high loading in catalyst 6509

Discussion in 'Cisco' started by Thomas Wu, Dec 30, 2003.

  1. Thomas Wu

    Thomas Wu Guest

    Hi all,

    Any body knows what happen /w this switches. MLS is enable one this
    switches.

    (enable) sh proc cpu

    CPU utilization for five seconds: 99.12%
    one minute: 88.93%
    five minutes: 99.02%

    PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
    --- ----------- ---------- -------- ------- ------- ------- --- ------------
    ---
    1 0 0 0 0.88% 11.07% 0.98% -2 Kernel and
    Idle
    2 4 233 1000 0.00% 0.00% 0.00% -2 Flash MIB
    Updat
    ........
    ..........
    327 381913 650289 8000 0.04% 0.00% 0.00% 0 NetFlow
    28 49356409 25304902 501000 97.44% 87.15% 97.00% 0 Fib

    (enable) sh mls
    Total packets switched = 188665256398
    Total bytes switched = 87959486221049
    Total routes = 139526
    Long-duration flows aging time = 1920 seconds

    IP statistics flows aging time = 256 seconds
    IP statistics flows fast aging time = 0 seconds, packet threshold = 0
    IP Current flow mask is Destination flow
    Netflow Data Export version: 7
    Netflow Data Export disabled
    Netflow Data Export port/host is not configured.
    Total packets exported = 0

    IPX statistics flows aging time = 256 seconds
    IPX flow mask is Destination flow
    IPX max hop is 255


    Rate limiting is turned off, packets are bridged to router
    Load balancing hash is based on source and destination IP addresses
    Thomas Wu, Dec 30, 2003
    #1
    1. Advertising

  2. Thomas Wu

    Mike Guest

    Thomas Wu wrote:
    > Hi all,
    >
    > Any body knows what happen /w this switches. MLS is enable one this
    > switches.
    >
    > (enable) sh proc cpu
    >
    > CPU utilization for five seconds: 99.12%
    > one minute: 88.93%
    > five minutes: 99.02%
    >
    > PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
    > --- ----------- ---------- -------- ------- ------- ------- --- ------------
    > ---
    > 1 0 0 0 0.88% 11.07% 0.98% -2 Kernel and
    > Idle
    > 2 4 233 1000 0.00% 0.00% 0.00% -2 Flash MIB
    > Updat
    > ........
    > ..........
    > 327 381913 650289 8000 0.04% 0.00% 0.00% 0 NetFlow
    > 28 49356409 25304902 501000 97.44% 87.15% 97.00% 0 Fib
    >
    > (enable) sh mls
    > Total packets switched = 188665256398
    > Total bytes switched = 87959486221049
    > Total routes = 139526
    > Long-duration flows aging time = 1920 seconds
    >
    > IP statistics flows aging time = 256 seconds
    > IP statistics flows fast aging time = 0 seconds, packet threshold = 0
    > IP Current flow mask is Destination flow
    > Netflow Data Export version: 7
    > Netflow Data Export disabled
    > Netflow Data Export port/host is not configured.
    > Total packets exported = 0
    >
    > IPX statistics flows aging time = 256 seconds
    > IPX flow mask is Destination flow
    > IPX max hop is 255
    >
    >
    > Rate limiting is turned off, packets are bridged to router
    > Load balancing hash is based on source and destination IP addresses
    >
    >
    >

    Just a guess, but it would appear to me that something is causing
    changes in the forwarding table. I'd look through the show
    spanning-tree stats and make sure spanning tree is stable. Also, what
    does "show log" and "show logging buf 1023" indicate, if anything?

    -Mike
    Mike, Dec 30, 2003
    #2
    1. Advertising

  3. Thomas Wu

    AnyBody43 Guest

    Mike <> wrote in message news:<>...
    > Thomas Wu wrote:
    > > Hi all,
    > >
    > > Any body knows what happen /w this switches. MLS is enable one this
    > > switches.
    > >
    > > (enable) sh proc cpu
    > >
    > > CPU utilization for five seconds: 99.12%
    > > one minute: 88.93%
    > > five minutes: 99.02%
    > >
    > > PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
    > > --- ----------- ---------- -------- ------- ------- ------- --- ------------
    > > ---
    > > 1 0 0 0 0.88% 11.07% 0.98% -2 Kernel and
    > > Idle
    > > 2 4 233 1000 0.00% 0.00% 0.00% -2 Flash MIB
    > > Updat
    > > ........
    > > ..........
    > > 327 381913 650289 8000 0.04% 0.00% 0.00% 0 NetFlow
    > > 28 49356409 25304902 501000 97.44% 87.15% 97.00% 0 Fib
    > >
    > > (enable) sh mls
    > > Total packets switched = 188665256398
    > > Total bytes switched = 87959486221049
    > > Total routes = 139526
    > > Long-duration flows aging time = 1920 seconds
    > >
    > > IP statistics flows aging time = 256 seconds
    > > IP statistics flows fast aging time = 0 seconds, packet threshold = 0
    > > IP Current flow mask is Destination flow
    > > Netflow Data Export version: 7
    > > Netflow Data Export disabled
    > > Netflow Data Export port/host is not configured.
    > > Total packets exported = 0
    > >
    > > IPX statistics flows aging time = 256 seconds
    > > IPX flow mask is Destination flow
    > > IPX max hop is 255
    > >
    > >
    > > Rate limiting is turned off, packets are bridged to router
    > > Load balancing hash is based on source and destination IP addresses
    > >
    > >
    > >

    > Just a guess, but it would appear to me that something is causing
    > changes in the forwarding table. I'd look through the show
    > spanning-tree stats and make sure spanning tree is stable. Also, what
    > does "show log" and "show logging buf 1023" indicate, if anything?
    >
    > -Mike


    Hi,

    I am not up to date with this (hence my interest!) however:
    I agree with Mike up to a point.

    Key details seem to be:
    97.44% 87.15% 97.00% 0 Fib
    Total routes = 139526
    Total packets switched = 188665256398

    That's a lot of Fibbing.
    WOW! That seems a LOT of routes. I am at present assuming that they are
    IP routes. Are you an ISP or something?

    It is also a fair few packets 188,665,256,398 represents
    12,000 pps every second for six months.

    Anyway what appears to be happening is that the Forwarding
    Information Base is being continually updated.

    The FIB is I think (as I said I am a bit out of date with this)
    computed from the routing table. So the idea is that the routing table
    is not stable. This could be the result of either external (to
    the box) routes changing or because a local interface is going up
    and down.

    I think that the FIB will probably contain the outbound interface
    so it could be a part of a channel?

    I am not familiar with the current (MSFC II?) architecture however
    the problem may well be originating from outside the switch.
    e.g. the MLS Router or even outside your network.


    For further progress send:
    sh ver
    sh mod
    sh mls *
    sh logg buf 1023
    sh log

    sh conf
    sh run of the router

    Obviously the config info should be sanitised of passwords and
    perhaps even of any real IP addresses. (sh tech removes passwords)
    (note that even ENCRYPTED passwords are not at all secure
    other than the "secret" ones)


    If it is too big for usenet send it directly to me in bundles of
    quite a bit less than 1M (hotmail).

    You could use the e-mail address here (I normally don't read it
    but I have recently cleared out all the junk) and send me a sh
    tech. Zip it up if you like.


    http://www.muada.com/projects/bitmaprouting.txt says:
    In early 2001, the global routing table reached 100,000 routes
    AnyBody43, Dec 31, 2003
    #3
  4. Thomas Wu

    AnyBody43 Guest

    Mike <> wrote in message news:<>...
    > Thomas Wu wrote:
    > > Hi all,
    > >
    > > Any body knows what happen /w this switches. MLS is enable one this
    > > switches.
    > >
    > > (enable) sh proc cpu
    > >
    > > CPU utilization for five seconds: 99.12%
    > > one minute: 88.93%
    > > five minutes: 99.02%
    > >
    > > PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
    > > --- ----------- ---------- -------- ------- ------- ------- --- ------------
    > > ---
    > > 1 0 0 0 0.88% 11.07% 0.98% -2 Kernel and
    > > Idle
    > > 2 4 233 1000 0.00% 0.00% 0.00% -2 Flash MIB
    > > Updat
    > > ........
    > > ..........
    > > 327 381913 650289 8000 0.04% 0.00% 0.00% 0 NetFlow
    > > 28 49356409 25304902 501000 97.44% 87.15% 97.00% 0 Fib
    > >
    > > (enable) sh mls
    > > Total packets switched = 188665256398
    > > Total bytes switched = 87959486221049
    > > Total routes = 139526
    > > Long-duration flows aging time = 1920 seconds
    > >
    > > IP statistics flows aging time = 256 seconds
    > > IP statistics flows fast aging time = 0 seconds, packet threshold = 0
    > > IP Current flow mask is Destination flow
    > > Netflow Data Export version: 7
    > > Netflow Data Export disabled
    > > Netflow Data Export port/host is not configured.
    > > Total packets exported = 0
    > >
    > > IPX statistics flows aging time = 256 seconds
    > > IPX flow mask is Destination flow
    > > IPX max hop is 255
    > >
    > >
    > > Rate limiting is turned off, packets are bridged to router
    > > Load balancing hash is based on source and destination IP addresses
    > >
    > >
    > >

    > Just a guess, but it would appear to me that something is causing
    > changes in the forwarding table. I'd look through the show
    > spanning-tree stats and make sure spanning tree is stable. Also, what
    > does "show log" and "show logging buf 1023" indicate, if anything?
    >
    > -Mike



    Also:

    Runtime(ms) ....
    49356409 25304902 501000 97.44% 87.15% 97.00% 0 Fib

    We have done 49356 seconds or about 15 hours of FIBbing so far.
    That is quite a bit.
    AnyBody43, Dec 31, 2003
    #4
    1. Advertising

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

It takes just 2 minutes to sign up (and it's free!). Just click the sign up button to choose a username and then you can ask your own questions on the forum.
Similar Threads
  1. Martin Haberstroh

    Catalyst 6509 VLAN and SNMP question

    Martin Haberstroh, Nov 4, 2003, in forum: Cisco
    Replies:
    0
    Views:
    641
    Martin Haberstroh
    Nov 4, 2003
  2. netman42
    Replies:
    7
    Views:
    6,384
    Chris Thomas
    Apr 19, 2004
  3. Scott
    Replies:
    3
    Views:
    12,894
    Scott
    May 19, 2004
  4. Martin Turba
    Replies:
    4
    Views:
    2,447
    Martin Turba
    Mar 14, 2005
  5. acdsp
    Replies:
    6
    Views:
    4,279
    acdsp
    Feb 2, 2007
Loading...

Share This Page