With 1st Generation RSPs (haven't checked RSP440 yet), one existing scenario where you would indeed have packet loss in such a "failure" is with oversubscribed cards (A9K-16T/8-B, 8 NPs, 2 10G ports / NP) where in order to achieve 120Gbps you NEED Both RSPs. If you remove one RSP then max achievable b/w per slot is (if I remember correctly) ~92Gbps, so not only instant packet loss but continuous until either you replace the card or drop traffic rate.
For some reason (space/cost ?) in order to be Line Rate you need dual RSP! Themis > -----Original Message----- > From: [email protected] [mailto:cisco-nsp- > [email protected]] On Behalf Of Phil Bedard > Sent: Monday, February 04, 2013 4:18 PM > To: William Jackson; [email protected] > Subject: Re: [c-nsp] ASR9K 0 packet loss > > I've done a bit of testing and it's actually pretty good and I have > seen > zero packet loss, and never greater than 10ms for general IP/MPLS > traffic. > It's a gross simplification but the RSPs work the way the ALU SR > routers > have for years where the fabrics are active/active always receiving > traffic and there is stateful synchronization between RPs for routing > protocols. Back when I did the testing the only issue they had was > with > P2MP RSVP-TE LSPs. > > Phil > > On 2/4/13 6:40 AM, "William Jackson" <[email protected]> > wrote: > > >Hi all > > > >I have seen mentioned on marketing that you can pull out the RP from > an > >in production ASR9K and suffer no packet loss. > >Is this the active RP? Can somebody shed some light on this feature > >please? > > > >Anyone tested this? > > > >Thank you > > > > > >_______________________________________________ > >cisco-nsp mailing list [email protected] > >https://puck.nether.net/mailman/listinfo/cisco-nsp > >archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
