No no redistribution. I tried to keep it as simple as possible. Ok let me try my hand at some ascii art.
But before i do that, is there some inherent stupid thing about putting vlan interfaces in all the vlans on all the switches ( i have dot1q trunks in x between all 4 switches). I can imagine in my network it would create a loop. Just a hunch if i follow the paths. Would i not automatically introduce L3 loops by doing that. I think ipexpert topology is setup similar ? ok scratch that, i uploaded a small jpg http://tinypic.com/r/fkqfqr/7 All switches loopbacks are reachable by at least 3 paths (2 trough the FR cloud, and 1 other) R2# O 11.11.11.11 [110/66] via 100.100.100.6, 01:01:51, Serial1/1.256 [110/66] via 100.100.100.5, 01:01:51, Serial1/1.256 [110/66] via 100.100.24.4, 00:00:43, Serial1/0.24 44.0.0.0/32 is subnetted, 1 subnets O 44.44.44.44 [110/66] via 100.100.100.6, 01:01:51, Serial1/1.256 [110/66] via 100.100.100.5, 01:01:51, Serial1/1.256 [110/66] via 100.100.24.4, 00:00:43, Serial1/0.24 On a probably unrelated side note, anyone ever got : %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 100.100.14.1, Vlan14 Cisco website says change the port or cable, which i did, and cable, well considering it's a dynamips sim i did that as best as i could :-) Can't get the message to go away though. On Jul 12, 2011, at 5:24 PM, Di Bias, Steve wrote: > > What makes you think you have any kind of loop? What are the symptoms? Are > you redistributing anywhere? > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Alef > Sent: Tuesday, July 12, 2011 8:27 AM > To: [email protected] IE > Subject: [OSL | CCIE_RS] loop in network? > > 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 > > > UHS Confidentiality Notice: This e-mail message, including any attachments, > is for the sole use of the intended recipient (s) and may contain > confidential and privileged information. Any unauthorized review, use, > disclosure or distribution of this information is prohibited. If this was > sent to you in error, please notify the sender by reply e-mail and destroy > all copies of the original message. _______________________________________________ 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
