About the Author

author photo

Joe Harris, CCIE No. 6200 (R&S, Security & SP) is a Systems Engineer with Cisco Systems® specializing in Security. In addition to authoring Cisco Network Security Little Black Book, Joe has also been a technical reviewer for several Cisco Press publications and written articles, white papers, and presentations on various security technologies. He also assists various Certification Partners by beta testing their newest CCIE certification workbooks and has been recognized by Cisco as an SE Wall of Fame award winner.

See All Posts by This Author

HSRP Groups on 7600 Series

August 28th, 2008 • Related • Filed Under

I received a question that I thought would benefit you guys so I have decided to pass the question and answer along.

Question:
Joe, I would like to understand the limitations regarding HSRP groups on the 7600 series, specifically the following:

  1. Is there support for HSRPv2 on the 7600 and what are the limitations (like the # of groups per interface and total chassis)?
  2. Also I assume that for HSRPv1 you only support 256 groups on each interface with no limit on the total chassis right?
  3. Does the SUP/RSP used make a difference?

Answer:
Yes, we support HSRPv2 with 4096 theoretic groups per interface and no limit for whole chassis. For HSRPv1 there is not limit in theory for the total number of groups in the chassis. In fact, the number of groups will be limited by CPU resources. I know it has been tested up to 1000 groups with 1/3 second timers in SUP720. As far as the SUP/RSP is concerned, If you use a Supervisor it should make no a difference between a normal or XL version. The RSP720 should perform better as it doubles CPU power but we (Cisco) has no performance tests for it on the RSP720 that I’m aware of to date….I guess that will give me something to do in the coming weeks :-)

Post a Response