Anyone? Any suggestions ? Thanks and regards, Lovro ... View more

Hi all, Finally I managed to find time to try your suggestion. I tried with L2 andL3 etherchannel, non of them worked like it should. I also attached networkscheme for better explanation. Here are the problems that I encuntered. - L3 Etherchannel - * I configured everything by the book, fallowing your and instructions from cisco http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_25_se/configuration/guide/swethchl.html#wpxref25850 . After that, I added static routes, but strange thing I couldn't see them in ship route static! Anyway.. I managed to get communication on C1 link. Now the statuses of the ports were Gi 0/11 <P>as bundled in Ethc, and Gi 0/2 <s> as suspended. * I tested connectivity by manually disabling port. Problem was that traffic was not routed on C2. In fact I couldn’t get connectivity on C2. I disabled Gi0/11 and also Fa 1/0/2 on the other side, but nothing. * When I enabled ports on both sides, the connectivity was not restored. I had to disable Gi0/2 and Fa 1/0/6, so that other ports get back in the state. Only then communication was restored. So there was no automation! - L2 etherchannel – * Same as previous, after I configured ethc, I added static routes, but   now the routes was visible in routing table ?? * When testing connectivity a managed to get communication on both the C1and C2 line. But again, with no automation. I had to disable one port so that other becomes , on both sides.      Finally I think that etherchannel is not working because if you examine network scheme C2 is passing trough ISP equipment. Maybe PAgPpackets was blocked, or something like that. Any way I decided to try with simple L3 routing. Now…, I would much appreciate if someone could post config example based on the network scheme that I provided. Thanks to all that are trying to help me on this, and I apologize for such long and exhausting post :-) Kind regards, Lovro ... View more

Tnx all for helping me on this. Sorry for the late response, I'm on my holidays, so it will have to wait till I come back to work to try your suggestions. I have to say that most likely I'll try to go with etherchannel solution, or L3 suggestion from Nagaraja. @Eric, we have a little more complicated topology so that is not possible.. @Walter, thanks for posting config example. I'll get back to you with results, when I go back to work, and that would be around 15th of august :-) Regards, Lovro P.S.  Nagaraja, I excidently gave you only 1 star, looks like I can't correct that:-( ... View more

Update.. Both links C1 and C2 are L2! Debugging the problem with ISP we found out why there was a problem with connectivity on C2. The switch in their cloud is configured max mac count to 5. So when switch learns 5 mac addresses, the rest is blocked. I need help how to configure our switches to ''represent'' it self with just one mac something like router, or somehow block mac addresses, so that ISP's switch don't fill it's maximum of 5 MACs? am I making any sence :-) ? Thanks, Lovro ... View more

Hi Jon, Tnx for the reply, and I have to say that I'm only CCNA, i'm little rusty on configuring routers and switches, and this is the first time I'm configuring this kind of communication.      No special configuration was made for those two links, Access mode, and VLAN only. The STP is enabled and it is in PVST mode. When we connect C2 we lose connectivity on both links. But also I did a little test and when I connect only C2 there is no communication with remote location. I have to check with ISP if this link is up, if it's not up it would be really hard to explain why is there loss of connectivity on C1 when I connect C2? Router1 VLAN 5 IP address 10.28.18.1 __________ Router2 VLAN55 IP address 10.28.18.10 On both sides both links are in the same VLAN, router1 in VLAN 5, and router2 VLAN55 How would you configure load balancing ? Can you please post some config examples? Tnx, Lovro ... View more