I am having an issue with ipv6 communication over SVI interfaces. This is on Cisco Catalyst 6824 swiches. The SVI has dual stack configuration. I can access on ipv4 but some reason ipv6 is broken. I can see the mac address but ping ipv6 is not responding.
The mac address is visible across the trunk but layer-3 ipv6 reachability is not there. Not sure if there is something missing...
sw-1#
interface Vlan699
vrf forwarding WXZ
ip address 10.66.39.2 255.255.255.240
no ip redirects
no ip proxy-arp
standby version 2
standby 1 ip 10.66.39.1
standby 1 timers msec 200 msec 750
standby 1 priority 110
standby 1 preempt delay minimum 60
standby 1 mac-address 0080.7fed.0699
standby 2 ipv6 autoconfig
standby 2 priority 110
standby 2 preempt delay minimum 60
standby 2 mac-address 0086.7fed.0699
ipv6 address 2DDD:AB1:0:101::1/64
ipv6 enable
no ipv6 redirects
end
sw-2#
interface Vlan699
vrf forwarding WXZ
ip address 10.66.39.3 255.255.255.240
no ip redirects
no ip proxy-arp
standby version 2
standby 1 ip 10.66.39.1
standby 1 timers msec 200 msec 750
standby 1 preempt delay minimum 60
standby 1 mac-address 0080.7fed.0699
standby 2 ipv6 autoconfig
standby 2 preempt delay minimum 60
standby 2 mac-address 0086.7fed.0699
ipv6 address 2DDD:AB1:0:101::2/64
ipv6 enable
no ipv6 redirects
end
sw-1#ping vrf WXZ 10.66.39.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.66.39.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
sw-1#ping vrf WXZ ipv6 2DDD:AB1:0:101::2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2DDD:AB1:0:101::2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
