I have 2 css 11051's using virtual routers and
redundant-vips. Each running version 5.00 Build
105. Lately the backup css is becoming master
for a second then notices duplicate ip's and
goes back to being the backup. I see messages in the logs for each virtual router like this:
MAY 5 12:35:33 5/1 8644 VRRP-4: Virtual router 24: master on interface 10.0.1.249^M
MAY 5 12:35:33 5/1 8645 VRRP-4: Virtual router 22: master on interface 10.0.2.249^M
MAY 5 12:35:38 5/1 8653 VRRP-4: Virtual router 24: backup on interface 10.0.10.249^M
MAY 5 12:35:38 5/1 8654 VRRP-4: Master is 10.0.1.249^M
MAY 5 12:35:38 5/1 8655 VRRP-4: Virtual router 22: backup on interface 10.0.2.249^M
MAY 5 12:35:38 5/1 8656 VRRP-4: Master is 10.0.2.248^M
MAY 5 12:35:39 5/1 8671 IPV4-4: Duplicate IP address detected: 10.0.1.250 xx-xx-xx-xx-xx-16^M
MAY 5 12:35:39 5/1 8672 IPV4-4: Incoming CE 0x1001f00, incoming (0 based) SLP 0x4^M
MAY 5 12:35:39 5/1 8673 IPV4-4: Duplicate IP address detected: 10.0.2.250 xx-xx-xx-xx-xx-14^M
Virtual-router config is as follows:
Master:
circuit VLAN50
ip address 100.3.248 255.255.255.0
ip virtual-router 50 priority 255 preempt
ip redundant-interface 50 10.0.3.250
ip redundant-vip 50 10.0.3.13
On backup:
circuit VLAN50
ip address 10.0.3.249 255.255.255.0
ip virtual-router 50 priority 100
ip redundant-interface 50 10.0.3.250
ip redundant-vip 50 10.0.3.13
The vrrp flip only occurs for about a
second and the master doesn't seem affected
but some traffic is routing through the
"backup" at the time. Has anyone seen
something like this with virtual-routers?
I know of problems with box to box redundancy
in versions other than 5.00 and 6.10 but
haven't seen anything about this. No network
input/output errors or duplex mismatches
either so don't think its anything external.
Thanks
-Dan
