[c-nsp] 3550 high cpu & process switched traffic
omar parihuana
omar.parihuana at gmail.com
Fri Aug 18 13:42:36 EDT 2006
Hi,
There is something wrong.. I have a 3550 with near 100SVI and my CPU
process not reach 20%
! omitted...
!
Vlan369 192.168.67.25 YES NVRAM up
up
Vlan372 unassigned YES NVRAM up
up
Vlan375 unassigned YES NVRAM down
down
Vlan381 unassigned YES NVRAM down
down
Vlan384 unassigned YES NVRAM down
down
Vlan385 unassigned YES NVRAM down
down
Vlan387 192.168.67.37 YES NVRAM up
up
Vlan388 192.168.66.65 YES NVRAM up
up
Vlan389 192.168.67.169 YES NVRAM up
up
Vlan390 unassigned YES NVRAM up
up
Vlan391 unassigned YES NVRAM down
down
Vlan392 192.168.66.85 YES NVRAM up
up
Vlan393 192.168.66.89 YES NVRAM up
up
Vlan394 192.168.67.129 YES NVRAM up
up
Vlan395 192.168.66.105 YES NVRAM up
up
Vlan396 192.168.67.101 YES NVRAM up
up
Vlan397 192.168.67.165 YES NVRAM up
up
Vlan398 unassigned YES NVRAM up
up
Vlan399 unassigned YES NVRAM up
up
Vlan400 192.168.68.5 YES NVRAM up
up
Vlan401 192.168.68.9 YES NVRAM up
up
Vlan402 unassigned YES NVRAM down
down
Vlan403 unassigned YES NVRAM up
down
Vlan404 unassigned YES NVRAM down
down
Vlan405 192.168.69.97 YES manual up
up
Vlan406 192.168.68.13 YES NVRAM up
up
Vlan407 unassigned YES NVRAM up
up
Vlan408 unassigned YES NVRAM up
up
Vlan409 unassigned YES NVRAM down
down
Vlan410 unassigned YES NVRAM up
up
Vlan411 unassigned YES NVRAM up
up
Vlan413 192.168.68.21 YES NVRAM up
up
Vlan414 unassigned YES NVRAM up
up
Vlan415 unassigned YES NVRAM down
down
Vlan416 unassigned YES NVRAM down
down
Vlan421 unassigned YES NVRAM up
up
Vlan422 192.168.69.17 YES NVRAM up
up
Vlan423 unassigned YES NVRAM up
up
Vlan424 unassigned YES NVRAM up
up
Vlan425 unassigned YES NVRAM up
up
Vlan426 192.168.68.193 YES NVRAM up
up
Vlan427 192.168.68.253 YES NVRAM up
up
Vlan428 192.168.69.89 YES NVRAM up
up
!
! ... and continue....
switch-l3#sh processes cpu
CPU utilization for five seconds: 10%/1%; one minute: 15%; five minutes: 11%
Please give more details, all sh process cpu.. Did you try restart
the switch, or maybe there are some background intensive CPU process
(i,e. debugs...)
Rgds.
On 8/18/06, Tassos Chatzithomaoglou <achatz at forthnet.gr> wrote:
> I have a 3550 (12.1(22)EA8) which is constantly showing high cpu usage :
>
> 3550#sh proc cpu
> CPU utilization for five seconds: 99%/96%; one minute: 97%; five minutes: 97%
>
> If i'm not wrong, most of it is due to interrupts and i'm trying to find out what exactly is causing
> this. The 3550 has 3 SVIs (1 for management), 6 routed interfaces (5 of them have mls qos
> configured) and 2 L2 interfaces (one is trunk).
>
> Also I would like to ask if the following output (only processor used for eggress traffic on ALL
> interfaces) is considered normal for 3550 switches:
>
> 3550#sh int stats
> Vlan1
> Switching path Pkts In Chars In Pkts Out Chars Out
> Processor 179 12172 179 10740
> Route cache 0 0 0 0
> Total 179 12172 179 10740
> Vlan4
> Switching path Pkts In Chars In Pkts Out Chars Out
> Processor 2806 179584 2806 168360
> Route cache 8295 581139 0 0
> Total 11101 760723 2806 168360
> Vlan10
> Switching path Pkts In Chars In Pkts Out Chars Out
> Processor 21993427 2785897656 20910415 2025707486
> Route cache 2289603255 1233480520 0 0
> Total 2311596682 4019378176 20910415 2025707486
> Interface FastEthernet0/1 is disabled
>
> FastEthernet0/2
> Switching path Pkts In Chars In Pkts Out Chars Out
> Processor 0 0 718962 112668280
> Route cache 0 0 0 0
> Total 0 0 718962 112668280
> FastEthernet0/3
> Switching path Pkts In Chars In Pkts Out Chars Out
> Processor 98405 6710609 535543 50002650
> Route cache 2288708113 1141208459 0 0
> Total 2288806518 1147919068 535543 50002650
> FastEthernet0/4
> Switching path Pkts In Chars In Pkts Out Chars Out
> Processor 89343 11874108 396765671 2089412449
> Route cache 543340008 1149008067 0 0
> Total 543429351 1160882175 396765671 2089412449
>
> ....
>
>
> "sh int switching" shows the same problem for all interfaces : The Fast path has 0 entries for all
> protocols including IP.
>
> Regards,
> Tassos
> _______________________________________________
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--
Omar E.P.T
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