[j-nsp] maximum BGP multipath ECMP supported on M7i or M10i routers?

[Yucong Sun]

Thanks, that's what I mean by consistent hashing :-D  But just to clarify,
were you talking about juniper routing device that has this feature or are
you referring to security device?


On Tue, Apr 1, 2014 at 4:26 AM, Vitkovský Adam <adam.vitkovsky at swan.sk>wrote:

> > 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:juniper-nsp-bounces at puck.nether.net] On Behalf
> > Of Yucong Sun
> > Sent: Tuesday, April 01, 2014 10:08 AM
> > To: krasi at smartcom.bg
> > Cc: juniper-nsp at puck.nether.net
> > 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
> > <krasi at smartcom.bg>
> > 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 <sunyucong at gmail.com> 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 <sunyucong at gmail.com>
> > 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!
> > >
> >
> >
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