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Posts Tagged ‘MP-BGP’

Basic IPv6 Routing

posted in Cisco Networking, Technical
by on May 10th, 2010 tags: , , , , ,

The purpose of this article is to discuss and compare different methods of routing in IPv6. In particular, we will cover configuration of static routing with IPv6, RIPng, OSPFv3, IS-IS for IPv6,  Multi-protocol BGP, and EIGRP. We will also go over the application of some basic troubleshooting commands, including show commands.

To begin, we will use the below topology.

Basic IPv6 Routing

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MPLS VPN Challenge

posted in Cisco Networking, Technical
by on January 23rd, 2010 tags: , , , , , , ,

I spent some time using GNS3 to build out a 3 router lab focusing on a single customer MPLS VPN. Everything went fine initially, OSPF came up, BGP with route reflectors were fine, LDP neighborships established, and I even saw VRF route advertisements across the network. The problem came when I tried to PING across the network on the VRF from one customer subnet to the other, I got nothing. I spent about an hour troubleshooting, looking up examples, and pulling out my imaginary hair before I figured out the problem. In this blog post I will present the lab as it was originally built for the sake of discussion and leave it up to you to figure out where I went wrong and why exactly it wasn’t working.

Here is the networking drawing as built in GNS3:

lab challenge

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