Hi Thanks for the answers. I have tested a bit with up to 75 vrrp-groups and a interval of 100msec in the lab now, and the boxes is not able to to the failover in the expected time (300-400msec). These tests were done with two M5's, the actual network will use M120 and M320. I guess I'll set the interval to 300 seconds, since this is also what is recommended in the 8.5 release notes.
Regards, Gard Jonathan Brashear wrote: > Seconded. Depending on what type of Juniper you're using, VRRP issues > can heavily tax a router and cause it to drop bgp with other routers if > enough problems pop up. Dropping the fast-interval time will only > hasten these problems. It's your call, but imo it's a > high-risk/low-reward situation tuning the failover to the lowest time > possible. > > > Network Engineer >> 214-981-1954 (office) >> 214-642-4075 (cell) >> [EMAIL PROTECTED] > http://www.speakeasy.net > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of alaerte vidali > Sent: Sunday, January 13, 2008 4:04 PM > To: juniper-nsp@puck.nether.net > Subject: Re: [j-nsp] VRRP tuning and scaling > > Hi, > > I believe you will face scalability issues, even though I can only > affirm > this 100% in Cisco. > > I suggest you consider not only normal periods of the network. In this > case > probably it is ok. > But add to this all process you have, plus things like instabilities in > network (STP issues, link flapping...). > Then everything together can result in routers losing track of VRRP > neighbor > packets due to the large number. > > Br, > Alaerte > >> >> >> Today's Topics: >> >> 1. VRRP tuning and scaling (Gard Undheim) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Sat, 12 Jan 2008 18:15:58 +0100 >> From: Gard Undheim <[EMAIL PROTECTED]> >> Subject: [j-nsp] VRRP tuning and scaling >> To: juniper-nsp@puck.nether.net >> Message-ID: <[EMAIL PROTECTED]> >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed >> >> >> Hi >> >> I am currently tuning VRRP to speed up the failover time. I have set > the >> fast-interval to 100msec, which is a minimum. Does anyone know how > these >> settings scale with different numbers of vrrp groups? The customer >> currently has 20 vrrp groups, but would it also work fine with as much >> as 255 groups and fast interval of 100msec? >> >> >> Thanks for any help! >> >> Best Regards, >> Gard >> >> >> > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp -- Best Regards, Gard Undheim ----------------------------------------- Systems Engineer, Network Solutions IPnett AS ----------------------------------------- Phone: +47 67 20 10 10 (Direct -63) Fax: +47 67 20 10 11 Mobile: +47 97 72 86 71 Email: [EMAIL PROTECTED] ========================================= _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
