[41157] in North American Network Operators' Group
Re: What is the limit? (was RE: multi-homing fixes)
daemon@ATHENA.MIT.EDU (Philip Smith)
Thu Aug 30 06:35:49 2001
Message-Id: <5.1.0.14.2.20010830202946.06716008@localhost>
Date: Thu, 30 Aug 2001 20:32:27 +1000
To: nanog@merit.edu
From: Philip Smith <pfs@cisco.com>
In-Reply-To: <Pine.LNX.4.21.0108300551320.22111-100000@Overkill.EnterZon
e.Net>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format=flowed
Errors-To: owner-nanog-outgoing@merit.edu
At 06:01 30/08/2001 -0400, John Fraizer wrote:
>Speaking of filtering:
>
>AS64602 at Mae-West from Digex (AS2548) ASPATH=2548 64602 64602 64602
>64602 64602 64602 IGP
>
>AS65515 at Mae-West from Verio (AS2914) ASPATH=2914 10910 10910 10910
>10910 10910 10910 11908 10530 5593 65515 IGP
>
>AS65515 at AADS from Verio (AS2914) ASPATH=2914 10910 10910 10910 10910
>10910 10910 11908 10530 5593 65515 IGP
>
>AS65515 at Paix from Verio (AS2914) ASPATH=2914 10910 10910 10910 10910
>10910 10910 11908 10530 5593 65515 IGP
>
>Which part of (64512 - 65535 != valid ASN) do providers not understand?
>
>Filter! Filter! Filter!
And your favourite router vendors have a useful command/knob to remove
private ASes from announcements too. It's not hard to put that on all eBGP
peerings...
philip
--
