Redistribution of Cooperative Filtering Information

draft-py-idr-redisfilter-01.txt

Michel Py, L3TJeroen Massar, SixXS

Rob Thomas, Team CymruWilliam Leibzon, Elan Networks

IETF-58 Minneapolis - Thursday November 13,2003

draft-py-idr-redisfilter-01.txtIDR WG

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Goals of this presentation:

• Clarify the objectives.

• Acquire a feeling of the WG’s thoughts about the concept.

• Answer questions about the mechanism.

• The draft is exploratory and possibly too detailed; we know it, we welcome the WG’s feedback on what needs to be removed / rewritten.

IETF-58 Minneapolis - Thursday November 13,2003

draft-py-idr-redisfilter-01.txtIDR WG

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What this draft is not:• An attempt to standardize bogon filtering.

What this draft is:• A mechanism to distribute filtering information.

Bogon filtering is only one example of filtering information. The objective is to standardize the mechanism.

• Idea: re-use ORF mechanisms. The ORF specifications are not modified; what is required is a syntax enhancement that is mostly a matter of implementation.

IETF-58 Minneapolis - Thursday November 13,2003

draft-py-idr-redisfilter-01.txtIDR WG

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In complement of:

router BGP 65001

neighbor bogonserver remote-as 65000

neighbor bogonserver capability orf prefix-list send

We also want the capability to do this:

router BGP 65001

neighbor bogonserver remote-as 65000

neighbor bogonserver capability orf prefix-list send THEIRBOGONS

Which is: naming the filtering object received from the peer

IETF-58 Minneapolis - Thursday November 13,2003

draft-py-idr-redisfilter-01.txtIDR WG

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• The "THEIRBOGONS" object is the ORF information received from the peer.

• The reason we want to name it is because we want to reuse the "THEIRBOGONS" object in other parts of the router's configuration (for other peers).

• The object received from the peer may or may not be a prefix-list; it can be an as-path or any future ORF object.

IETF-58 Minneapolis - Thursday November 13,2003

draft-py-idr-redisfilter-01.txtIDR WG

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Open mike:

Questions ?

Suggestions ?

Issues ?• Interactions between ORF and iBGP; are there any

issues with full meshes, route reflectors and confederations?

• If the ORF object received from the peer is named, should the object not be applied automatically to the peer it was received from?

draft-py-idr-redisfilter-01.txtIDR WG

Thank you for you attention

Michel Py, L3T

michel@arneill-py.sacramento.ca.us

Jeroen Massar, SixXS

jeroen@unfix.org

Rob Thomas, Team Cymru

robt@cymru.com

William Leibzon, Elan Networks

william@elan.net

IETF-58 Minneapolis - Thursday November 13,2003 7