1721 dosn't answer ping

Discussion in 'Cisco' started by DarejDok \(Dariusz D±browski\), Jul 10, 2003.

  1. Hello,

    My router 1721 sometimes dosn't answer
    ping request. This router connect my LAN network
    to Internet via DSL modem.
    It happend while there is a big traffic flow on thats line.

    I added this line to config:

    scheduler allocate 4000 1000

    It dosn't resolve my problem (not good enough).
    Could you help me please ?

    Darek
     
    DarejDok \(Dariusz D±browski\), Jul 10, 2003
    #1
    1. Advertisements

  2. About 25 users (a little).
    But the effect is like here:

    unavailable, time=300 ms, time=900 ms, ..., unavailable, unavailable,
    unavailable ....

    If I disconnect one segment of LAN (which generate bik traffic flow) router
    answere correctly:
    <10 ms, <10 ms, <10ms, <10ms etc..

    Why does big trafic flow from LAN block ping packets ?

    Darek
     
    DarejDok \(Dariusz D±browski\), Jul 10, 2003
    #2
    1. Advertisements

  3. DarejDok \(Dariusz D±browski\)

    Dave Phelps Guest

    Big traffic flows delay all packets, not just ping.
     
    Dave Phelps, Jul 11, 2003
    #3
  4. I have 2 routers:
    If I connect my LAN to 1603 router (ISDN line to Internet)
    everything is ok. Connection from any LAN workstation
    to Internet works fine, pingi to router works fine (<10ms), and
    there aren't any problems. CPU utilization on router: 14%
    BUT
    If I connect my LAN (the same traffic - reconnect on run-time)
    to 1721 router (DSL line to Internet) something is wrong:
    Connection form any LAN workstation to Internet
    works with breaks, ping to router works with breaks (=800ms, 300ms, timeout)
    CPU utilization on router (after 1 hour): 75 %

    What is the problem ?
    "IP Input" process eat procesor time. But why ?

    Help me please.
    Below there are some extended information:

    Darek


    [CISCO 1603] ---------------------------------
    -----------------------------------
    CPU utilization for five seconds: 14%/12%; one minute: 16%; five minutes:
    15%
    PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
    ......
    10 726628 646166 1124 1.80% 1.82% 1.47% 0 IP Input
    --------------------------
    Cisco Internetwork Operating System Software
    IOS (tm) 1600 Software (C1600-Y-M), Version 11.3(11a)T1, RELEASE SOFTWARE
    (fc1)
    Copyright (c) 1986-1999 by cisco Systems, Inc.
    Compiled Fri 24-Sep-99 01:17 by pwade
    Image text-base: 0x02005000, data-base: 0x023DC42C

    ROM: System Bootstrap, Version 12.0(3)T, RELEASE SOFTWARE (fc1)
    ROM: 1600 Software (C1600-RBOOT-R), Version 12.0(3)T, RELEASE SOFTWARE
    (fc1)

    Router uptime is 4 days, 5 hours, 16 minutes
    System restarted by reload
    System image file is "c1600-y-mz.113-11a.T1", booted via flash

    cisco 1603 (68360) processor (revision C) with 6144K/2048K bytes of memory.
    Processor board ID 16974495, with hardware revision 00000002
    Bridging software.
    X.25 software, Version 3.0.0.
    Basic Rate ISDN software, Version 1.1.
    1 Ethernet/IEEE 802.3 interface(s)
    1 ISDN Basic Rate interface(s)
    System/IO memory with parity disabled
    8192K bytes of DRAM onboard
    System running from RAM
    7K bytes of non-volatile configuration memory.
    4096K bytes of processor board PCMCIA flash (Read/Write)

    Configuration register is 0x2102


    [CISCO 1721]-----------------------------------
    ---------------------------
    CPU utilization for five seconds: 73%/75%; one minute: 81%; five minutes:
    75%
    PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
    27 234564 323734 1222 81.55% 71.36% 75.83% 0 IP Input
    ---------------------------
    Cisco Internetwork Operating System Software
    IOS (tm) C1700 Software (C1700-Y-M), Version 12.2(11)T2, RELEASE SOFTWARE
    (fc1)
    TAC Support: http://www.cisco.com/tac
    Copyright (c) 1986-2002 by cisco Systems, Inc.
    Compiled Mon 14-Oct-02 02:37 by ccai
    Image text-base: 0x80008124, data-base: 0x807E4BA4

    ROM: System Bootstrap, Version 12.2(7r)XM1, RELEASE SOFTWARE (fc1)

    Linde_dsl_router uptime is 2 minutes
    System returned to ROM by power-on
    System image file is "flash:c1700-y-mz.122-11.T2.bin"

    cisco 1721 (MPC860P) processor (revision 0x100) with 29492K/3276K bytes of
    memor
    y.
    Processor board ID FOC06370LY8 (506863719), with hardware revision 0000
    MPC860P processor: part number 5, mask 2
    Bridging software.
    X.25 software, Version 3.0.0.
    1 Ethernet/IEEE 802.3 interface(s)
    1 FastEthernet/IEEE 802.3 interface(s)
    32K bytes of non-volatile configuration memory.
    16384K bytes of processor board System flash (Read/Write)

    Configuration register is 0x2102
     
    DarejDok \(Dariusz D±browski\), Jul 11, 2003
    #4
  5. I don't suppose there are some debugging activities enabled on the 1721...

    -Michael


     
    Michael T. Hall, Jul 13, 2003
    #5
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.