I agree with Hemant. Speaking as another router vendor, we use CIDR for Ipv6. Routes on all 128-bits are not an issue.
/Olivier > -----Original Message----- > From: ipv6-boun...@ietf.org [mailto:ipv6-boun...@ietf.org] On Behalf Of > Hemant Singh (shemant) > Sent: Monday, November 08, 2010 10:24 AM > To: Ben Jencks; Thomas Narten > Cc: ipv6@ietf.org > Subject: RE: draft-ietf-6man-prefixlen-p2p-00.txt > > Oh, I am still on US EST time zone and waking up in the middle of the > night in Beijing. Please see in line below. > > -----Original Message----- > From: ipv6-boun...@ietf.org [mailto:ipv6-boun...@ietf.org] On Behalf Of > Ben Jencks > Sent: Monday, November 08, 2010 5:56 AM > To: Thomas Narten > Cc: ipv6@ietf.org > Subject: Re: draft-ietf-6man-prefixlen-p2p-00.txt > > > >I'd like to hear from a router vendor on the impact of this on TCAM > >design. I'm under the (possibly mistaken) impression that frequently > >only the first 64 bits are allocated space in the TCAM. If you need to > >route on all 128 bits in hardware, it could halve the number of routes > >you can carry. > > >This has probably already been addressed, but I couldn't find it in > >the archives. > > Speaking as a router vendor, the possibly-mistaken-impression is so not > the way IPv6 high-end routers silicon works when the router uses a > TCAM. Sorry, I cannot provide any more details on our router > implementation, but I can assure this audience that Thomas' belief is > correct that IPv6 routing continues to be based on CIDR. > > Hemant > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
