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A collection of 3 posts
6to4 Tunnelling (GNS3 Lab)
CCIE

6to4 Tunnelling (GNS3 Lab)

This is a quick lab to look over how 6to4 tunnelling can be implemented using GNS3 1.3 and 3725 (running c3725-adventerprisek9-mz124-15.image). The topology will be as below but the important part if the colouring of the network segments and noticing the middle/core is purely IPv4 only! Our
May 30, 2015 4 min read
BGP RTBH setup using exaBGP
BGP

BGP RTBH setup using exaBGP

In this post I'll describe a basic setup using Cisco IOS, IOS XR and exaBGP that will function as a BGP remotely triggered blackhole (RTBH) allowing you to null route any source/destination prefix. The example topology will be as below: exaBGP by a very nice man called Thomas Mangin
Jan 8, 2014 5 min read
Difference between Router Descriptor (RD) and Route Target (RT)
642-691 BGP+MPLS

Difference between Router Descriptor (RD) and Route Target (RT)

Studying towards the SPEDGE (great word Cisco!) tonight and couldn't quite define exactly Route Descriptors and Route Targets. So lets try First off it might be important (and obvious) to note both RT and RDs will only ever be configured and used on PE nodes! P and CE nodes dont
Jul 9, 2013 2 min read
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