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New Member

Why cisco WS-C4506-E Switches High CPU???

Hi I have an unusual behavior on Catalyst 4506E switche. The cpu utilization is 35%

The process K2FibAdjMan Host Mov is consuming HIgh ressources....

Does anyone have any suggestion?

Thnaks a lot

JT-4506-1#sh proc cpu so 5se

CPU utilization for five seconds: 32%/0%; one minute: 30%; five minutes: 31%

PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process

  58   8818750353707169302          0 21.19% 17.64% 18.35%   0 Cat4k Mgmt LoPri

  57  2535818316 443647374       5715  7.27%  7.83%  7.88%   0 Cat4k Mgmt HiPri

109   431437899 749682568        575  0.79%  0.93%  0.98%   0 IP Input        

  14   2890879741522020496        189  0.47%  0.61%  0.59%   0 ARP Input       

116   103254436 378426195        272  0.39%  0.39%  0.39%   0 Spanning Tree   

112   2657381781294108349        205  0.31%  1.06%  0.86%   0 ADJ resolve proc



JT-4506-1#sh pl health        

                     %CPU   %CPU    RunTimeMax   Priority  Average %CPU  Total

                     Target Actual Target Actual   Fg   Bg 5Sec Min Hour  CPU

this is unusual:

K2L2 Address Table R   2.00  18.99     12      5  100  500   12   9    7  51455:59

K2FibAdjMan Host Mov   2.00  12.43     10      7  100  500    8   8    7  11238:47




JT-4506-1#sh mac add aging-time

Vlan    Aging Time      Configured Aging Time

----    ----------      ---------------------

Global Vlan Admin Age: 300

   1    300             300

100    300             300

300    300             300

500    300             300

501    300             300

502    300             300

503    300             300

600    15              300     

why vlan600 aging time is 15sec??  no edit



JT-4506-1#sh version

Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500-ENTSERVICESK9-M), Version 12.2(54)SG, RELEASE SOFTWARE (fc3)

Technical Support:

http://www.cisco.com/techsupport


Copyright (c) 1986-2010 by Cisco Systems, Inc.

Compiled Sun 27-Jun-10 00:29 by prod_rel_team

Image text-base: 0x10000000, data-base: 0x123F21AC


ROM: 12.2(31r)SGA3

Pod Revision 16, Force Revision 31, Tie Revision 32

cisco WS-C4506-E (MPC8540) processor (revision 13) with 524288K bytes of memory.

Processor board ID FOX1524GGAV

MPC8540 CPU at 800Mhz, Supervisor V-10GE

Last reset from PowerUp

6 Virtual Ethernet interfaces

106 Gigabit Ethernet interfaces

2 Ten Gigabit Ethernet interfaces

511K bytes of non-volatile configuration memory.


Configuration register is 0x2102

Everyone's tags (3)
4 REPLIES

Why cisco WS-C4506-E Switches High CPU???

My guess would be that you have a spanning tree issue which is causing topology changes in the network, hence the MAC address moves and the short aging timer i.e., the same value as the forward delay, being seen for VLAN 600.

If you run the show spanning-tree vlan 600 detail command the first few lines of the output will indicate the number of topology changes that have occurred, when the last one was and the interface it was received from.

Regards

New Member

Why cisco WS-C4506-E Switches High CPU???

hi steve

I don't know where the problem.

show spanning-tree vlan 600 detail

VLAN0600 is executing the ieee compatible Spanning Tree protocol

  Bridge Identifier has priority 24576, sysid 600, address 0007.7dc5.cc80

  Configured hello time 2, max age 20, forward delay 15

  We are the root of the spanning tree

  Topology change flag set, detected flag set

  Number of topology changes 133150 last change occurred 00:01:55 ago

          from GigabitEthernet3/11

  Times:  hold 1, topology change 35, notification 2

          hello 2, max age 20, forward delay 15

  Timers: hello 1, topology change 27, notification 0, aging 15

sh spanning-tree interface gi3/11 de


Port 139 (GigabitEthernet3/11) of VLAN0600 is designated forwarding

   Port path cost 4, Port priority 128, Port Identifier 128.139.

   Designated root has priority 25176, address 0007.7dc5.cc80

   Designated bridge has priority 25176, address 0007.7dc5.cc80

   Designated port id is 128.139, designated path cost 0

   Timers: message age 0, forward delay 0, hold 0

   Number of transitions to forwarding state: 1

   Link type is point-to-point by default

   BPDU: sent 31838426, received 441659

sh run inter gi3/11

interface GigabitEthernet3/11

switchport private-vlan host-association 600 610

switchport mode private-vlan host

end

sh mac add inter gi3/11


Unicast Entries

vlan   mac address     type        protocols               port

-------+---------------+--------+---------------------+--------------------

600    0014.5eac.777d   dynamic ip                    GigabitEthernet3/11  

600    001a.4be1.e284   dynamic ip                    GigabitEthernet3/11  

600    001a.6c67.2a2f   dynamic other                 GigabitEthernet3/11  

Multicast Entries

vlan    mac address     type    ports

-------+---------------+-------+--------------------------------------------

600    0100.5e05.0505     igmp Gi2/4,Gi2/6,Gi3/1,Gi3/2,Gi3/3,Gi3/4,Gi3/5

                                Gi3/8,Gi3/9,Gi3/10,Gi3/11,Gi3/12,Gi3/14,Gi3/16

                                Gi3/17,Gi3/18,Gi3/19,Gi3/20,Gi3/21,Gi3/22

                                Gi3/23,Gi3/24,Gi3/26,Gi3/27,Gi3/36,Gi3/39

                                Gi3/41,Gi3/42,Gi3/43,Gi3/44,Gi3/45,Gi5/1

                                Gi5/2,Gi5/3,Gi5/4,Gi5/5,Gi5/6,Gi5/7,Gi5/8

                                Gi5/9,Gi5/10,Gi5/11,Gi5/12,Gi5/13,Gi5/14

                                Gi5/16,Gi5/17,Gi5/19,Gi5/20,Gi5/21,Gi5/22

                                Gi5/23,Gi5/26,Gi5/28,Gi5/29,Gi5/31,Gi5/32

                                Gi5/33,Gi5/34,Gi5/35,Gi5/36,Gi5/37,Gi5/38

                                Gi5/39,Gi5/40,Gi5/41,Gi5/43,Gi5/45,Gi5/47

600    0100.5e26.4cda     igmp Gi2/4,Gi2/6,Gi3/1,Gi3/2,Gi3/3,Gi3/4,Gi3/5

                                Gi3/8,Gi3/9,Gi3/10,Gi3/11,Gi3/12,Gi3/14,Gi3/16

                                Gi3/17,Gi3/18,Gi3/19,Gi3/20,Gi3/21,Gi3/22

                                Gi3/23,Gi3/24,Gi3/26,Gi3/27,Gi3/36,Gi3/39

                                Gi3/41,Gi3/42,Gi3/43,Gi3/44,Gi3/45,Gi5/1

                                Gi5/2,Gi5/3,Gi5/4,Gi5/5,Gi5/6,Gi5/7,Gi5/8

                                Gi5/9,Gi5/10,Gi5/11,Gi5/12,Gi5/13,Gi5/14

                                Gi5/16,Gi5/17,Gi5/19,Gi5/20,Gi5/21,Gi5/22

                                Gi5/23,Gi5/26,Gi5/28,Gi5/29,Gi5/31,Gi5/32

                                Gi5/33,Gi5/34,Gi5/35,Gi5/36,Gi5/37,Gi5/38

                                Gi5/39,Gi5/40,Gi5/41,Gi5/43,Gi5/45,Gi5/47

600    0100.5e6f.700c     igmp Gi2/4,Gi2/6,Gi3/1,Gi3/2,Gi3/3,Gi3/4,Gi3/5

                                Gi3/8,Gi3/9,Gi3/10,Gi3/11,Gi3/12,Gi3/14,Gi3/16

                                Gi3/17,Gi3/18,Gi3/19,Gi3/20,Gi3/21,Gi3/22

                                Gi3/23,Gi3/24,Gi3/26,Gi3/27,Gi3/36,Gi3/39

                                Gi3/41,Gi3/42,Gi3/43,Gi3/44,Gi3/45,Gi5/1

                                Gi5/2,Gi5/3,Gi5/4,Gi5/5,Gi5/6,Gi5/7,Gi5/8

                                Gi5/9,Gi5/10,Gi5/11,Gi5/12,Gi5/13,Gi5/14

                                Gi5/16,Gi5/17,Gi5/19,Gi5/20,Gi5/21,Gi5/22

                                Gi5/23,Gi5/26,Gi5/28,Gi5/29,Gi5/31,Gi5/32

                                Gi5/33,Gi5/34,Gi5/35,Gi5/36,Gi5/37,Gi5/38

                                Gi5/39,Gi5/40,Gi5/41,Gi5/43,Gi5/45,Gi5/47

600    0100.5e7f.ff64     igmp Gi2/4,Gi2/6,Gi3/1,Gi3/2,Gi3/3,Gi3/4,Gi3/5

                                Gi3/8,Gi3/9,Gi3/10,Gi3/11,Gi3/12,Gi3/14,Gi3/16

                                Gi3/17,Gi3/18,Gi3/19,Gi3/20,Gi3/21,Gi3/22

                                Gi3/23,Gi3/24,Gi3/26,Gi3/27,Gi3/36,Gi3/39

                                Gi3/41,Gi3/42,Gi3/43,Gi3/44,Gi3/45,Gi5/1

                                Gi5/2,Gi5/3,Gi5/4,Gi5/5,Gi5/6,Gi5/7,Gi5/8

                                Gi5/9,Gi5/10,Gi5/11,Gi5/12,Gi5/13,Gi5/14

                                Gi5/16,Gi5/17,Gi5/19,Gi5/20,Gi5/21,Gi5/22

                                Gi5/23,Gi5/26,Gi5/28,Gi5/29,Gi5/31,Gi5/32

                                Gi5/33,Gi5/34,Gi5/35,Gi5/36,Gi5/37,Gi5/38

                                Gi5/39,Gi5/40,Gi5/41,Gi5/43,Gi5/45,Gi5/47

600    0100.5e7f.fffa     igmp Gi2/4,Gi2/6,Gi3/1,Gi3/2,Gi3/3,Gi3/4,Gi3/5

                                Gi3/8,Gi3/9,Gi3/10,Gi3/11,Gi3/12,Gi3/14,Gi3/16

                                Gi3/17,Gi3/18,Gi3/19,Gi3/20,Gi3/21,Gi3/22

                                Gi3/23,Gi3/24,Gi3/26,Gi3/27,Gi3/36,Gi3/39

                                Gi3/41,Gi3/42,Gi3/43,Gi3/44,Gi3/45,Gi5/1

                                Gi5/2,Gi5/3,Gi5/4,Gi5/5,Gi5/6,Gi5/7,Gi5/8

                                Gi5/9,Gi5/10,Gi5/11,Gi5/12,Gi5/13,Gi5/14

                                Gi5/16,Gi5/17,Gi5/19,Gi5/20,Gi5/21,Gi5/22

                                Gi5/23,Gi5/26,Gi5/28,Gi5/29,Gi5/31,Gi5/32

                                Gi5/33,Gi5/34,Gi5/35,Gi5/36,Gi5/37,Gi5/38

                                Gi5/39,Gi5/40,Gi5/41,Gi5/43,Gi5/45,Gi5/47

600    0100.5e7f.fffd     igmp Gi2/4,Gi2/6,Gi3/1,Gi3/2,Gi3/3,Gi3/4,Gi3/5

                                Gi3/8,Gi3/9,Gi3/10,Gi3/11,Gi3/12,Gi3/14,Gi3/16

                                Gi3/17,Gi3/18,Gi3/19,Gi3/20,Gi3/21,Gi3/22

                                Gi3/23,Gi3/24,Gi3/26,Gi3/27,Gi3/36,Gi3/39

                                Gi3/41,Gi3/42,Gi3/43,Gi3/44,Gi3/45,Gi5/1

                                Gi5/2,Gi5/3,Gi5/4,Gi5/5,Gi5/6,Gi5/7,Gi5/8

                                Gi5/9,Gi5/10,Gi5/11,Gi5/12,Gi5/13,Gi5/14

                                Gi5/16,Gi5/17,Gi5/19,Gi5/20,Gi5/21,Gi5/22

                                Gi5/23,Gi5/26,Gi5/28,Gi5/29,Gi5/31,Gi5/32

                                Gi5/33,Gi5/34,Gi5/35,Gi5/36,Gi5/37,Gi5/38

                                Gi5/39,Gi5/40,Gi5/41,Gi5/43,Gi5/45,Gi5/47

600    ffff.ffff.ffff   system Gi2/4,Gi2/6,Gi3/1,Gi3/2,Gi3/3,Gi3/4,Gi3/5

                                Gi3/8,Gi3/9,Gi3/10,Gi3/11,Gi3/12,Gi3/14,Gi3/16

                                Gi3/17,Gi3/18,Gi3/19,Gi3/20,Gi3/21,Gi3/22

                                Gi3/23,Gi3/24,Gi3/26,Gi3/27,Gi3/36,Gi3/39

                                Gi3/41,Gi3/42,Gi3/43,Gi3/44,Gi3/45,Gi5/1

                                Gi5/2,Gi5/3,Gi5/4,Gi5/5,Gi5/6,Gi5/7,Gi5/8

                                Gi5/9,Gi5/10,Gi5/11,Gi5/12,Gi5/13,Gi5/14

                                Gi5/16,Gi5/17,Gi5/19,Gi5/20,Gi5/21,Gi5/22

                                Gi5/23,Gi5/26,Gi5/28,Gi5/29,Gi5/31,Gi5/32

                                Gi5/33,Gi5/34,Gi5/35,Gi5/36,Gi5/37,Gi5/38

                                Gi5/39,Gi5/40,Gi5/41,Gi5/43,Gi5/45,Gi5/47

                                Switch

Why cisco WS-C4506-E Switches High CPU???

The switch you captured the above commands on is the root bridge for the spanning tree, and the switch connected to interface gi3/11 is the device generating the Topology Change Notification (TCN) and then sending to the root bridge.

Can you login to the downstream switch that is connected to interface gi3/11? If so then run similar commands on that switch and see which port is causing the topology changes. It may be that you have a port that is continually changing state.

If it's an access switch, then changing the port type to an edge port i.e., enabling portfast, will stop the TCN being generated.

Regards

New Member

Why cisco WS-C4506-E Switches High CPU???

Thank you, I try.

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