Making sense of Broadband networks – VLAN Model

October 1st, 2013 Wael Osama Posted in Network Design No Comments »

In the previous post we discussed the major considerations of a broadband network architecture. Now I want to discuss each of those points one by one adding some details. I will do this quick and might not be able to provide illustrations or configuration examples all the time due to time limits, so if anything [...]

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Making sense of Broadband networks – Part 1

May 24th, 2013 Wael Osama Posted in Network Design, PPP 2 Comments »

Broadband is a hot topic in the telecommunications industry nowadays; it is becoming the bread and butter for so many service providers and mobile carriers with the big growth and penetration rates in these technologies in the recent years.  ( Check this report about the EOCD countries). Although it is that important, broadband topics probably [...]

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7 Actions to get your network ready for IPv6

December 29th, 2010 Wael Osama Posted in IPv6, Industry News, Network Design 2 Comments »

IPv4 is depleting so fast and time comes to get ready for IPv6. IPv6 may come to real life by 2012/2013. I am making a big claim here and I think I need to back it up with some facts: IPv4 address space is estimated to deplete somewhere in 2011. Check this Report. U.S government [...]

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How to: use IS-IS overload bit

August 30th, 2010 Wael Osama Posted in CISCO HOW-TO, ISIS, Network Design No Comments »

Overload bit is special bit in the IS-IS LSP used to inform the network that the advertising router is not yet ready to forward transit traffic.  The overload bit was first intended for signaling overload or resource shortage on specific router for the rest of the network. You can use the command set-overload-bit intentionally on [...]

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Before you buy a Console Server

August 25th, 2010 Wael Osama Posted in Case Studies, Network Design 1 Comment »

In my post about out of band management networks I mentioned console servers as a mean of providing centralized remote access to network devices collocated in the same site. This post is a complementary post for the previous one if you are planning to use a console server in your out of band management network. [...]

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Out of Band Management Networks – Console Servers

August 18th, 2010 Wael Osama Posted in Case Studies, Network Design 5 Comments »

Building a robust out of band management network is a critical part of any service provider or large enterprise backbone. Although failures may not occur frequently but believe me if you are not prepared when they happen you will know how OoB management is important and critical. Network failures do happen for reasons ranging from [...]

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