NRTM proposal
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Andrei Robachevsky
andrei at ripe.net
Mon Mar 11 17:00:01 CET 2002
Hi Ping, Lu, Ping wrote: > Since we are talking about NRTM, I would like to raise a question on how to > filter out > some objects for privacy or other reasons. > > 1. There are two different cases: NRTM ingress( client mirroring from > server) and > NRTM egress ( server mirroring into client ) > > 2. For NRTM egress: Usually want to filter out PERSON object for privacy. > > 3. For NRTM ingress: Sometime other RR may have polluted route objects or > other non-standard RPSL extension. > > 4. Other than modified the server we can put a wrapper to filter out > unwanted object then send a dummy object to the server. > > 5. The problem is how do you specify action ? Because you can not ADD or DEL > twice the same dummy object. So the wrapper have to TRACK the action > sequence. This is problematic and sometimes won't work at all. > In fact, with both RIPEv3 and iRRd you can ADD twice (or rather many times in a row), as this is considered as an update. So in our setup we use the approach you decribed below, but with "ADD" action. We put a mirror reflector in front of all mirrored sources, and every time it sees a non-compliant object mirror reflector substitutes it with "ADD + dummy object" without losing track of serials. > 6. The solution I am proposed is: a DUMMY action for both NRTM ingress and > egress. Whenever there is a need to filter some objects, the server will > send a dummy object with DUMMY action. Then the NRTM client will accept the > DUMMY/dummy stream and increase the serial number without any real action. > > Any comment ? > > > Ping Lu > Cable & Wireless USA > Network Tools and Analysis Group > W: +1-703-292-2359 > E: plu at cw.net > > Regards, Andrei Robachevsky RIPE NCC
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