Richard A Steenbergen wrote on Friday, September 09, 2005 11:57 AM:
On Fri, Sep 09, 2005 at 11:44:05AM -0400, Drew Linsalata wrote:
Looks like 26210 is originating the prefixes and Telefonica is
happily
passing them along to the world, at least some portion of which is glad to go along for the ride.
Q. How does the Internet work? A. Spit and glue.
$10 says someone forgot "ip classless".
I'll take that bet. My $10 says they turned on auto-summary.
$20 says this devolves into a discussion about pgp key signed bgp announcements or some other impractical soapbox within less than 10 emails. :)
Actually, my practical solution to this one is max-prefixing your peers. It means you have to watch your peers slow growth, but frankly, you should be watching that anyway.
Now if only they made "no ip clueless".
Or at least correctly set the "evil" bit on appropriate packets.
On Fri, 9 Sep 2005, Israel, David B. wrote:
Richard A Steenbergen wrote on Friday, September 09, 2005 11:57 AM:
On Fri, Sep 09, 2005 at 11:44:05AM -0400, Drew Linsalata wrote:
Looks like 26210 is originating the prefixes and Telefonica is
happily
passing them along to the world, at least some portion of which is glad to go along for the ride.
$10 says someone forgot "ip classless".
I'll take that bet. My $10 says they turned on auto-summary.
Here's what Telefonica is or has been announcing to peers with a _12956_26210_ AS path (note that a bunch of these are currently history entries, so aren't being announced at the moment). It looks like a corresponding classful announcement for every CIDR announcement, plus a few more.
From http://lg.pch.net:
equinix-ashburn>sh ip bgp regex _12956_26210_ BGP table version is 8836678, local router ID is 157.22.13.84 Status codes: s suppressed, d damped, h history, * valid, > best, i - internal, r RIB-failure, S Stale Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path h 12.0.0.0 206.223.115.107 0 12956 26210 ? h 12.144.80.0/24 206.223.115.107 0 12956 26210 i h 12.144.82.0/23 206.223.115.107 0 12956 26210 ? h 12.144.84.0/22 206.223.115.107 0 12956 26210 i h 64.0.0.0 206.223.115.107 0 12956 26210 ? h 65.0.0.0 206.223.115.107 0 12956 26210 ? h 65.173.56.0/21 206.223.115.107 0 12956 26210 i h 200.11.68.0 206.223.115.107 0 12956 26210 ? h 200.58.64.0/21 206.223.115.107 0 12956 26210 ? *> 200.58.160.0/23 206.223.115.107 0 12956 26210 25620 i *> 200.58.162.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.163.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.164.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.165.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.166.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.167.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.168.0 206.223.115.107 0 12956 26210 25620 i Network Next Hop Metric LocPrf Weight Path *> 200.58.169.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.170.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.171.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.172.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.173.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.174.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.175.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.176.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.177.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.178.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.179.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.180.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.181.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.182.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.183.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.184.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.185.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.186.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.187.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.188.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.189.0 206.223.115.107 0 12956 26210 25620 i *> 200.58.190.0 206.223.115.107 0 12956 26210 25620 i Network Next Hop Metric LocPrf Weight Path *> 200.58.191.0 206.223.115.107 0 12956 26210 25620 i *> 200.75.160.0/20 206.223.115.107 0 12956 26210 22541 22541 i *> 200.85.128.0 206.223.115.107 0 12956 26210 27714 i *> 200.85.128.0/23 206.223.115.107 0 12956 26210 ? *> 200.85.129.0 206.223.115.107 0 12956 26210 27714 i *> 200.85.130.0 206.223.115.107 0 12956 26210 27714 i *> 200.85.131.0 206.223.115.107 0 12956 26210 27714 i *> 200.85.132.0 206.223.115.107 0 12956 26210 27714 i *> 200.85.133.0 206.223.115.107 0 12956 26210 27714 i *> 200.85.134.0 206.223.115.107 0 12956 26210 ? *> 200.85.136.0 206.223.115.107 0 12956 26210 ? *> 200.85.137.0 206.223.115.107 0 12956 26210 ? *> 200.85.143.0 206.223.115.107 0 12956 26210 27714 i *> 200.105.128.0 206.223.115.107 0 12956 26210 i *> 200.105.129.0 206.223.115.107 0 12956 26210 ? *> 200.105.130.0 206.223.115.107 0 12956 26210 ? *> 200.105.131.0 206.223.115.107 0 12956 26210 ? *> 200.105.132.0 206.223.115.107 0 12956 26210 ? *> 200.105.133.0 206.223.115.107 0 12956 26210 ? *> 200.105.134.0 206.223.115.107 0 12956 26210 ? *> 200.105.135.0 206.223.115.107 0 12956 26210 ? Network Next Hop Metric LocPrf Weight Path h 200.105.136.0 206.223.115.107 0 12956 26210 ? h 200.105.137.0 206.223.115.107 0 12956 26210 ? h 200.105.138.0 206.223.115.107 0 12956 26210 ? h 200.105.139.0 206.223.115.107 0 12956 26210 ? h 200.105.140.0 206.223.115.107 0 12956 26210 ? h 200.105.141.0 206.223.115.107 0 12956 26210 ? h 200.105.142.0 206.223.115.107 0 12956 26210 ? h 200.105.143.0 206.223.115.107 0 12956 26210 ? h 200.105.144.0/20 206.223.115.107 0 12956 26210 i *> 200.105.160.0 206.223.115.107 0 12956 26210 ? *> 200.105.192.0 206.223.115.107 0 12956 26210 ? *> 200.105.193.0 206.223.115.107 0 12956 26210 ? *> 200.105.194.0 206.223.115.107 0 12956 26210 ? *> 200.105.195.0 206.223.115.107 0 12956 26210 ? *> 200.105.196.0 206.223.115.107 0 12956 26210 ? *> 200.105.197.0 206.223.115.107 0 12956 26210 ? *> 200.105.198.0 206.223.115.107 0 12956 26210 ? *> 200.105.199.0 206.223.115.107 0 12956 26210 ? *> 200.105.200.0 206.223.115.107 0 12956 26210 ? *> 200.105.201.0 206.223.115.107 0 12956 26210 ? *> 200.105.218.0 206.223.115.107 0 12956 26210 ? *> 200.105.219.0 206.223.115.107 0 12956 26210 ? Network Next Hop Metric LocPrf Weight Path *> 200.105.220.0 206.223.115.107 0 12956 26210 ? *> 200.105.221.0 206.223.115.107 0 12956 26210 ? *> 200.105.222.0 206.223.115.107 0 12956 26210 ? *> 200.105.223.0 206.223.115.107 0 12956 26210 ? *> 200.112.192.0/20 206.223.115.107 0 12956 26210 27722 27722 i *> 200.119.192.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.193.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.194.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.195.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.196.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.197.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.198.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.199.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.200.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.201.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.202.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.203.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.204.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.205.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.206.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.207.0 206.223.115.107 0 12956 26210 25620 i Network Next Hop Metric LocPrf Weight Path *> 200.119.208.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.209.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.210.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.211.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.212.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.213.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.214.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.215.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.216.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.217.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.218.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.219.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.220.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.221.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.222.0 206.223.115.107 0 12956 26210 25620 i *> 200.119.223.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.64.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.65.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.66.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.67.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.68.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.69.0 206.223.115.107 0 12956 26210 25620 i Network Next Hop Metric LocPrf Weight Path *> 201.222.70.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.71.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.72.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.73.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.74.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.75.0 206.223.115.107 0 12956 26210 25620 i *> 201.222.77.0 206.223.115.107 0 12956 26210 25620 i h 205.241.34.0 206.223.115.107 0 12956 26210 ? h 205.241.35.0 206.223.115.107 0 12956 26210 ? h 205.241.36.0 206.223.115.107 0 12956 26210 ? h 205.241.37.0 206.223.115.107 0 12956 26210 ? h 205.241.38.0 206.223.115.107 0 12956 26210 ? h 205.241.39.0 206.223.115.107 0 12956 26210 ? h 206.107.148.0 206.223.115.107 0 12956 26210 ? h 206.107.149.0 206.223.115.107 0 12956 26210 ? h 206.107.150.0 206.223.115.107 0 12956 26210 ? h 206.107.151.0 206.223.115.107 0 12956 26210 ? h 208.1.190.0 206.223.115.107 0 12956 26210 ? -Steve
"Israel, David B." <david.b.israel@xo.com> writes:
Actually, my practical solution to this one is max-prefixing your peers. It means you have to watch your peers slow growth, but frankly, you should be watching that anyway.
Max-prefix is part of the battle. A corollary "max-aggregate" where for instance one could say "shut the connection down if these guys try to announce more than a /14 worth of space total to me - I don't believe it" would be convenient. None of this works of course if people don't turn it on though. ---rob
participants (3)
-
Israel, David B. -
Robert E.Seastrom -
Steve Gibbard