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A collection of 5 posts

EIGRP Filtering (GNS3 lab)

EIGRP Filtering (GNS3 lab)

In this GNS3 lab we're looking as the various options on how we can filter updates between EIGRP speakers and then how that affects the traffic flow (as EIGRP is a distance vector protocol we can filter updates :))This is just a lab to look at the different

6to4 Tunnelling (GNS3 Lab)

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

GET VPN (GNS3 Lab)

GET VPN (GNS3 Lab)

Group Encrypted Transport (GET) VPN is slightly different and has quite different use cases from more traditional point to point IPSEC VPN where each point to point VPN is quite distinct in its own right. The most import thing to remember at GET VPN is the "G" means

DMVPN setup with PSK (GNS3 Lab)

DMVPN setup with PSK (GNS3 Lab)

Dynamic Multipoint VPNs (DMVPN) offer a low admin overhead and scalable VPN solution. It is also efficient at routing traffic as it can dynamically reconfigure itself from a hub and spoke to a partial or full mesh topology! This means that not all traffic has to pass through the hub

EIGRP (Named vs Legacy)

EIGRP (Named vs Legacy)

Just a quick look over the basic differences with the newer style of EIGRP config. It really is quite a bit nicer (more logcal?) layout in the config with things like authentication moving under the eigrp config so its easy to see related config under one section of show run