Re: Port flapping:- affecting EIGRP PART 2
Which neighbor router is flapping up and down, I couldn't tell from your message. Do you have any access lists configured, and have you verified that all your hello and hold timers match on all the routers? At 07:25 AM 1/16/01 +, you wrote: >Guys , >thanks for all your help so far.. > >let me elaborate a bit more ..this is our setup > >1 x 3640 router to outside world 2x serial (to diff sites) 1 x FE >goes to >1 x 2948-LG3 FE >Goes to >1 x 6509 Via Fibre >another 6509 is acting as HSRP backup. > >what is happening is that we are getting the bridge port message on the >switch..but we are also (on the MFSC and 3640) getting this EIGRP >message >%DUAL-5-NBRCHANGE :ip-eigrp (AS no) neighbor xx.xx.xx.xx is up :new >adjacency >then >%DUAL-5-NBRCHANGE :ip-eigrp (AS no) neighbor xx.xx.xx.xx is down : holding >time expired >30 secs later .. > >have swapped cable ,switchport, FE card,IOS 12.0.15 >still no good.. > >ANY HELP most apprecieated > >regards > >john >_ >Get your FREE download of MSN Explorer at http://explorer.msn.com > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Port Flapping
John, This could be a very serious problem. It looks like you have a bridging loop. Check both ends of the trunk to make sure everything is set the same: duplex, speed, native vlan, FastetherChannel settings, trunk encapsulation, VLANs allowed on the trunk, etc. This problem can grow to crash your whole network. Very important: do not reboot any of your switches until you have resolved the conflict. A lot of Spanning Tree traffic is definitely to be avoided until the problem is fixed. Try this URL: http://www.cisco.com/warp/public/473/16.html Dave Swink > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > john hudson > Sent: Monday, January 15, 2001 4:56 AM > To: [EMAIL PROTECTED] > Subject: Port Flapping > > > Guy`s i have a problem .. > > some of my trunk port`s keep reporting this message. > > port 2/1 joined bridge port 2/1 > port 2/1 left bridge port 2/1 > > > any idea`s > > > (i think it`s simple,but just don`t know) > > john > > _ > Get your FREE download of MSN Explorer at http://explorer.msn.com > > _ > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Port Flapping
http://www.cisco.com/warp/customer/473/46.html john hudson wrote: > > Guy`s i have a problem .. > > some of my trunk port`s keep reporting this message. > > port 2/1 joined bridge port 2/1 > port 2/1 left bridge port 2/1 > > any idea`s > > (i think it`s simple,but just don`t know) > > john > > _ > Get your FREE download of MSN Explorer at http://explorer.msn.com > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
