RE: 12/8 problems?

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. :slight_smile:

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.

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