I have 2 hp c-Class enclosures..each have 2 cisco 3020s...so 4 total. these 4 switches connect back to 2 6513s. I am trunking between the 3020s and 6513s...however I am seeing something weird. On the 3020s, I am seeing the interfaces as up and on the 6513s I am seeing the interfaces as down. All my uplinks are fiber. The 6513s are running UDLD Aggressive. I've experimented with aggressive, non-agressive and disabled on the 3020s and have had no luck getting any link on the 6513s. I have confirmed the configurations on both both sides are exactly the same. They are also configured in channel-groups. But I have tried remving the channel-groups from the interfaces and they still did not come up on the 6513 side. Anybody ever run into a problem like this or have any suggestions on what I could try to resolve the issue?
Thank you. This did work on getting the physical link up. I am now having a problem passing traffic. It appreas that the 3020 is not receiving traffic from the 6513.
6513 should be the root bridge for the VLAN, but both devices are showing as root. It appears that there is no communication at layer 2. i am also not seeing the CDP neighbors.
I have tried configuring the links as etherchannel, and removing the etherchannel-leaving just the trunk configured, and also configured the ports as an acess port. all 3 tries gave me the same result.
also, another thing that seemed odd was when I reloaded the 3020 and when it came back up, I had the opposite problem as the first. I saw link up on the 6513 and link down on the 3020. I had to go back on the 6513 and do a 'no speed nonegotiate' then a 'speed nonegotiate' to get the physical link back up.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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