The MPLS-OPS Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] Re: VRFs on ASBRs with inter-AS VPNs[sic]
I am saying that any filtering on ASBRs is not too good. Creating vrf instances just for the filtering purpose is of course even worse (it populates routes to VRF's RIBs and FIBs) which other then waisting the CPU and RAM is simply useless as they will never be used for forwarding. Alternatively I am proposing to filter the routes on a vpnv4 route reflectors feeding the ASBRs. Rgs, R. > Krzysztof Szarkowicz wrote: > > ----- Original Message ----- > From: "Robert Raszuk" <raszuk@cisco.com> > To: "Roumen Doukov" <rdoukov@orchestream.com> > Sent: Wednesday, March 06, 2002 4:01 PM > Subject: Re: VRFs on ASBRs with inter-AS VPNs[sic] > > (...) > > > > The dummy vrfs Morgan has noticed on ASBR or vpnv4 RR is nothing else > > then screwed examples and confusion to customers. We never required them > > !!! So just forget about it and go on to look for better samples of > > configuration :). > > > (...) > > How to control the amount of vpnv4 routes on Inter-AS ASBR -> > > > > (the worst you can do is to play with dummy vrfs !!!) > > > > Recommendations: > > > > A) Have a special single bgp community for exportable to inter-as peer > > vpnv4 routes - you set the filter once on ASBR and done. > > > > B) Do the bgp inbound filetering on receved bgp vpnv4 routes > > > > Could you elaborate more why community filtering is better that RT filtering caused by dummy vrfs on ASBR? > > Krzysztof ------- The MPLS-OPS Mailing List Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
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