Route Server Filters at IXPs and 4-byte ASNs

Jeffrey Haas jhaas at
Wed Feb 5 03:53:40 UTC 2014

Sent from my iPad

> On Jan 25, 2014, at 1:37 PM, Nick Hilliard <nick at> wrote:
>> On 25/01/2014 15:48, Sebastian Spies wrote:
>> To make things worse: even if the IXPs ASN is 2-byte, I would assume,
>> that RS implementors chose to interpret extended community strings as
>> always being in the format 4-byte:2-byte (see RFC5668).
> some ixp operators (e.g. me) are rather enthusiastic about the idea of a
> modified form of draft-raszuk-wide-bgp-communities getting more traction.
> This would solve this particular problem and many others.

Wide communities is the wrong tool here. You want this:

-- Jeff 

> Nick

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