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we will quickly discuss the use of most commonly needed IGMP timers. First, as we know, multicast routers periodically query hosts on a segm... -
This post will go through from start to finish the configuration required to setup a basic MPLS VPN which has 2 customers, each customer has... -
I would like to share a basic MPLS configuration example where I will explain how MPLS works and what are the different steps in order to co... -
When faced with a troubleshooting ticket involving MPLS you need to clear the basics first to ensure that everything is working from a Label... -
In this post I will talk about Cisco Zone Based Firewall (ZBF) which is a new approach to configure access control in the IOS firewall. I wi... -
Rapid Spanning Tree 802.1w reduced the number of port states from 5 down to 3 this short blog post details the 5 STP port states for Spannin... -
The other day I found a handy script on Cisco EEM scripting community that can automatically archive the running-config if a a change has b... -
While reviewing IEWB VOL 1 VER 5 labs, I discovered a new feature: EIGRP Stub with Leak Map. I spent some time researching the topic and fou... -
While I was doing some BGP labs I came across an interesting topic which is BGP over GRE. Using automatic tunneling techniques along with BG... -
BPDU Filtering, BPDU Guard, and Root Guard are STP security mechanisms. In this post I will only describe BPDU Filtering and BPDU Guard. T...
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