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2620 100% CPU Util; Crashing when Source-Port Filter Applied

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  • 1.  2620 100% CPU Util; Crashing when Source-Port Filter Applied

    Posted May 31, 2013 11:48 AM

    I have four brand new 2620's.  All running the same firmware version.  Two of them work perfectly when applying sourece-port filters.  The other two allow me to create the named-list, but the moment I try to apply it to a port, the switch CPU utilization jumps to 100%, the switch stops responding and does not recover.  A hard reset is required each time this happens.  This happens even when there is no traffic on the switch, while connected to the console port.  Is this a bug in the frimware?  Is it a hardware failure?  Has anyone seen this before? 

     

    Below are two configs.  The first one (1Sw1) crashes when ports are added the lists.  The second one (BSw1) works fine as you can see from the config, it has ports added to the lists.

     

    Running configuration:

    ; J9626A Configuration Editor; Created on release #RA.15.10.0010
    ; Ver #03:03.17.2f:38
    hostname "1Sw1"
    filter source-port named-filter "WiFi" drop 3-49,52
    filter source-port named-filter "OFFICE_102" drop 3-44,47-49,51-52
    sntp server priority 1 10.254.1.254
    no stack
    no telnet-server
    no web-management
    web-management ssl
    ip route 0.0.0.0 0.0.0.0 10.254.1.254
    ip routing
    interface 2
    name "LINK_TO_SERVER"
    exit
    interface 49
    name "CASCADE_TO_1Sw2"
    exit
    interface 50
    name "UPLINK_TO_FW"
    exit
    interface 51
    name "LINK_TO_WiFi"
    exit
    interface 52
    name "CASCADE_TO_BSw1"
    exit
    snmp-server community "public" unrestricted
    no snmp-server enable
    vlan 1
    name "MGMT"
    no untagged 3-48
    untagged 1-2,50
    tagged 49,51-52
    ip address 10.254.1.1 255.255.0.0
    exit
    vlan 10
    name "DEFAULT"
    untagged 3-48
    tagged 49,52
    ip address 10.10.0.1 255.255.0.0
    ip helper-address 10.254.1.250
    exit
    vlan 19
    name "GUEST_WiFi"
    tagged 51-52
    ip address 10.19.0.1 255.255.0.0
    ip helper-address 10.254.1.250
    exit
    vlan 20
    name "WIFI"
    tagged 51-52
    ip address 10.20.0.1 255.255.0.0
    ip helper-address 10.254.1.250
    exit
    spanning-tree
    spanning-tree priority 0 force-version rstp-operation
    no dhcp config-file-update
    password manager
    password operator

     

    ------------------------------------------------------------------

     

    ; J9626A Configuration Editor; Created on release #RA.15.10.0010
    ; Ver #03:03.17.2f:38
    hostname "BSw1"
    filter source-port named-filter "WiFi" drop 1-49
    filter source-port named-filter "OFFICE_1" drop 1-38,43-49,51
    filter source-port named-filter "OFFICE_2" drop 1-42,47-49,51
    filter source-port 51 named-filter "WiFi"
    filter source-port 39-42 named-filter "OFFICE_1"
    filter source-port 43-46 named-filter "OFFICE_2"
    no stack
    no telnet-server
    no web-management
    web-management ssl
    ip default-gateway 10.254.1.1
    interface 49
    name "CASCADE_TO_BSw2"
    exit
    interface 50
    name "UPLINK_TO_1Sw1"
    exit
    interface 51
    name "LINK_TO_WiFi"
    exit
    snmp-server community "public" unrestricted
    no snmp-server enable
    vlan 1
    name "MGMNT"
    no untagged 1-48
    tagged 49-52
    ip address 10.254.0.1 255.255.0.0
    exit
    vlan 10
    name "DEFAUlT"
    untagged 1-48
    tagged 49-50
    no ip address
    exit
    vlan 19
    name "GUEST_WiFi"
    tagged 50-51
    no ip address
    exit
    vlan 20
    name "WIFI"
    tagged 50-51
    no ip address
    exit
    no dhcp config-file-update
    password manager
    password operator



  • 2.  RE: 2620 100% CPU Util; Crashing when Source-Port Filter Applied

    Posted Jun 03, 2013 08:55 AM

    Doesn't sound at all healthy. I'd suggest calling support.



  • 3.  RE: 2620 100% CPU Util; Crashing when Source-Port Filter Applied

    Posted Jun 03, 2013 08:59 PM

    Upgrade them to the latest firmware first.



  • 4.  RE: 2620 100% CPU Util; Crashing when Source-Port Filter Applied

    Posted Jun 03, 2013 10:08 PM

    They are running the latest firmware.



  • 5.  RE: 2620 100% CPU Util; Crashing when Source-Port Filter Applied

    Posted Jun 04, 2013 01:13 AM

    What happens if you try to apply it with the port in "disable" state?



  • 6.  RE: 2620 100% CPU Util; Crashing when Source-Port Filter Applied

    Posted Jun 05, 2013 12:51 PM

    I hadn't tried it with the port "admin down" but I did try it with no traffic at all on the switch.  I connected to the console port and unplugged every other port.  Still crashed.