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
