Category: OSPF

Routing loop shambles

This quirk looks into the problems that can arise when using OSPF sham-links over an MPLS network when a dual-homed site is involved.

Asymmetric routing caused by unfiltered redistribution

This quirk demonstrates how the different administrative distances of BGP, combined with the Best Path Selection algorithm can cause asymmetric routing if redistribution isn’t done carefully. As a reminder, each blog will follow 3 sections: The quirk, the search and the work. The quirk… Continue Reading “Asymmetric routing caused by unfiltered redistribution”