483647	Virtual PPP
virtual-template	1 to 1000	Virtual template
virtual-tokenring	0 to 2147483647	Virtual Token Ring
xtagatm	0 to 2147483647	Extended tag ATM

Related Commands

Command	Description
ipv6 nhrp map	Statically configures the IPv6-to-NBMA address mapping of IPv6 destinations connected to an NBMA network.

show ipv6 nhrp summary

To display Next Hop Resolution Protocol (NHRP) mapping summary information, use the show ipv6 nhrp summary command in user EXEC or privileged EXEC mode.

show ipv6 nhrp summary

Syntax Description

This command has no arguments or keywords.

Command Modes

User EXEC (>)
Privileged EXEC (#)

Command History

Release	Modification
12.4(20)T	This command was introduced.

Usage Guidelines

Use this command to monitor NHRP.

Examples

The following is sample output from the show ipv6 nhrp summary command:

Router# show ipv6 nhrp summary

IPV6 NHRP cache 1 entry, 256 bytes

    1 static  0 dynamic  0 incomplete

Table 148 describes the significant field shown in the display.

Table 148 show ipv6 nhrp summary Field Descriptions 

Field Output	Description
static	NHRP mapping is configured statically. Entries configured by the ipv6 nhrp map command are marked static.
dynamic	NHRP mapping is obtained dynamically. The mapping entry is created using information from the NHRP resolution and registrations
incomplete	The nonbroadcast multiaccess (NBMA) address is not known for the target network.

Related Commands

Command	Description
ip nhrp map	Statically configures the IPv6-to-NBMA address mapping of IP destinations connected to an NBMA network.
show ipv6 nhrp	Displays NHRP mapping information.

show ipv6 nhrp traffic

To display Next Hop Resolution Protocol (NHRP) traffic statistics, use the show ipv6 nhrp traffic command in privileged EXEC mode.

show ipv6 nhrp traffic [interface tunnel number]

Syntax Description

interface	(Optional) Displays NHRP traffic information for a given interface.
tunnel number	(Optional) Specifies the tunnel interface number.

Command Modes

Privileged EXEC (#)

Command History

Release	Modification
12.4(20)T	This command was introduced.

Usage Guidelines

Use this command to monitor NHRP traffic information.

Examples

The following example provides output for IPv6 NHRP traffic statistics:

Router# show ipv6 nhrp traffic

Tunnel0: Max-send limit:100Pkts/10Sec, Usage:0%

Sent: Total 8

1 Resolution Request 1 Resolution Reply 6 Registration Request

0 Registration Reply 0 Purge Request 0 Purge Reply

0 Error Indication 0 Traffic Indication

Rcvd: Total 5

1 Resolution Request 1 Resolution Reply 0 Registration Request

2 Registration Reply 0 Purge Request 0 Purge Reply

0 Error Indication 1 Traffic Indication

Table 148 describes the significant field shown in the display.

Table 149 show ipv6 nhrp traffic Field Descriptions 

Field Output	Description
tunnel0:	Displays information about a specified tunnel; in thhis case, Tunnel0.
Max-send limit: 100Pkts/10Sec, Usage: 0%	The maximum number of packets allowed to be sent in a specified time, and the current usage.
Sent: Total 8	Number of packets sent.
1 Resolution Request 1 Resolution Reply 6 Registration Request 0 Registration Reply 0 Purge Request 0 Purge Reply	Description and breakdown of of the types of packets sent.
0 Error Indication 0 Traffic Indication	Number of errors in the sent packets.
Rcvd: Total 5	Number of packets received.
1 Resolution Request 1 Resolution Reply 0 Registration Request 2 Registration Reply 0 Purge Request 0 Purge Reply	Description and breakdown of the types of packets received.
0 Error Indication 1 Traffic Indication	Number of errors in the sent packets.

show ipv6 ospf

To display general information about Open Shortest Path First (OSPF) routing processes, use the show ipv6 ospf command in user EXEC or privileged EXEC mode.

show ipv6 ospf [process-id] [area-id] [rate-limit]

Syntax Description

process-id	(Optional) Internal identification. It is locally assigned and can be any positive integer. The number used here is the number assigned administratively when the OSPF routing process is enabled.
area-id	(Optional) Area ID. This argument displays information about a specified area only.
rate-limit	(Optional) Rate-limited link-state advertisements (LSAs). This keyword displays LSAs that are currently being rate limited, together with the remaining time to the next generation.

Command Modes

User EXEC
Privileged EXEC

Command History

Release	Modification
12.0(24)S	This command was introduced.
12.2(15)T	This command was integrated into Cisco IOS Release 12.2(15)T.
12.2(18)S	This command was integrated into Cisco IOS Release 12.2(18)S.
12.3(4)T	Command output is changed when authentication is enabled.
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.
12.4(9)T	Command output was updated to display OSPF for IPv6 encryption information.
12.4(15)XF	Command output was modified to include VMI PPPoE process-level values.
12.4(15)T	This command was integrated into Cisco IOS Release 12.4(15)T
12.2(33)SXH	This command was integrated into Cisco IOS Release 12.2(33)SXH.
12.2(33)SRC	The rate-limit keyword was added. Command output was modified to include the configuration values for SPF and LSA throttling timers.
12.2(33)SB	This command was integrated into Cisco IOS Release 12.2(33)SB.

Examples

show ipv6 ospf Output Example

The following is sample output from the show ipv6 ospf command:

Router# show ipv6 ospf

Routing Process "ospfv3 1" with ID 10.10.10.1

 SPF schedule delay 5 secs, Hold time between two SPFs 10 secs

 Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs

 LSA group pacing timer 240 secs

 Interface flood pacing timer 33 msecs

 Retransmission pacing timer 66 msecs

 Number of external LSA 0. Checksum Sum 0x000000

 Number of areas in this router is 1. 1 normal 0 stub 0 nssa

    Area BACKBONE(0)

        Number of interfaces in this area is 1

        MD5 Authentication, SPI 1000

        SPF algorithm executed 2 times

        Number of LSA 5. Checksum Sum 0x02A005

        Number of DCbitless LSA 0

        Number of indication LSA 0

        Number of DoNotAge LSA 0

        Flood list length 0

Table 150 describes the significant fields shown in the display.

Table 150 show ipv6 ospf Field Descriptions 

Field	Description
Routing process "ospfv3 1" with ID 10.10.10.1	Process ID and OSPF router ID.
LSA group pacing timer	Configured LSA group pacing timer (in seconds).
Interface flood pacing timer	Configured LSA flood pacing timer (in milliseconds).
Retransmission pacing timer	Configured LSA retransmission pacing timer (in milliseconds).
Number of areas	Number of areas in router, area addresses, and so on.

show ipv6 ospf With Area Encryption Example

The following sample output shows the show ipv6 ospf command with area encryption information:

Router# show ipv6 ospf 

Routing Process "ospfv3 1" with ID 10.0.0.1 

It is an area border router 

SPF schedule delay 5 secs, Hold time between two SPFs 10 secs 

Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs 

LSA group pacing timer 240 secs 

Interface flood pacing timer 33 msecs 

Retransmission pacing timer 66 msecs 

Number of external LSA 0. Checksum Sum 0x000000 

Number of areas in this router is 2. 2 normal 0 stub 0 nssa 

Reference bandwidth unit is 100 mbps 

    Area BACKBONE(0) 

        Number of interfaces in this area is 2 

        SPF algorithm executed 3 times 

        Number of LSA 31. Checksum Sum 0x107493 

        Number of DCbitless LSA 0 

        Number of indication LSA 0 

        Number of DoNotAge LSA 20 

        Flood list length 0 

    Area 1 

        Number of interfaces in this area is 2 

        NULL Encryption SHA-1 Auth, SPI 1001 

        SPF algorithm executed 7 times 

        Number of LSA 20. Checksum Sum 0x095E6A 

        Number of DCbitless LSA 0 

        Number of indication LSA 0 

        Number of DoNotAge LSA 0 

        Flood list length 0 

Table 151 describes the significant fields shown in the display.

Table 151 show ipv6 ospf with Area Encryption Information Field Descriptions 

Field	Description
Area 1	Subsequent fields describe area 1.
NULL Encryption SHA-1 Auth, SPI 1001	Displays the encryption algorithm (in this case, null, meaning no encryption algorithm is used), the authentication algorithm (SHA-1), and the security policy index (SPI) value (1001).

The following example displays the configuration values for SPF and LSA throttling timers:

Router# show ipv6 ospf

 Routing Process "ospfv3 1" with ID 10.9.4.1

 Event-log enabled, Maximum number of events: 1000, Mode: cyclic

 It is an autonomous system boundary router

 Redistributing External Routes from,

    ospf 2

 Initial SPF schedule delay 5000 msecs

 Minimum hold time between two consecutive SPFs 10000 msecs

 Maximum wait time between two consecutive SPFs 10000 msecs

 Minimum LSA interval 5 secs

 Minimum LSA arrival 1000 msecs

Table 152 describes the significant fields shown in the display.

Table 152 show ipv6 ospf with SPF and LSA Throttling Timer Field Descriptions 

Field	Description
Initial SPF schedule delay	Delay time of SPF calculations.
Minimum hold time between two consecutive SPFs	Minimum hold time between consecutive SPF calculations.
Maximum wait time between two consecutive SPFs 10000 msecs	Maximum hold time between consecutive SPF calculations.
Minimum LSA interval 5 secs	Minimum time interval (in seconds) between link-state advertisements.
Minimum LSA arrival 1000 msecs	Maximum arrival time (in milliseconds) of link-state advertisements.

The following example shows information about LSAs that are currently being rate limited:

Router# show ipv6 ospf rate-limit

List of LSAs that are in rate limit Queue

    LSAID: 0.0.0.0 Type: 0x2001 Adv Rtr: 10.55.55.55 Due in: 00:00:00.500

    LSAID: 0.0.0.0 Type: 0x2009 Adv Rtr: 10.55.55.55 Due in: 00:00:00.500

Table 153 describes the significant fields shown in the display.

Table 153 show ipv6 ospf rate-limit Field Descriptions 

Field	Description
LSAID	Link-state ID of the LSA.
Type	Description of the LSA.
Adv Rtr	ID of the advertising router.
Due in:	Remaining time until the generation of the next event.

show ipv6 ospf border-routers

To display the internal Open Shortest Path First (OSPF) routing table entries to an Area Border Router (ABR) and Autonomous System Boundary Router (ASBR), use the show ipv6 ospf border-routers command in user EXEC or privileged EXEC mode.

show ip ospf [process-id] border-routers

Syntax Description

process-id

(Optional) Internal identification. It is locally assigned and can be any positive integer. The number used here is the number assigned administratively when the OSPF routing process is enabled.

Command Modes

User EXEC
Privileged EXEC

Command History

Release	Modification
12.0(24)S	This command was introduced.
12.2(15)T	This command was integrated into Cisco IOS Release 12.2(15)T.
12.2(18)S	This command was integrated into Cisco IOS Release 12.2(18)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.

Examples

The following is sample output from the show ipv6 ospf border-routers command:

Router# show ipv6 ospf border-routers 

OSPFv3 Process 1 internal Routing Table

Codes: i - Intra-area route, I - Inter-area route

i 172.16.4.4 [2] via FE80::205:5FFF:FED3:5808, FastEthernet0/0, ABR, Area 1, SPF 13

i 172.16.4.4 [1] via FE80::205:5FFF:FED3:5406, POS4/0, ABR, Area 0, SPF 8

i 172.16.3.3 [1] via FE80::205:5FFF:FED3:5808, FastEthernet0/0, ASBR, Area 1, SPF 3

Table 154 describes the significant fields shown in the display.

Table 154 show ipv6 ospf border-routers Field Descriptions 

Field	Description
i - Intra-area route, I - Inter-area route	The type of this route.
172.16.4.4, 172.16.3.3	Router ID of the destination router.
[2], [1]	Metric used to reach the destination router.
FE80::205:5FFF:FED3:5808, FE80::205:5FFF:FED3:5406, FE80::205:5FFF:FED3:5808	Link-local routers.
FastEthernet0/0, POS4/0	The interface on which the IPv6 OSPF protocol is configured.
ABR	Area border router.
ASBR	Autonomous system boundary router.
Area 0, Area 1	The area ID of the area from which this route is learned.
SPF 13, SPF 8, SPF 3	The internal number of the shortest path first (SPF) calculation that installs this route.

show ipv6 ospf database

To display lists of information related to the Open Shortest Path First (OSPF) database for a specific router, use the show ipv6 ospf database command in user EXEC or privileged EXEC mode. The various forms of this command deliver information about different OSPF link-state advertisements (LSAs).

show ipv6 ospf [process-id [area-id]] database [adv-router router-id | self-originate] [internal]

show ipv6 ospf [process-id [area-id]] database [database-summary]

show ipv6 ospf [process-id [area-id]] database [external [ipv6-prefix] [link-state-id]] | [adv-router router-id | self-originate] [internal]

show ipv6 ospf [process-id [area-id]] database [inter-area prefix [ipv6-prefix] [link-state-id]] | [adv-router router-id | self-originate] [internal]

show ipv6 ospf [process-id [area-id]] database [inter-area router [destination-router-id] [link-state-id]] | [adv-router router-id | self-originate] [internal]

show ipv6 ospf [process-id [area-id]] database [link [interface interface-name] [link-state-id]] [adv-router router-id | self-originate] [internal]

show ipv6 ospf [process-id [area-id]] database [network [link-state-id]] [adv-router router-id | self-originate] [internal]

show ipv6 ospf [process-id [area-id]] database [nssa-external [ipv6-prefix] [link-state-id]] [adv-router router-id | self-originate] [internal]

show ipv6 ospf [process-id [area-id]] database [prefix [ref-lsa {router | network}] [link-state-id]] [adv-router router-id | self-originate