Switching

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Ask questions and share experiences about EX and QFX portfolios and all switching solutions across your data center, campus, and branch locations.

  • 1.  LACP AE between EX4500 and CAT6500

    Posted 06-15-2011 09:18

    Hi everyone,

     

    I have a LACP Etherchannel on a Cisco Catalyst 6500 to two EX4500 in a virtual chassis.  Cabling is as follows:

    Catalyst 6500 port 5/1 to EX4500 PFC0 port ge-0/0/0

    Catalyst 6500 port 5/2 to EX4500 PFC0 port ge-0/0/1

    Catalyst 6500 port 6/1 to EX4500 PFC1 port ge-1/0/0

    Catalyst 6500 port 6/2 to EX4500 PFC1 port ge-1/0/1

     

    My problem is this:  During failover testing, I rebooted the EX4500 that is the backup RE (PFC1) to see if the AE would stay up.  It did not! I totally lost network connectivity to the entire EX4500 stack, plus the test switch hanging off of it. 

     

    Can you guys please check my configs to see if there's any errors?

    Attachment(s)

    txt
    config.txt   53 KB 1 version


  • 2.  RE: LACP AE between EX4500 and CAT6500

    Posted 06-18-2011 03:44

    Make sure you have:

     

    set chassis redundancy graceful-switchover

     

    configured in your EX4500 VC

     

     



  • 3.  RE: LACP AE between EX4500 and CAT6500
    Best Answer

    Posted 06-18-2011 09:21

    is this a VC of only two switches?  if so, you need to disable split-detection:

     

    set virtual-chassis no-split-detection

     

     

    Will



  • 4.  RE: LACP AE between EX4500 and CAT6500

    Posted 06-21-2011 07:57

    Yes!  set virtual-chassis no-split-detection fixed the problem.  Thanks Will.