7500 Slave RSP high CPU utilization problem

Unanswered Question
Dec 11th, 2008

hello guyes

I have a problem about C-7513 Slave RSP high CPU utilization

I've configured for redundancy RSP configuration(SSO, RPR+ )

Router operated correctly.

But I can find HIgh CPU utiliztion on slave RSP(Standby) by 'IPC Slave CBus Process'

Active RSP CPU utilization is normal(0%).

So I want to fix this problem. but i can't find any solution.

somebody help me.

here is what i tried

1) changied IOS version,

- current IOS Version is RSP-K91PV-M Version 12.2(25)S15,

and I tried 12.4.23 (SP/VIP), 12.3.26(SP/VIP)

2) changeed redundancy mode

- RPR+, SSO(SSO mode supports only 12.2(25)S15 release

current RPR+ mode.

3) swaped RSP module

- swaped slot 6 with slot 7 (both are RSP 8)

here is slave RSP output.

#sh proc cp so

CPU utilization for five seconds: 96%/0%; one minute: 95%; five minutes: 95%

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

41 5543432 62852623 88 96.39% 95.67% 95.75% 0 IPC Slave CBus p

6 3548 684 5187 0.31% 0.06% 0.05% 0 Check heaps

1 0 5 0 0.00% 0.00% 0.00% 0 Chunk Manager

2 0 1160 0 0.00% 0.00% 0.00% 0 Load Meter

3 168 306 549 0.00% 0.03% 0.00% 0 Exec

4 0 26 0 0.00% 0.00% 0.00% 0 Retransmission o

5 4 44 90 0.00% 0.00% 0.00% 0 IPC ISSU Receive

7 0 1 0 0.00% 0.00% 0.00% 0 Pool Manager

8 0 2 0 0.00% 0.00% 0.00% 0 Timers

9 0 2 0 0.00% 0.00% 0.00% 0 Serial Backgroun

10 0 1 0 0.00% 0.00% 0.00% 0 Policy Manager

11 0 5807 0 0.00% 0.00% 0.00% 0 OIR Handler

12 0 1139 0 0.00% 0.00% 0.00% 0 ALARM_TRIGGER_SC

13 0 97 0 0.00% 0.00% 0.00% 0 IPC Dynamic Cach

#sh redundancy

Redundant System Information :

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

Available system uptime = 1 hour, 41 minutes

Switchovers system experienced = 0

Hardware Mode = Duplex

Configured Redundancy Mode = rpr-plus

Operating Redundancy Mode = rpr-plus

Maintenance Mode = Disabled

Communications = Up

Current Processor Information :

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

Standby Location = slot 7

Current Software state = STANDBY COLD-CONFIG

Uptime in current state = 1 hour, 36 minutes

Image Version = Cisco IOS Software, RSP Software (RSP-K91PV-M), Version 12.2(25)S15, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2007 by Cisco Systems, Inc.

Compiled Fri 07-Dec-07 21:16 by tinhuang

BOOT = slot0:rsp-k91pv-mz.122-25.S15.bin,12;

CONFIG_FILE =

BOOTLDR = bootflash:rsp-boot-mz.124-23.bin

Configuration register = 0x102

Peer (slot: 6, state: ACTIVE) information is not available because this is the standby processor

I have this problem too.
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Giuseppe Larosa Fri, 12/12/2008 - 02:42

Hello ChangShik,

first of all verify that you have only VIP linecards in the chassis and no old cpuless Interface processors

see

RPR+ operates only in a system with VIPs as the line cards. Systems with legacy IPs default to RPR mode. Up to two legacy IPs can be supported by RPR+ if the service single-slot-reload-enable command is configured.

http://www.cisco.com/en/US/docs/ios/12_3t/12_3t7/feature/guide/gt_rpr2.html#wp1057189

Legacy IPs default to RPR. To allow RPR+ for VIPs when up to two legacy IPs exist in the router, you must configure the service single-slot-reload-enable command. If you do not enable the service single-slot-reload-enable command or if you have more than two legacy IPs, all the line cards are reloaded.

Hope to help

Giuseppe

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