The Journey of a Network Engineer:

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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...

November 3, 2011  9:06 AM

How to configure Frame-Relay Switching?



Posted by: Sulaiman Syed
CCIE, Cisco, Configure, exam, how, Lab, map, router, switching

For some reason i thought that i have written an entry for Frame-Relay switching. But the records show none. So here it comes. During studies of CCIE, you might need to configure a Router to act as a frame-relay switch. The configurations are very simple and straight forward. There is the old...


December 16, 2010  4:46 AM

How to manipulate BGP Routes – part 2



Posted by: Sulaiman Syed
CCNP, Cisco, filter-list, map, regex, route, router

As discussed earlier, BPG mainly uses 4 variations to manipulate the routes

  • neighbor distribute-list (standard ACL / extended ACL)
  • neighbor prefix-list
  • neighbor filter-list
  • neighbor route-map...


December 12, 2010  1:19 AM

How to manipulate BGP Routes – part 1



Posted by: Sulaiman Syed
ACL, Cisco, distribute-list, manipulate, map, PA, prefix-list, route, router

After knowing how BGP select the best route for the routing update, using the BGP PAs. The next step would be to manipulate these PAs to give the desired route for NLRI BPG mainly uses 4 variations to manipulate the routes:

  • neighbor distribute-list (standard ACL /...


December 7, 2010  2:59 AM

How to use IP Prefix List?



Posted by: Sulaiman Syed
access, CCNP, Cisco, ip, list, map, network, route, subnet

IP prefix list mostly used with route filtering in IGP (OSPF, IS-IS, EIGRP) and EGP (BGP) protocols. At first sight, the command will look confusing, but it is pretty simple and straight forward. Prefix list can be used with route map, and they would be referred...


October 1, 2010  10:55 AM

Policy Based Routing – Part 2



Posted by: Sulaiman Syed
access, ACL, based, list, map, PBR, policy, route, routing, vlan

In Policy Based Routing - part 1 I have explained why and how we can use PBR in production environment. Today, i shall post...


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