Two Methods of MPLS Interface Configuration within OSPF

Within all of the practice labs I have worked through for the CCIE Lab exam and in most real world applications I have seen, MPLS networks are run on top of (or within) an...

BGP Best Path Selection: Origin

For the last few days I have been studying for my CCIE R&S lab and have been doing every practice lab I can get my hands on. The one thing they all seem to...

Latency Issues – IP Redirects

Sometimes, you may run into a situation where traffic enters a routed interface and then per the routing table, exits the same interface. For instance, take a look at the topology below: In that topology...

#RoutingTableLive – MPLS Lab

Decided to get at it early this morning since I booked my second CCIE RS attempt last night. This was a good MPLS lab with two VRFs (RED and BLUE). Two clients on each...

BGP – Summarization – Aggregate Address

There are many ways that routes can be shared between BGP neighbors as we all know. Sometimes there are specific requirements though as to how they need to be shared or if you want...

Basic EIGRP Authentication

Security is a great thing isn't it. Let's look at another section of security: EIGRP authentication. This is applied on an interface that is connecting to another host(s) as an EIGRP neighbor. First things...

Controlling Shared BGP Routes

Keeping your router table in check is something that any network administrator should be concerned with, especially with BGP. Accepting a full routing table from your ISP over BGP can put a good bit...