Cat 5500 Earl process is nearly 80% cpu usage

Discussion in 'Cisco' started by phil41, Nov 18, 2005.

  1. phil41

    phil41 Guest

    Hi

    I have a problem since one day with an old Catalyst 5500 which is up
    since 384 days.
    Console or telnet access are very slow and snmp query are often timed
    out.
    No recent change in the network, nothing in the logs.
    The only thing I found is that the Earl process is nearly 80% cpu
    usage.

    cat_c13> (enable) ps -c
    CPU usage information:
    Name CPU-Usage Invokations
    --------------- --------- -----------
    idle 4% 1
    Statuspoll 0% 1
    SynDiags 0% 1
    SynConfig 3% 1
    SWPoll64bCnt 0% 1
    SL_TASK 0% 1
    RedundantTask 0% 1
    nvram_active 0% 1
    gentcp_act 0% 1
    THREAD 0% 1
    telnet10 0% 1
    ATM/RSM Support 0% 1
    telnet12 0% 1
    telnet14 1% 1
    SecurityRx 0% 1
    Earl 77% 1
    Console 0% 1
    telnetd 0% 1
    llcSSTPFlood 0% 1
    sntp_recd 0% 1
    sntp_xmitd 0% 1
    cdpd 0% 1
    cdpdtimer 0% 1
    SptTimer 2% 1
    SptBpduRx 8% 1
    VtpTimer 0% 1
    VtpRx 0% 1
    RMON AlarmTimer 0% 1
    ProtocolTimer 0% 1
    DTP_Rx 0% 1
    PAgP_Rx 0% 1
    PAgP_Group_Rx 0% 1
    sptHelper 0% 1
    sptTraps 0% 1
    fsd_timer 0% 1
    SysLogTask 0% 1
    pinggateA 0% 1
    snmpdm 0% 1

    System Idle - Current: 1% High: 1% Low: 1% Average: 1%

    cat_c13> (enable) sh sys
    PS1-Status PS2-Status Fan-Status Temp-Alarm Sys-Status Uptime d,h:m:s
    Logout
    ---------- ---------- ---------- ---------- ---------- --------------
    ---------
    ok ok ok off ok 384,07:26:39
    20 min

    PS1-Type PS2-Type Modem Baud Traffic Peak Peak-Time
    ---------- ---------- ------- ----- ------- ----
    -------------------------
    WS-C5508 WS-C5508 disable 9600 1% 16% Fri Nov 18 2005,
    15:54:32

    System Name System Location System Contact
    ------------------------ ------------------------
    ------------------------
    cat_c13

    cat_c13> (enable) sh cam count dyn
    Total Matching CAM Entries = 762

    cat_c13> (enable) sh mod
    Mod Module-Name Ports Module-Type Model Serial-Num
    Status
    --- ------------------- ----- --------------------- --------- ---------
    -------
    1 2 100BaseFX MM Supervis WS-X5506 006824425
    ok
    2 2 100BaseFX MM Supervis WS-X5506 007408712
    standby
    3 back_adm1 1 Route Switch WS-X5302 028993639
    ok
    4 24 10/100BaseTX Ethernet WS-X5224 007420093
    ok
    5 24 10BaseT Ethernet WS-X5013 006822219
    ok
    6 24 10/100BaseTX Ethernet WS-X5225R 011580347
    ok
    7 24 10/100BaseTX Ethernet WS-X5225R 012132342
    ok
    9 24 10/100BaseTX Ethernet WS-X5225R 011575143
    ok
    10 24 10/100BaseTX Ethernet WS-X5225R 012131907
    ok

    Mod MAC-Address(es) Hw Fw Sw
    --- -------------------------------------- ------ ----------
    -----------------
    1 00-80-1c-23-70-00 to 00-80-1c-23-73-ff 1.0 2.2(2) 4.4(1)
    2 00-80-1c-23-70-00 to 00-80-1c-23-73-ff 2.1 2.4(1) 4.4(1)
    3 00-e0-1e-39-9e-30 to 00-e0-1e-39-9e-31 7.7 20.22
    12.0(9)W5(17a)
    4 00-e0-1e-47-d9-18 to 00-e0-1e-47-d9-2f 1.3 3.1(1) 4.4(1)
    5 00-10-54-85-8d-b8 to 00-10-54-85-8d-cf 1.0 1.1 4.4(1)
    6 00-50-a2-37-e6-f0 to 00-50-a2-37-e7-07 2.0 4.1(1) 4.4(1)
    7 00-50-a2-f0-7d-a0 to 00-50-a2-f0-7d-b7 3.0 4.3(1) 4.4(1)
    9 00-50-a2-37-e2-70 to 00-50-a2-37-e2-87 2.0 4.1(1) 4.4(1)
    10 00-50-a2-f0-7d-d0 to 00-50-a2-f0-7d-e7 3.0 4.3(1) 4.4(1)

    Mod Sub-Type Sub-Model Sub-Serial Sub-Hw
    --- -------- --------- ---------- ------
    1 EARL 1+ WS-F5511 0005448642 1.0
    2 EARL 1+ WS-F5511 0006839294 1.0
    cat_c13> (enable)

    Has somebody experienced this problem and how can I troubleshout it ?

    Thanks for your help.

    Philippe
     
    phil41, Nov 18, 2005
    #1
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  2. phil41

    Guest

    > Console or telnet access are very slow and snmp query
    > are often timed out.
    > No recent change in the network, nothing in the logs.
    > The only thing I found is that the Earl process is nearly 80% cpu
    > usage


    http://www.cisco.com/warp/public/473/76.html#topic1
    The Encoded Address Recognition Logic (EARL) is a
    centralized processing engine for learning and forwarding
    packets based upon MAC address on the Catalyst 5000
    Supervisor Engines. The EARL stores the VLAN, MAC
    address, and port relationships. These relationships are
    used to make switching decisions in hardware.

    Maybe you have problems with excessive CAM table activity?

    > cat_c13> (enable) sh cam count dyn
    > Total Matching CAM Entries = 762


    Not too many however I would guess that there
    is a lot of software involvement in address learning on the 5500
    so check that out first.

    The original 4000 for example only did 30 addresses a second
    at first then speeded up to 100 a second and it is rumoured
    that an early Bay 100Mpbs switch only did 1 a second.

    Bug?

    http://www.cisco.com/en/US/products/hw/switches/ps679/products_tech_note09186a008009495b.shtml
     
    , Nov 19, 2005
    #2
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