The Journey of a Network Engineer:

router


October 10, 2011  2:36 AM

How to change the Administrative Distance when redistributing?



Posted by: Sulaiman Syed
AD, administrative, CCIE, change, Cisco, distance, EIGRP, how, redistributing, RIP, route, router, switch, to

So, lets talk about how can we change the cost while distribution between routing protocols. Distribution between two routing domains should be done very carfully. It is easy when the there is single distribution router between the two domains. Things get slightly...

October 7, 2011  1:39 AM

How to change metrics in RIP?



Posted by: Sulaiman Syed
CCIE, Cisco, configuration, cost, EIGRP, hops, how, metric, offlist, OSFP, RIP, router, routing

RIP is really undesired protocol. It has a slow convergence by default, and generates lot of traffic. On the positive side, it is one of the easiest routing protocols to configure. One network statement command, and you are done. Generally, using RIP is not recommended. There are better...


July 20, 2011  8:20 AM

Introducing Cisco Catalyst 6500 Series Supervisor Engine 2T



Posted by: Sulaiman Syed
6500, Catalyst, Cisco, Engine, MSFC5, multilayer, PFC4, router, S2T, SUP720, Supervisor, switch

Cisco very recently introduced the new SUP engine for the much trusted Catalyst 6500, the Supervisor Engine 2T (S2T). It is much welcomed sup...


July 20, 2011  7:13 AM

Cisco Catalyst Sup720 V S2T



Posted by: Sulaiman Syed
6500, capacity, Catalyst, Cisco, core, distribution, Nexus, router, S2T, SUP720, switch, vs

Cisco has recently introduced the S2T. We ran a comparison from the prospective of backplane capacity...


July 3, 2011  2:39 AM

How to manipulate BGP Routes



Posted by: Sulaiman Syed
Cisco, distribute-list, filter-list, Internet, PA, prefix-list, route, route-map, router

Border Gateway Protocol (BGP) is the back bone protocol that connects the internet. It falls under the External Gateway Protocols (EGP), interestingly it is the only routing protocols used in the external networks. BGP is a robust protocol that can handle 100k routes, which are increasing....


May 22, 2011  5:07 AM

How to troubleshoot EIGRP?



Posted by: Sulaiman Syed
Cisco, neighbor, operation, process, protocol, router, switch, topology, troubleshoot

In the previous entry I explained how EIGRP is configured. I would like to follow on that, how to check the operation of EIGRP, and the commands...


May 20, 2011  12:01 PM

How to congifure EIGRP?



Posted by: Sulaiman Syed
Cisco, Configure, how, IGRP, neighbor, router, switch

EIGRP is a Cisco proprietary protocol. It is one of the most widely used within enterprises that use Cisco switches/ routers. It stands for Enhanced Interior...


March 23, 2011  3:13 AM

Running Juniper with GNS3



Posted by: Sulaiman Syed
Cisco, configuration, emulate, GNS3, ios, juniper, Olive, router, VMware, Vmware Player

It was rather a very intense Google journey to find out all the details on how to emulate Junos. Since i intend to learn juniper, i needed a platform to work on. after two days of research and work, i managed to a results. There are various things required to make things work. I would list them...


February 23, 2011  5:29 AM

How to design transparent proxy?



Posted by: Sulaiman Syed
Cisco, design, in-line, network, PBR, proxy, router, transparent, WCCP

Almost every organization uses proxy. The benefits of proxy servers are countless. Some of these benefits are mentioned:

  • Add Accounting
  • Add Authorization
  • Reduce the load on the external (wan) link
When the proxy is installed in transparent setup. it...


February 9, 2011  8:16 AM

what is MPLS VPN?



Posted by: Sulaiman Syed
Cisco, how mpls vpn works, MPLS, mpls vpn, network, router, routing, service provider, virtual, virtual routing, vpn

When a service provider connects to sites that belong to one customer that uses private address then SP will advertise those routes within his autonomous systems. This could be handled when he is serving one ogranization. What if the SP is connecting 10 customers each with three sites and all of...


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