Subnet Toolsand other network tips

BGP

Looking glass

This is the list I use of looking glass servers with web interfaces. It makes internet routing diagnostics a lot easier. http://www.bgp4.as/looking-glasses There are also a couple of looking glass routers you can telnet in to such as this Global Crossing (Level 3) one. telnet route-server.gblx.net

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AS Path Prepend in a multipath network

In this scenario we have a dual connected site and are using BGP multipath to load balance the traffic over the two connections. This is very dangerous to do when beancounters are around because they often want you to use both connections to 100% (or at least over 50%) so you end up without the […]

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