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Masood Ahmad Shah

This blog contains a summary of my research readings and thoughts in system and network engineering. View Masood Shah's profile on LinkedIn

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Juniper pathfinder
When buying or upgrading a Juniper device, there are always questions that come to mind ( Is “this” feature supported on “that” platform, and if so “which” version did it come out? ) As of July 1st, Juniper have released the Pathfinder tool: http://pathfinder.juniper.net Read More...

Posted Friday, July 13, 2012 2:47 AM by jahil | 0 Comments

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Configuring the Juniper Media, IP & MPLS MTU
Here I have some information on MTU Juniper, I had investigated it for a customer while ago. The actual frames transmitted also contain cyclic redundancy check (CRC) bits, which are not part of the media MTU. For example, the media MTU for a Gigabit Ethernet Read More...

Posted Tuesday, May 05, 2009 1:08 PM by jahil | 2 Comments

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MPLS-in-GRE & MPLS-in-IP
JUNOS now support MPLS-in-GRE & MPLS-in-IP. You guys can now encapsulate the MPLS label stack for a packet with an IP header, making it possible to tunnel MPLS over networks that do not have MPLS enabled on their core routers. The JUNOS software supports Read More...

Posted Saturday, March 07, 2009 2:22 PM by jahil | 2 Comments

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JUNOS VPLS on FE Interfaces
TThere are numerous misconception about VPLS support on Juniper Fast Ethernet PICs. Here is a little quick workaround running VPLS on Juniper's "PE-4FE-TX and PB-4FE-TX" PICs. This setup requires MPLS LSPs between PEs... Interface Configuration: jahil@jahil-re0 Read More...

Posted Wednesday, February 04, 2009 1:20 AM by jahil | 0 Comments

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A small love story about Routerboard
RouterBoard makes a complete line of devices that pound-for-pound beat Cisco/Juniper/Nortel/Extreme on features at a much lower price-point. I've been using Cisco/Juniper/Nortel devices for years now and after some seriously productivity killing bugs Read More...

Posted Thursday, January 29, 2009 3:13 AM by jahil | 2 Comments

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BGP default route advertisement
In most design scenarios, you’d like to advertise the BGP default route to EBGP neighbors without having a BGP default route in your own BGP table. For example, an ISP might decide to advertise only the BGP default route and local BGP networks to customers Read More...

Posted Thursday, January 15, 2009 11:09 PM by jahil | 0 Comments

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Rate limit OR traffic shaping
Rate limit or shaping is always confusing; as to which one to use. The goal of traffic shaping is hard-limiting of sending rate, while the purpose of rate-limiting is usually admission control based on burst sizes. Traffic shaping hard-forces “fixed” Read More...

Posted Thursday, January 01, 2009 4:42 PM by jahil | 0 Comments

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L2VPN Taxonomy
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Posted Wednesday, September 17, 2008 9:22 PM by jahil | 0 Comments

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