EIGRP and AF-Interface

0
Within the realm of EIGRP, there are two different modes, classic and named. Classic is the usual version most people are used to where the protocol configuration starts with "router eigrp 123" or something...

DMVPN in a VRF Environment

2
In the lab, I have been introducing vrf environments into everything that I do. MPLS was the tip of the iceberg and then from there, I started tonight going over DMVPN in a vrf...

OSPF LSA Types

1
OSPF is a commonly used IGP used in a wide range of enterprise environments. It uses its algorithm to determine the shortest path to the destination network address. This algorithm is based on the...

BGP Best Path Selection

0
This is a subject that is key to the core of BGP and is something that needs to understood from the start. It is essential to everything that you will study and work with...

Cisco Router IPSec VPN Tunnel Lab (with Video)

0
This post will cover the creation of an IPSec tunnel between two Cisco routers. If you've ever done one of these on an ASA firewall for instance, you will notice right off the bat...

BGP Route Reflectors

0
Within BGP there are two common ways to build a BGP network. Full Mesh With a BGP Route Reflector The end goal is that each of the routers in your network has the prefixes from...

BGP Route Filtering: Prefix Lists

1
Summary Next on the chopping block when it comes to filtering routes shared between BGP neighbors is a prefix list. There isn't anything confusing to this one, the name is pretty accurate. You are simply...