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h2oBob's avatar
h2oBob
Aspirant
Mar 14, 2018
Solved

GS724T no gui and presumably high cpu usage

I have at GS724Tv3 that sits in my DMZ.  i.e. connects the firewall to the DMZ machines and the firewall for the inner network.   My issues are: (1) it rarely responds to ping requests (maybe 1 ou...
  • h2oBob's avatar
    h2oBob
    Mar 28, 2018

    I solved this one.

     

    The two firewalls attached to the switch were multicasting state and config data back and forth.  The switch had IGMP snooping enabled from a previous configuration (no longer used).  Oddly, the configured snooping VLAN was not where the multicast traffic was happening.

    When I turned off the multicast sync between the firewalls the GS724T GUI was responsive again.  I then turned off IGMP snooping.  (Probably would have gone a LOT quicker if I had known snooping was a CPU vs. switching HW function.)

     

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