The Journey of a Network Engineer:

router


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 7, 2013  12:19 AM

Configuring Cisco GRE over Site to site VPN



Posted by: Sulaiman Syed
access-list, Cisco, end-to-end, GRE, ios, ipsec, route-map, router, vpn

Previously we have seen how the site to site VPN works. in this example, I would use the topology below to configure Site to Site VPN. Then we would create a GRE Tunnel and secure it with the IPsec tunnel, called GRE over IPSec. thus providing routing protocols the ability to transverse the sites...


February 26, 2013  6:03 AM

Setting up CUCM in VMware workstation – part 2



Posted by: Sulaiman Syed
Cisco, CUCM, GNS3, router, Unity, VMware, voice

In part one we seen how to configure GNS3, to integrate the router with the virtual environment that we would be running in VMware. Next, would be the creation of VMware...


February 25, 2013  2:38 AM

Setting up CUCM in VMware workstation – part 1



Posted by: Sulaiman Syed
Cisco, CUCM, DNS, GNS3, ios, NTP, router, VMware, voice

Although setting up Cisco Unified Communication Manager (CUCM) in VMware is pretty easy and straight forward, I had to struggle to get it up and running. Partially cause i was creating the VM wrongly. In this series, I...


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,...


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