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CX-8360 VSX Mirror Session not working properly

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  • 1.  CX-8360 VSX Mirror Session not working properly

    Posted Feb 14, 2024 03:05 PM

    HI

    I have been working on mirroring traffic to/from the Internet using a mirror session. I have a Route VLAN SVI interface in my VSX stack that handles a routenet towards my Firewall over a MC-LAG. I have both switches doing mirroring of traffic that enters/exits the VLAN SVI L3 interface on the member using:

    mirror session 4
       destination interface 1/1/6
       source vlan 200 both
       source vlan 204 both
       enable

    This used to work just fine, but lately it behaves REALLY oddly as almost no traffic is actually mirrored. My NtopNG always only receives between 5 - 50 mbit traffic regardless if the VLAN interface(s) are routing 50 mbit or 5 Gbit.

    I don't quite know when this issue arose, but a good guess would be when i upgraded the switches to 10.10.1090.

    Is this a known issue with that firmware, or is there some kind of throtteling in effect (I see no dropped packets reported on the destination interface).

    Thanks



  • 2.  RE: CX-8360 VSX Mirror Session not working properly

    Posted Feb 16, 2024 05:07 PM
    Edited by Keyser Feb 16, 2024 05:09 PM

    Anyone? I have tried configuring a mirror of a source interface instead of a source VLAN, and I still only get a fraction of the packets mirrored to the destination.

    The obvious step is to try either reverting to the old FW version, or try a newer one. But this is a big production site, so I'd rather not experiment with that until I have some kind of confirmation on wether a I can expect any success.