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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... -
For a few days ago I had to find a solution for a customer that could provide VLAN-to-VLAN traffic over Internet between 2 locations. I foun... -
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... -
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... -
In this post I will talk about Cisco Catalyst 3560 QoS. In Basic QoS part 1 I talked about policing and shaping on Cisco IOS routers. To il... -
BPDU Filtering, BPDU Guard, and Root Guard are STP security mechanisms. In this post I will only describe BPDU Filtering and BPDU Guard. T... -
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... -
OSPF is one of the core topics of the CCIE R&S lab exam and therefore one should be an expert at it before attending the lab exam. In t... -
I would like to dedicate this post to MPLS L3 VPNs troubleshooting and more particularly using the Traceroute command. It can be sometimes d... -
we will quickly discuss the use of most commonly needed IGMP timers. First, as we know, multicast routers periodically query hosts on a segm...
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