UP/DOWN vlan 100

[alsayed]

Hello!

I have vlan 100 which it has UP/DOWN STATUS.what is reason is?also computer in this Vlan port 1/10 Flap.how can i Trobleshoot?

10xs Again

[JORGE RODRIGUEZ]

Could you provide a bit more information on your L2 topology, single core.. dual core redundant links etc..? is it only one VLAN? , can you post output of show log from switch and router where interface vlan 100 is configured.. this could be symptoms of spanning tree issues.

You may check couple of links,

Check Identifyng loop section

http://www.cisco.com/warp/public/473/170.html#troubleshoot

http://www.cisco.com/warp/public/473/16.html#intro

pls rate any helpful post!

HTH

Jorge

[alsayed]

man

10xs.we have on core and 2 DSs.the access swith has 2 uplink to the DSs.glbp as GWLLOAD BALENCING.