> if i started with pre flow 8 ecmp route to a single /32, later removed one > route, would packets all be redistributed over 7 route? this would break in > flight tcp sessions to the vip.
Well flows utilizing the failed path would be spread across the remaining 7 paths. But any particular flow would be using only a single path. So this would break the existing session only if different (per path) security/nat/balancer devices are crossed and states are nod synced among them. adam > -----Original Message----- > From: juniper-nsp [mailto:[email protected]] On Behalf > Of Yucong Sun > Sent: Tuesday, April 01, 2014 10:08 AM > To: [email protected] > Cc: [email protected] > Subject: Re: [j-nsp] maximum BGP multipath ECMP supported on M7i or > M10i routers? > > Thanks, do you have any insight on the consistent hashing? > > if i started with pre flow 8 ecmp route to a single /32, later removed one > route, would packets all be redistributed over 7 route? this would break in > flight tcp sessions to the vip. > > Cheers. > > On Tuesday, April 1, 2014 12:59:50 AM, Krasimir Avramski > <[email protected]> > wrote: > > Hi, > > Two types of balancing supported: per prefix (bgp multipath) and per flow > (ECMP next-hop including bgp multipath) > > Up to 64 ECMP next-hops on MX(DPC, MPC), M120, M10i(Enhanced CFEB), > M320( FPC dependent), T(FPC dependent) for RSVP, LDP, ISIS(ipv4/6), > OSPF(ipv4/6), IBGP(ipv4/6), EBGP(ipv4/6). > > Symmetric load > balancing<http://www.juniper.net/techpubs/en_US/junos12.2/topics/usag > e-guidelines/interfaces-configuring-symmetrical-load-balancing-lag-on-mx- > routers.html>over > 802.3ad link aggregation groups (LAGs) on MX routers with MPCs. > > Best Regards, > > Krasi > > > On 31 March 2014 22:14, Yucong Sun <[email protected]> wrote: > > Do anyone have in-sight on this? > > More over, I guess my quest is to find a device that support > > 1) per flow hashing with as many as ECMP route as possible. (not sure how > many ECMP route is supported) > 2) consistent hashing (existing flow don't break if route is added or > removed) (juniper doc didn't mention this) > > Your opinion/experience on this is greatly appreciated. > > Thanks. > > > On Fri, Mar 28, 2014 at 12:44 PM, Yucong Sun <[email protected]> > wrote: > > > Hi, > > > > Does anyone know how many BGP multipath ECMP routes does a > M7i/M10i > > router support? 16? 32 ? 64? > > > > I found this document : > > > > > > > http://www.juniper.net/techpubs/en_US/junos13.3/topics/reference/confi > guration-statement/maximum-ecmp-edit-chassis.html > > > > which says 16/32/64 but it was only mentioning MPLS routes, not BGP > > multipath routes . I think they might be the samething, but just want > > to be sure. > > > > Thanks! > > > > > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
