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/
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
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
