RE: L3VPN VPNv4 NLRI - Route Reflector Scaling
This is made easier by the cisco allowing regular expressions in the extcommunity list, an RT scoping policy can be implemented as a result. David Freedman Group Network Engineering Claranet Limited http://www.clara.net -Original Message- From: Mark Tinka [mailto:[EMAIL PROTECTED] Sent: Fri 4/4/2008 11:07 To: David Freedman Cc: nanog@merit.edu Subject: Re: L3VPN VPNv4 NLRI - Route Reflector Scaling On Friday 04 April 2008, David Freedman wrote: The downside to this of course is that the RRs spend time discarding prefixes when update time comes around for the PEs. And also, of course, the fact that you have to maintain the Extended communities on the route reflector(s). Cheers, Mark.
Re: L3VPN VPNv4 NLRI - Route Reflector Scaling
On Friday 04 April 2008, David Freedman wrote: The downside to this of course is that the RRs spend time discarding prefixes when update time comes around for the PEs. And also, of course, the fact that you have to maintain the Extended communities on the route reflector(s). Cheers, Mark. signature.asc Description: This is a digitally signed message part.
Re: L3VPN VPNv4 NLRI - Route Reflector Scaling
And apologies for the html of the previous two posts :)
RE: L3VPN VPNv4 NLRI - Route Reflector Scaling
On Wednesday 02 April 2008, David Freedman wrote: We have dedicated VPNv4 route reflectors, they work well for us. An inevitable end as the number of routes grows. In our case we use the cisco rr-group directive (http://www.cisco.com/en/US/docs/ios/12_3/iproute/command/reference/ip2_a1g.html#wp1040902) to limit RR clusters to the prefixes we actually want them to reflect, filtered by extcommunity. The downside to this of course is that the RRs spend time discarding prefixes when update time comes around for the PEs. Dave.
Re: L3VPN VPNv4 NLRI - Route Reflector Scaling
On Wednesday 02 April 2008, David Freedman wrote: We have dedicated VPNv4 route reflectors, they work well for us. An inevitable end as the number of routes grows. That said, RFC 4684 would appear to be the ultimate solution, although vendor support is not rife at the moment. Cheers, Mark. signature.asc Description: This is a digitally signed message part.
Re: L3VPN VPNv4 NLRI - Route Reflector Scaling
One other option we theorize would be to have dedicated VPNv4 route reflectors (route reflectors that do not reflect other address families, e.g., IPv4, IPv6, e.t.c.). We have dedicated VPNv4 route reflectors, they work well for us. Dave.
