We have a pair of XMR routers configured 100+ VLANs running VSRP downstream and BGP upstream. At random times, the IP information is deleted and I have to go in and reset it.
Each VLAN config looks something like this.
interface ve 99 ip ospf area 0.0.0.0 ip ospf passive ip address 188.8.131.52/27 vlan 99 name ClientName tagged e 1/9 e 2/9 router-interface ve 99 interface ethernet 1/9 enable no route-only interface ethernet 2/9 enable no route-only
Once every 1 to 8 months, we lose the "interface ve" IP address.
#show interface ve 99 Ve99 is up, line protocol is down Type is Vlan (Vlan Id: 99) Hardware is Virtual Ethernet, address is 000c.xxxx.xxxx (bia 000c.xxxx.xxxx) No port name Vlan id: 99 Internet address is 0.0.0.0/0, IP MTU 1500 bytes, encapsulation ethernet
When this happens I'm unable to ping 184.108.40.206 from anywhere including localhost.
To fix it I do:
#no interface ve 99 #interface ve 99 #ip ospf area 0.0.0.0 #ip ospf passive #ip address 220.127.116.11/27
That fixes it immediately.
#show interface ve 99 Ve99 is up, line protocol is up Type is Vlan (Vlan Id: 99) Hardware is Virtual Ethernet, address is 000c.xxxx.xxxx (bia 000c.xxxx.xxxx) No port name Vlan id: 99 Internet address is 18.104.22.168/27, IP MTU 1500 bytes, encapsulation ethernet
But why does it get zeroed out like that? Is this a hardware issue with memory corruption? Rare software bug? Or it this a state that can be entered by design during particular network condition?
There is nothing useful in the log during this event. But is there a way to increase verbosity of the event log on a long term basis? (remember sometimes this doesn't happen for months at a time)