Hey Andrew, Last night we removed one of the fibers on a port-channel that was showing up and re-inserted it. The link stayed down/down. I decided then to stop until I had a chance to do more research and try to figure out why the interfaces and port-channels were coming up with the other side being down.
I want to put in the port channels to the vPC on the 5010 stack for redundancy and better through put for my customers, but I also don't want to create issues for myself. LOL I have one 2960 that did not come up/up when I setup the 5010 sides. I guess I will just have to bite the bullet and go down and remove the port-channel configurations from the 2960's and redo them one at a time and bring the links up on the 5010's. I am with you, I think the problem is on the 2960's even though I was told that dual-sided vPC wasn't supported on the 5010's. I have one dual-sided vPC up and running to the 2960's so I don't see how it can't be done. :-) Thanks for the advise on defaulting the ports and re-creating the port-channels. Joe On Sat, Mar 16, 2013 at 12:02 PM, Andrew Miehs <[email protected]> wrote: > The port channel would be up as soon as one of the interfaces is up using > static port-channels. > Which interfaces are you using on the 2960? I know you have probably > checked, but do they stay up when you remove the cables? > You don't have any like "no negotiate auto" enabled on the interfaces? > > What does (on the 2960G - as that is where I would guess the problem is) > show etherchannel summary > show int g0/? (channels in etherchannel) > show run int g0/? > show run int port? > > You may want to try default the old interfaces and creating a new > port-channel... > Seems to have helped some people in the past with strange portchannel > issues... > > Good luck... > > Andrew > > > > > > On Sun, Mar 17, 2013 at 2:28 AM, Joseph Hardeman <[email protected]>wrote: > >> Hi Andrew, >> >> No actually they are configured as "mode on" no LACP. I spoke with a >> CCIE a couple of years ago and he told me that use mode on from switch to >> switch and lacp from switch to server so thats what I am putting in. >> >> Any thoughts on why the 2960's ports would turn up even with the 5010's >> ports shut down? >> >> Joe >> >> >> On Sat, Mar 16, 2013 at 12:30 AM, Andrew Miehs <[email protected]> wrote: >> >>> How did you configure the port channels? I assume you have configured >>> them to use lacp? >>> Show etherchannel summary shows? >>> >>> >>> Sent from a mobile device >>> >>> On 16/03/2013, at 13:14, Joseph Hardeman <[email protected]> wrote: >>> >>> > Hi Everyone, >>> > >>> > I saw a very strange thing tonight while putting some vPC ports to a >>> some >>> > access switches. So my Topology is a VSS stack to a pair of 5010 over >>> vPC. >>> > I then have an active vPC from the 5010's to one 2960G port-channel. I >>> > now have this connected to several other 2960G's that are connected >>> over >>> > port-channels and I was wanting to connect those 2960's directly to the >>> > 5010 over vPC, Just like the first one is, for failover and >>> redundancy. >>> > Now with the ports on the 5010 in shutdown and the port channel in >>> > shutdown, as soon as I apply the config on the port connected to a >>> 2960, >>> > the ports on the 2960 go from down/down to up/up even though the 5010 >>> ports >>> > are shutdown. >>> > >>> > So several questions, why would the ports on the 2960's come up and >>> what >>> > can I check to see if something else is happening. Second, is this >>> path a >>> > support configuration? I mean, I have been told that its not >>> "Supported By >>> > Cisco" so that is their way of saying "weird stuff will happen". >>> > >>> > If I can't have vPC going to my VSS engines and then on the other side >>> have >>> > vPC going to another switch, then there goes the benefit of using VSS >>> or >>> > vPC and I might as well have just put everything down single links and >>> not >>> > even worried about providing instant failover on the chance I loose >>> one of >>> > the VSS Engines or a vPC switch. >>> > >>> > Any thoughts on what I am seeing? I haven't seen anything like it >>> before. >>> > >>> > Thanks >>> > >>> > Joe >>> > _______________________________________________ >>> > cisco-nsp mailing list [email protected] >>> > https://puck.nether.net/mailman/listinfo/cisco-nsp >>> > archive at http://puck.nether.net/pipermail/cisco-nsp/ >>> >> >> > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
