what is a good value for the log buffer? C850 series

Discussion in 'Cisco' started by Steven, Jan 10, 2008.

  1. Steven

    Steven Guest

    Hi all!

    I recently upgraded my C857 memory from 64Mb to 128Mb.
    (The 850 series have a memory slot, where you can place in a PC133
    DIMM - just make sure it is a low profile dimm)

    I was inspired by this article: (I used a low profile dimm -- no need
    te cut the metal frame) At your own risk!
    http://www.instructables.com/id/Adding-Off-The-Shelf-Memory-to-a-Cisco-871/

    I have a picture of the inside if someone is interested.

    It now boots up with:

    "System Bootstrap, Version 12.3(8r)YI4, RELEASE SOFTWARE
    Technical Support: http://www.cisco.com/techsupport
    Copyright (c) 2006 by cisco Systems, Inc.

    C850 series (Board ID: 2-149) platform with 131072 Kbytes of main
    memory"

    :D


    No, to actually do something usefull with the extra ram :)
    I want to increase the log buffer a bit.
    How much should I set it with 128Mb ram?
    I've set it to 20k for now

    My device is als configered as DNS forwarder (to my ISP's upstream DNS
    servers)
    Can I set the DNS cache time out a bit higher?


    Greetings & tanks in advace
    S.
     
    Steven, Jan 10, 2008
    #1
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  2. Steven

    Merv Guest

    20K for logging buffer should suffice

    Post output of show memory summary
     
    Merv, Jan 10, 2008
    #2
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  3. Steven

    Steven Guest

    sh mem
    Head Total(b) Used(b) Free(b) Lowest(b)
    Largest(b)

    Processor 81D5CFA4 90845276 16345888 74499388 74499388
    74470648

    I/O 7400000 12582912 3590636 8992276 8981344
    8978940


    Thanks!
    S;
     
    Steven, Jan 11, 2008
    #3
  4. Steven

    Merv Guest

    you have around 74 Megs of free memory
     
    Merv, Jan 11, 2008
    #4
  5. Steven

    Sam Wilson Guest

    But you probably don't want to dedicate 74MB to the log buffer. :)

    On our fairly busy 6500s we have the log buffer up at 128KB, which is
    sometimes useful but can also be a pain to scroll through to the end.

    Sam
     
    Sam Wilson, Jan 11, 2008
    #5
  6. Steven

    Steven Guest

    Hi there!
    Thanks for the tip.
    Seems a good amound to me.
    The log fills up with 7-12K/day
    so 128K wil give me a +- week or more

    More then enough
    Thx!

    S.
     
    Steven, Jan 11, 2008
    #6
  7. Steven

    Merv Guest

    You can also set up a syslog server to retain all loggin info for a
    long period of time.

    I like the logging buffer so that I can quickly find recent messages
    while on a routr/switches that I am torublshooting


    CAT6K-WILDCAT#show logging | inc Jan 11
    Jan 11 10:57:51.684 EST: %SYS-5-CONFIG_I: Configured from console by
    console

    CAT6K-WILDCAT#show logging | inc Jan 11 10:
    Jan 11 10:57:51.684 EST: %SYS-5-CONFIG_I: Configured from console by
    console
     
    Merv, Jan 11, 2008
    #7
  8. Steven

    Steven Guest

    Hey

    Thanks for the tip!
    Very usefull!

    Greetings,
    Steven
     
    Steven, Jan 11, 2008
    #8
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