Velocity Reviews - Computer Hardware Reviews

Velocity Reviews > Newsgroups > Computing > Cisco > high loading in catalyst 6509

Reply
Thread Tools

high loading in catalyst 6509

 
 
Thomas Wu
Guest
Posts: n/a
 
      12-30-2003
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



 
Reply With Quote
 
 
 
 
Mike
Guest
Posts: n/a
 
      12-30-2003
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

 
Reply With Quote
 
 
 
 
AnyBody43
Guest
Posts: n/a
 
      12-31-2003
Mike <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>...
> 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
 
Reply With Quote
 
AnyBody43
Guest
Posts: n/a
 
      12-31-2003
Mike <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>...
> 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.
 
Reply With Quote
 
 
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
High cpu with Catalyst 6509 sup2/msfc2/pfc2 512Mb ram acdsp Cisco 6 02-02-2007 05:44 PM
ACL issue on Catalyst 6509 with SUP1A-2GE Martin Turba Cisco 4 03-14-2005 11:42 AM
Deleting VLANs from Catalyst 6509 Scott Cisco 3 05-19-2004 01:32 PM
Sup 720 vs Sup II in Catalyst 6509 netman42 Cisco 7 04-19-2004 03:40 PM
Catalyst 6509 VLAN and SNMP question Martin Haberstroh Cisco 0 11-04-2003 04:34 PM



Advertisments