Hair-pining in a Wide Area Network – Simple Design Scenario
In this post we will discuss how hair-pining is occurring in some topologies in the Enterprise  bra
Read MoreEIGRP in the Service Provider Networks
EIGRP in the Service Provider Networks. If you are wondering whether EIGRP (Enhanced Interior Gatewa
Read MoreDifferent IGP and BGP Methodologies of Multi National Service Providers
Different IGP and BGP Methodologies of Multi National Service Providers. I mentioned two different I
Read MoreIP Fast Reroute, LFA and Remote LFA Discussion for real network deployment
IP Fast Reroute , LFA (Loop Free Alternate) , Remote LFA and in general recovery and protection disc
Read MoreIS-IS Overload Bit – Why IS-IS Overload bit is used ? What are the use cases ?
IS-IS Overload Bit - Why IS-IS Overload bit is used ? What are the use cases ? In this post, I wil
Read MoreIS-IS Case Study – Ausnet
This is a case study which provides a detailed design steps for IGP protocol on hypothetical Interne
Read MoreIs Inter-AS MPLS VPNs commonly deployed ?
Is Inter-AS MPLS VPNs commonly deployed ? In real-life deployment which Inter-AS MPLS VPN Option is
Read MoreOSPF Prefix Suppression helps company to use 200 routers
OSPF Prefix Suppression helps to company to use 200 routers in their network without any problem. Yo
Read MoreWhat is KISS Principle ? Keep it Simple and Stupid ?
What is KISS Principle ? Okay it stands for Keep it Simple and Stupid but what does really it mean i
Read MoreFlat OSPF network is not a problem ! But
Flat OSPF network, or single area OSPF networks are real. In fact most of the OSPF network today dep
Read MoreFast Convergence and the Fast Reroute – Definitions/Design Considerations in IP and MPLS
Fast Convergence and the Fast Reroute Network reliability is an important design aspectÂ
Read MoreOSPF Best Practices
OSPF Best Practices Understanding and using best practices is very important th
Read MorePacket loss with Fast Reroute
Packet loss with Fast Reroute Do we still lose packet with fast reroute? One of my students asked
Read MoreOSPF to IS-IS Migration
There are many reasons of OSPF to IS-IS migration, specifically for the Service Provider networks. S
Read MoreOSPF Multi-Area Adjacency | OSPF Area Placement | RFC 5185
OSPFv2 by default setup only one adjacency over a single link. But this can be an issue some time an
Read MoreIS-IS Design considerations on MPLS backbone
IS-IS Design considerations on MPLS backbone Using IS-IS with MPLS require some important design co
Read MoreIS-IS level 1, IS-IS Routing Protocol Levels
What is IS-IS Level 1 ? Why IS-IS level 1 is used ? What are the IS-IS levels ? What is the correspo
Read MoreEIGRP RFC 7868
Finally, informational EIGRP RFC 7868 has been published.It is not anymore Cisco's EIGRP, it is an o
Read MoreWhy Are Dynamic Routing Protocols Used?
Why are dynamic routing protocols used is usually asked by newbies in the networking field, especia
Read MoreEIGRP Feasible Successor
One of the advantages of EIGRP Feasible Successor is that it speeds up the EIGRP. In fact, if there
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