The Journey of a Network Engineer:

route


August 27, 2013  6:05 AM

How to configure Cisco DMVPN? Part-2



Posted by: Sulaiman Syed
Cisco, Configure, DMVPN, route, router, routing

In the previous entry, we saw how to configure a basic DMVPN network. Let's see the effect of adding the extra multicast mapping on our network table, and EIGRP adjuncies.

August 18, 2013  12:15 AM

How to configure Cisco DMVPN? Part-1



Posted by: Sulaiman Syed
ARP, Cisco, Configure, DMVPN, how, mGRE, route, Tunnel, vpn

Configuring Site-to-Site VPN although straight forward, but it fails to scale. just imagine how many tunnels should be created to connected to 10 sites, specially if...


February 20, 2013  5:30 AM

How to configure On-Demand Routing in Cisco routers?



Posted by: Sulaiman Syed
Cisco, network, ODR, OSFP, route, router

On-Demand Routing (ODR) is one of the few simple routing methods. It is not a protocol by itself as it uses Cisco Discovery Protocol (CDP) to gather and propagate the route information. ODR is designed for Hub-spoke networks, where the spokes are stub networks with nothing connecting them. As...


July 29, 2012  1:44 AM

How to Interconnect OSPF areas? – part 2



Posted by: Sulaiman Syed
Cisco, neighbor, network, OSFP, route, router

In my previous entry, I have mentioned the methods that can be used to interconnect different areas in OSPF. In this entry, I would post another similar network...


July 28, 2012  1:26 AM

How to Interconnect OSPF areas? – part 1



Posted by: Sulaiman Syed
CCIE, Cisco, Configure, network, OSFP, protocol, route, router, routing

While studying for CCIE, i realized that no scenario will be without connecting different OSPF areas. So, what are the rules when having multiple areas in OSPF to have a fully converged network with full route propagation? The rule is one

Every Area is OSPF should be connected to...


July 8, 2012  8:26 AM

how to use Administrative distance?



Posted by: Sulaiman Syed
AD, administrative, advertisement, Aggregation, Cisco, eBGP, MPLS, redistributing, route, router, routing, traceroute

When i started writing the first article, i never thought that it will turn into a three different blogs. Truth to be told, the scenario was such a complicated one. that just changing the AD was not enough to provide the intended routing path.

The scenario is from the...


July 2, 2012  7:58 AM

how to use Administrative distance? – part 3



Posted by: Sulaiman Syed
AD, CCIE, Cisco, EIGRP, iBGP, mpls vpn, route, router

This is the last entry for the series "how to use administrative distance". The interesting part was, why when static routes were distributed into EIGRP, they were shown as Internal?


May 29, 2012  9:16 AM

how to use Administrative distance? – part 2



Posted by: Sulaiman Syed
administrative, CCIE, Cisco, distance, distribution, EIGRP, mpls vpn, route, router, static

In my earlier Blog, i have shown a detailed diagram of the problem/ requirement of the network change. After 5 mins of studying the proposal i came with an easy solution to change the routing behavior. I have made few assumptions and based on it i built my design. These assumptions are correct,...


May 18, 2012  4:24 AM

Different methods to advertise routes into OSPF



Posted by: Sulaiman Syed
advertisement, CCIE, Cisco, redistribute, route, router

Advertising routes into protocols is one of the interesting topics. Most of big enterprise networks will have different routing domains. Thus dealing with these routes become an essential topic in CCIE exams. Although the topic stats into OSPF, but these methods can generally be applied into any...


November 23, 2011  10:02 AM

How to configure route dampening in BGP



Posted by: Sulaiman Syed
CCIE, dampening, flap, half-life, how, map, route, router, to

Flapping routes are bad news in BGP. flapping routes are the routes that go up and down in very short time. they are bad news cause they require changes in routing table. routing table that consists of 100 thousand routes cause high load on router. a flapping route will: 1- change the table by...


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