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

topnewinfo · ‎01-21-2014

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

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

Steve Fuller · ‎01-22-2014

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

topnewinfo · ‎01-23-2014

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

Steve Fuller · ‎01-23-2014

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

topnewinfo · ‎01-24-2014

Thank you, I try.