show ipv6 router-advertisement
Syntax
show ipv6 router-advertisement <conflicts> <interfaceinterface><prefixprefix/prefix length>Description
Display information about IPv6 router advertisements.
Options
conflicts—Display only the IPv6 router advertisement information that is conflicting.
interfaceinterface—Display IPv6 router advertisement information for the specified interface.
prefixprefix/prefix length—Display IPv6 router advertisement information for the specified prefix.Required Privilege Level
See Also
clear ipv6 router-advertisementOutput Fields
Advertisements sent—Number of router advertisements sent and time since they were sent.
Solicits received—Number of solicitation messages received.
Advertisements received—Number of router advertisements received.
Advertisements from—Names of interfaces from which router advertisements have been received and time since the last one was received.
Managed—Managed address configuration flag. It can be 0 (stateless) or 1 (stateful).
Other configuration—Other stateful configuration flag. It can be 0 (stateless) or 1 (stateful).
Reachable time—The time, in milliseconds, that a node assumes a neighbor is reachable after receiving a reachability confirmation.
Default lifetime—Default lifetime, in seconds. It can be from 0 seconds to 18.2 hours. A setting of0indicates that the router is not a default router.
Retransmit timer—The time, in milliseconds, between retransmitted Neighbor Solicitation messages.
Current hop limit—Configured current hop limit. It can be 1 to 255.
Prefix—Name and length of prefix.
Valid lifetime—Prefix valid lifetime specifies how long the prefix remains valid for onlink determination. By default, thevalid lifetime is set to 2,592,000 seconds. When0xffffffffis specified, the valid lifetime is infinite.
Preferred lifetime—Prefix preferred lifetime specifies how long the prefix generated by stateless autoconfiguration remains preferred. By default, the preferred lifetime is set to 604,800 seconds. When preferred lifetime is set to0xffffffff, the preferred lifetime is infinite. The preferred lifetime is never greater than the valid lifetime.
On link—Onlink flag. It can be "not onlink" (0) or "onlink" (1). The default is 1.
Autonomous—Autonomous address configuration flag. It can be "not autonomous" (0)or autonomous (1). The default is 1.Sample Output: show ipv6 router-advertisement
user@host>show ipv6 router-advertisement prefix 8040::/16Interface: fe-0/1/3.0Advertisements sent: 3, last sent 00:04:11 agoSolicits received: 0Advertisements received: 3Advertisement from fe80::290:69ff:fe9a:5403, heard 00:00:05 agoManaged: 0Other configuration: 0Reachable time: 0 msDefault lifetime: 180 sec [1800 sec]Retransmit timer: 0 msCurrent hop limit: 64Prefix: 8040:1::/64Valid lifetime: 2592000 secPreferred lifetime: 604800 secOn link: 1Autonomous: 1Conflicting information is denoted by displaying the value the router is advertising in brackets:
user@host>show ipv6 router-advertisementInterface: fe-0/1/1.0Advertisements sent: 0Solicits received: 0Advertisements received: 0Interface: fxp0.0Advertisements sent: 0Solicits received: 0Advertisements received: 1Advertisement from fe80::2d0:b7ff:fe1e:7b0e, heard 00:00:13 agoManaged: 0Other configuration: 0 [1]Reachable time: 0 msDefault lifetime: 1800 secRetransmit timer: 0 msCurrent hop limit: 64Sample Output: show ipv6 router-advertisement conflicts
user@host>show ipv6 router-advertisement conflictsInterface: fxp0.0Advertisement from fe80::2d0:b7ff:fe1e:7b0e, heard 00:01:08 agoOther configuration: 0 [1]If there are no conflicts, nothing is displayed:
user@host>show ipv6 router-advertisement conflicts