Hi Marc, I don't have portfast enabled anywhere, it's merely a academical setup.
On Jul 12, 2011, at 5:20 PM, marc abel wrote: > I didn't see anything attached. > > What symptom are you seeing that makes you suspect a loop? > > In a single OSPF area with no redistribution and no static routes a > layer 3 loop is unlikely. > > Spanning-tree won't protect you from all layer 2 loops if you have > access ports errantly configured and plugged into other switches. > > > -Marc > > On Tue, Jul 12, 2011 at 10:26 AM, Alef <[email protected]> wrote: >> All, >> >> So i have this network, and i am thinking i have a loop. I'm just not sure >> where or how. >> And i think it started happening after i created vlan interfaces in all >> vlans on all switches. So Cat1 is having vlan14,vlan567 and vlan69 >> interfaces and all the other switches in similar. >> >> They are NM16ESW cards, but IEEE stp is running so a Layer2 loop should be >> out of the question. Could i still have a routing loop? >> I am running OSPF in one giant area 0. >> >> How would i go about solving it? I can't use split horizon as OSPF doesn't >> use that. Should i artificially set routes such that they get a lower metric >> and manipulate things like that? >> >> I attached a small picture to clarify (this is taken from the Security lab >> Day4 VoD btw). >> Mind you, it might be something different entirely although i don't think so. >> >> But it's probably going to be something very stupid. And yes, i probably >> don't understand switching very well yet :-) >> >> Alef >> >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> Are you a CCNP or CCIE and looking for a job? Check out >> www.PlatinumPlacement.com >> >> _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
