Thanks for all the help. The problem I was running into was a bug on the Cisco side detailed in the link below. Deleting and recreating the port-channel SVI on the Cisco side fixed the problem.
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsq36972 Thanks, Brian -----Original Message----- From: Tricia Thomas [mailto:[email protected]] Sent: Monday, January 07, 2013 9:54 AM To: Enterasys Customer Mailing List Subject: Re: [enterasys] PVST and RSTP Problems? Hi Brian, I will follow up with you off-list on this. Regards, Tricia Thomas On 01/04/2013 06:13 PM, Kellogg, Brian D. wrote: > Would anyone be willing to share the config on both an Enterasys C5 and a > Cisco switch that I can compare my non-working LAG config to? > > thanks, > Brian > > ________________________________ > From: Tricia Thomas [[email protected]] > Sent: Thursday, January 03, 2013 4:38 PM > To: Enterasys Customer Mailing List > Subject: Re: [enterasys] PVST and RSTP Problems? > > Hi & Happy New Year everyone, > > Sorry, I am late to this discussion. > > We have the same configuration as described by John Kaftan-- RST on the > enterasys side (S*Series and DFE) and "spanning-tree mode rapid-pvst" on the > cisco 6500s. > > We use multi-vlan trunked LAGs between the enterasys equipment at the edge > and the 6500s at the distribution, and have had good success with this for > many years. > > The LAGs on the cisco are configured for dot1q encapsulation and LACP. > > I have had some issues getting this to work with C5s, not sure why, but once > up, these too have been stable. > > > Regards, > > Tricia Thomas > > > -On 12/28/2012 12:30 PM, Baack, Adam wrote: > Thanks for all the help. I think we have a few things to look into now. > > Adam Baack > Sent from my iPhone > > On Dec 28, 2012, at 12:09 PM, "John Kaftan" > <[email protected]<mailto:[email protected]>> wrote: > We had the same problem going between our S4 and our 6509. We moved to RST > on the 6509 (spanning-tree mode rapid-pvst) It was painless and is probably > a good choice so the 6509 was doing RST PVST and the Enterasys stuff was just > doing RST. They seemed to be working well. I would log into the Enterasys > switches and they would recognize the 6509 as the root bridge etc. > > Do you have Netsight? There is a flex view that can help you determine if > you are getting lots of topology changes. Having lots of topology changes > when your network is stable otherwise is a bad thing. It takes up resources > and you will have performance problems. With the flex view you can see the > number of topology changes and when the last topology change took place. If > the number goes up rapidly and the time since the last change is always in > minutes or seconds you have a problem. GTAC should be able to help you with > that. > > As for the LAGs my first question is what is your long term plan? Are you > going with an Enterasys core as well. If so skip the LAGs if you can. We > tried for over a week and could not get a LAG stable between the 6509 and the > S4. We kept getting the same error that you are. We tried filtering BPDUs > on the Cisco because it seemed it was getting confused by the BPDUs coming > accross the LAG. That helped for awhile but then after a couple of days the > LAG went down again with err-disable on the Cisco side. > > Eventually we just bailed since the LAG was used for all traffic between our > users and the server farm we couldn't have it failing. We have been watching > the utilization and it is staying under 1 Gb so that will have to hold us > until we can get the 6509 out of there for good. > > > > > > > On Fri, Dec 28, 2012 at 10:00 AM, Baack, Adam > <[email protected]<mailto:[email protected]>> wrote: > Disclaimer: We are mostly server guys here and know enough switching to be > dangerous. We know very little about spanning tree, etc. > > We're implementing our phase 1 of our Enterasys replacement and have been > installing B5 stacks in all of our headquarter IDFs. They are connecting > back to a Cisco 6509 (Sup 2). > > We just started having problems where the 6509 would err-disable the LACP lag > between the 6509 and the IDFs. The lag is set for trunking. In the terminal > of the 6509 it shows channel mismatch error. We spoke with GTAC and they > said something about the B5 stacks not participating in spanning tree and the > 6509 doesn't know what to do so it disables it. > > Also, some of our IDFs have another Cisco switch farther down... example: > 6509 --> B5 Stack --> Cisco 3750. The 3750 is also trunking. These setups > seem to be the ones with problems. > > GTAC suggested possibly moving from PVST to RSTP so all of our spanning-tree > is the same. Unfortunately I'm not exactly sure how we would do that or if > that's the solution for us. > > Anyone have experience with this type of setup and did you have problems? > > Thanks. > > Adam Baack > Network Administrator > Lee County Sheriff's Office > > > ***IMPORTANT MESSAGE*** > This message is intended for the use of the person or entity to whom > it is addressed and may contain information that is privileged and > confidential, the disclosure of which is governed by applicable law. > If the reader of this email is not the intended recipient or the > employee or agent responsible to deliver it to the intended recipient, > you are hereby notified that any dissemination, distribution or > copying of this information is STRICTLY PROHIBITED. > If you have received this email by error, please notify us immediately > and destroy the related message. This footnote also confirms that this > email message has been swept for the presence of computer viruses, > worms, hostile scripts and other email-borne network threats. PLEASE > NOTE: Florida has a very broad public records law. Most written > communications to or from government officials are public records > available to the public and media upon request. Your email > communications may be subject to public disclosure per Sec. 119 F.S. > > --- > To unsubscribe from enterasys, send email to > [email protected]<mailto:[email protected]> with the body: unsubscribe > enterasys [email protected]<mailto:[email protected]> > > > > -- > John Kaftan > IT Infrastructure Manager > Utica College > > > * --To unsubscribe from enterasys, send email to > [email protected]<mailto:[email protected]> with the body: unsubscribe > enterasys [email protected]<mailto:[email protected]> > > * --To unsubscribe from enterasys, send email to > [email protected]<mailto:[email protected]> with the body: unsubscribe > enterasys [email protected]<mailto:[email protected]> > > > * --To unsubscribe from enterasys, send email to > [email protected]<mailto:[email protected]> with the body: unsubscribe > enterasys [email protected] > > --- > To unsubscribe from enterasys, send email to [email protected] with the > body: unsubscribe enterasys [email protected] --- To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected] --- To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected]
