Use this command to display the IPv6 status of forwarding mode and IPv6 unicast routing mode.
| Format | show ipv6 brief |
| Mode | Privileged EXEC |
| Term | Definition |
|---|---|
| IPv6 Forwarding Mode | Shows whether the IPv6 forwarding mode is enabled. |
| IPv6 Unicast Routing Mode | Shows whether the IPv6 unicast routing mode is enabled. |
| IPv6 Hop Limit | Shows the unicast hop count used in IPv6 packets originated by the node. For more information, see ipv6 hop-limit. |
| ICMPv6 Rate Limit Error Interval | Shows how often the token bucket is initialized with burst-size tokens. For more information, see ipv6 icmp error-interval. |
| ICMPv6 Rate Limit Burst Size | Shows the number of ICMPv6 error messages that can be sent during one burst-interval. For more information, see ipv6 icmp error-interval. |
| Maximum Routes | Shows the maximum IPv6 route table size. |
| IPv6 Unresolved Data Rate Limit | Shows the rate in packets-per-second for the number of IPv6 data packets trapped to CPU when the packet fails to be forwarded in the hardware due to unresolved hardware address of the destined IPv6 node. |
| IPv6 Neighbors Dynamic Renew | Shows the dynamic renewal mode for the periodic NUD (neighbor unreachability detection) run on the existing IPv6 neighbor entries based on the activity of the entries in the hardware. |
| IPv6 NUD Maximum Unicast Solicits | Shows the maximum number of unicast Neighbor Solicitations sent during NUD (neighbor unreachabililty detection) before switching to multicast Neighbor Solicitations. |
| IPv6 NUD Maximum Multicast Solicits | Shows the maximum number of multicast Neighbor Solicitations sent during NUD (neighbor unreachabililty detection) when in UNREACHABLE state. |
| IPv6 NUD Exponential Backoff Multiple | Shows the exponential backoff multiple to be used in the calculation of the next timeout value for Neighbor Solicitation transmission during NUD (neighbor unreachabililty detection) following the exponential backoff algorithm. |
| System uRPF Mode | Shows whether unicast Reverse Path Forwarding (uRPF) is enabled. |
Example: The following shows example CLI display output for the command.
Switch) #show ipv6 brief IPv6 Unicast Routing Mode...................... Disable IPv6 Hop Limit................................. 0 ICMPv6 Rate Limit Error Interval............... 1000 msec ICMPv6 Rate Limit Burst Size................... 100 messages Maximum Routes................................. 4096 IPv6 Unresolved Data Rate Limit................ 1024 pps IPv6 Neighbors Dynamic Renew................... Disable IPv6 NUD Maximum Unicast Solicits.............. 3 IPv6 NUD Maximum Multicast Solicits............ 3 IPv6 NUD Exponential Backoff Multiple.......... 1 System uRPF Mode............................... Enabled
