Spanning-tree inconsistent ports
Ran into this at work the other day and it took me a second to remember what was going on. Inconsistent ports are somewhat of an oddity. Let’s take a… Read more »
Administrative Distance
Admin distance determines which route will be placed in the forwarding table if the same prefix is presented from different sources. Basically, the lowest number wins. So if you hear… Read more »
Best practice – Logging Synchronous
I don’t know how many times I’ve heard people complain about syslog or informational messages interrupting their configuration on Cisco gear. Don’t get frustrated! There are a couple of easy… Read more »
Best practice – GRE Tunnels, specific routes
I’ve known this one for a long time, but once and a great while, I set one up and forget to do this. I know what I did wrong the… Read more »
Process switching, fast switching, CEF
While I’m not sure if this is technically on the exam blueprint, it’s worth a post to discuss the differences between these 3 routing technologies. Let’s talk a little bit… Read more »
eBGP Race condition
I ran into this today at work and I thought it was worth blogging about. So let’s take this example topology… Let’s say that router1 is an edge router providing… Read more »