EIGRP Loop Prevention Logic

Hamid sent me the following question: I have already memorized (bad idea, BTW) that a loop can occur if FD < RD. Could you please tell me...

Beware of the pre-bestpath cost extended BGP community

One of my readers sent me an interesting problem a few days ago: the BGP process running on a PE-router in his MPLS/VPN network preferred an...

EIGRP: an MBA-like perspective

Ahmed was reading my EIGRP book (I know it’s hard to get, but fortunately he found a well-marked copy) and wanted to check his understandin...

Loop-Free Alternate: OSPF meets EIGRP

Assume we have a simple triangular network: Now imagine the A-to-C link fails. How will OSPF react to the link failure as compared to EIGRP?...