 IgnitePremium,VIP
join:2004-03-18
UK | reply to patcat88
Re: peering Well I guess in the US consumer ISPs don't have to peer with you, here and in Europe they do tend to have fairly extensive peering matrices. The idea of a reasonable size cable company using a single upstream provider is utterly insane.
No-one exchange traffic through exchange's ASNs - they connect directly over switching fabrics not at layer 3 so the IX's ASN isn't involved. I'm aware T1s are closed and don't publically peer, however I'm not talking about that small amount of T1s I'm talking about everyone else. Giganews I would imagine have a good reason for having 40Gbps (more now) of bandwidth at AmsIX. Even at a few dollars a Mbps/month that's a not inconsiderable amount of money.
I don't understand the tier 1 focussed mindset, one peers as much as possible via IXs, where economical using dark fibre to extend reach to IXs, and then uses tier 1s to hoover up remaining prefixes. I don't understand any ISP relying solely on transit.
Every provider I have worked for peered as widely as possible, only turning down peering where there was no business case.
Here's the peering for 2 ISPs I have worked for. I am astounded that Adelphia would rely on 1 provider.
»www.db.ripe.net/whois?form_type=···t=Search
»www.db.ripe.net/whois?form_type=···t=Search |
patcat88
join:2002-04-05
Jamaica, NY
kudos:1 | This is my TWC ASN. »fixedorbit.com/AS/12/AS12271.htm
Notice Level 3 is the only upstream, other than the Adelphia ASN.
Here is that Adelphia ASN »fixedorbit.com/AS/7/AS7843.htm , it peering looks normal and diverse.
Here is Verizon Wireless, even though it looks like alot of upstreams, tracert shows that not all of the links are used, it will pick Level 3 over XO, even when XO has a route to the destination, there were less upstreams only 3 years ago (last I checked).
»fixedorbit.com/AS/6/AS6167.htm |
