Cisco 2960 Management SVI cannot ping directly connected devices in different VLAN
After years of working, a Cisco 2960 with 2 Production VLANS stopped communicating on ONLY one of those two Production VLANS. The 2960 does have a management SVI and its gateway points to a SVI on a direclty connected 3750. Both SVI's can ping each other.
Both 2960 & 3750 are connected via a fiber trunk port - encapsulation is DOT1Q.
The working VLAN's Gateway is a SVI on the 3750 whereas the non-working VLAN's Gateway/SVI is on another 3750. Both 3750's are connected with fiber trunk ports and all 3 switches can ping each other.
Myself and my tech have both verified the routing and all looks good. I even set it up in Packet tracer and it works there.
What is a real mystery is that if I telnet into the 2960 i cannot ping any devices directly connected to it. They are in different subnets but I have other 2960s setup in other areas configured the same way and they can ping their directly attached devices without a problem.
Did I get hit with a solar flare or gremlin attack?
Sincerely,
Perplexed
Both 2960 & 3750 are connected via a fiber trunk port - encapsulation is DOT1Q.
The working VLAN's Gateway is a SVI on the 3750 whereas the non-working VLAN's Gateway/SVI is on another 3750. Both 3750's are connected with fiber trunk ports and all 3 switches can ping each other.
Myself and my tech have both verified the routing and all looks good. I even set it up in Packet tracer and it works there.
What is a real mystery is that if I telnet into the 2960 i cannot ping any devices directly connected to it. They are in different subnets but I have other 2960s setup in other areas configured the same way and they can ping their directly attached devices without a problem.
Did I get hit with a solar flare or gremlin attack?
Sincerely,
Perplexed
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ooh nasty. If you have TAC support, I'd run that past them, particularly if it happens again. Sounds like a possible software bug. Good to hear you resolved it!
ASKER
I solved the problem with a reboot.
Since your problem seems to be at the 2960, start your troubleshooting there. Can you ping the default gateway from the 2960 and post the results.