A question about LAN design came up and I decided to write a blog post about it. This blog post, however, is not going to cover every LAN design possibilities out there since there are other blogs that covers it – such designs talk about TRILL, FabricPath, SPB, vPC, and etc. I […]

LAN Design

CCDP ARCH book states to avoid CEF (Cisco Express Forwarding) polarization, the recommended way to do is to use alternating input hashes in the core and distribution layer. In the core, use the default hash, which is based on only Layer 3 information. In the distribution layer, use Layer 3 […]

Layer 3 Link Load Balancing

CCDP ARCH book states that the recommended way to load balance an EtherChannel is to use Layer 4 load balancing. How to enable enable Layer 4 load balancing on EtherChannel: Switch (config)# port-channel load-balance src-dst-port Disclosure is a participant in the Amazon Services LLC Associates Program, an affiliate advertising […]

Recommended EtherChannel Load Balancing