What is Route Reflector ? Route Reflector are used to solve the issue introduced by IBGP loop prevention. The loop prevention rule states that routes learn from and IBGP neighbor will not be advertised to other IBGP neighbors. So if … Continue reading
A basic understanding of VRFs is necessary in order to move then ISP services like MPLS VPNs. VRFs is also used in situation where BGP and MPLS are not used, the method is called VRF-Lite. What is a VRF ? … Continue reading
HA! I was reviewing a configuration I did some time ago in order to have an exercise for my students and I had the idea to make a blogpost about it. Transition technologies are very interesting and are inevitable. In … Continue reading
So it’s done, I passed the second exam to fullfill the requirements to be HP MASE 2011. The second exam, the HP0-Y37 was less difficult than the first one, probably because it was about some of my favorite subjects like … Continue reading
No posts since some time now, I have been busy working for the CCIE Written Datacenter and then the HP0-Y32 exam which is the first step to HP MASE certification. A quick review on the CCIE DC Written : It’s … Continue reading
What is the Super VLAN ? The SUPER VLAN concept of Huawei is to be able to divide an IP subnet into multiple broadcast domain that can or cannot talk between them. Physical interfaces cannot join a SUPER VLAN, only … Continue reading
Topology Hardware Review Nexus 7K First let’s review the hardware used for this lab : N7K-1-1# show module Mod Ports Module-Type Model Status — —– ———————————– —————— ———- 1 32 1/10 Gbps Ethernet Module N7K-F132XP-15 ok 3 48 10/100/1000 … Continue reading
Just discover this while going through the Cisco configuration guide “NX Fundamentals Configuration Guide” under the Chapter “Understanding the Command Line” at section “Configuring CLI Variables”. What you can do is define persistent or non persistent variable to work with … Continue reading
Overview One basic MPLS VPN services have been implemented, there is various additional services that can run on the top. One example are MPLS Multicast VPN and MPVN services. MPLS Multicast VPN service simply allow your customer to route multicast over … Continue reading
Nexus 1000v components The Nexus 1000v is a software switch running Cisco NX-OS that is destined to be integrated with VMWare vCenter. The goal is to propose a virtual switch that can span across multiple ESX hosts so that networking … Continue reading