Correction: 300msec of course:)
Gard Undheim wrote: > 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