Local Loop

IP sub-netting is one of the first things one learns about network administration. You have a /22, you want /24′s, 2 bits give you 4 sub-nets. Or you want one /24, so you break the /22 into two /24′s and a /23. Not rocket science. It’s the kind of thing you can do in your [...]

The /16 route being announced by First National Bank’s new IPConnect ADSL-based consumer ISP, FNBCONNECT (AS37028) disappeared from the Internet Solutions (AS3741) local routing table somewhere between last week Wednesday (2009/08/12) and Friday (2009/08/14). It seems their transit via First National Bank’s own network went down. FNB, in turn, buys transit via IS and MTN [...]

Spotted on local-route-server.is.co.za today: * 41.203.16.0/22 168.209.255.8 0 3741 2905 65419 i * 41.203.20.0/23 168.209.255.8 0 3741 2905 65419 i * 41.203.22.0/23 168.209.255.8 0 3741 2905 65419 i * 41.203.24.0/21 168.209.255.8 0 3741 2905 65419 i * 41.204.216.0/22 168.209.255.8 0 3741 2905 65419 i * 41.204.220.0/23 168.209.255.8 0 3741 2905 65419 i * 196.22.132.0/22 168.209.255.8 [...]

I’ve finally gotten around to writing the scripts to update my South African Autonomous Systems list. The table will now be updated using routes from the IS route server on a regular basis. I’ve made the following changes: As per Joe’s request, it is now sorted first by the equivalent number of class C networks [...]

Route servers are BGP routers, typically operated by a providers who want to give people a view of what the Internet’s routes “look like” from their network’s perspective. They are queried via a telnet command line interface or via a web interface (sometimes called a looking glass). Route servers are also used at Internet peering [...]