Guest

Cisco SCE 1000 Series Service Control Engine

Field Notice: FN - 62655 - SCE SCAS BB - Failure to Apply Policy - SCE Agent Connections are Very Slow


January 23, 2007

NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.


Products Affected

Products Affected

Comments

SCE SCAS BB - 3.0.1

Service Control Application System

SCE SCAS BB - 3.0.3

Service Control Application System

SCE SCAS BB - 3.0.4

Service Control Application System

Problem Description

The management agent in the SCE runs a thread that is responsible for performing different operations if the SM/SCE subscriber API connections are down for more than a configurable timeout. The management agent fails to kill this thread at the end of its run; thus, when there is a high number of disconnections, a large number of threads are created and the free memory of the JVM is reduced to a point where the garbage collection takes a significant time and causes performance degradation.

Background

SCE platform runs Java-based management agent which is responsible for PRPC connections between the SCE and SM / SCE Subscriber API / SCA-BB site manager / serveconf application.

Problem Symptoms

  1. Failure to apply application configuration - GUI does not finish the apply and gets disconnected

  2. Reduction of logon operations rate on the SM/SCE subscriber API. This can be verified by running netstat -a command on the SM/SCE API machine. The TCP window for the SCE experiencing the described problem is decreased to 0. See following example:

    Local Address Remote Address Swind Send-Q Rwind Recv-Q State 
    ... 
    sm01.58305 215.193.18.81.14374 40960 0 49664 0 ESTABLISHED 
    sm01.58306 215.193.18.82.14374 0 0 49664 0 ESTABLISHED
    

Workaround/Solution

Solution:

SCE 3.0.5 release contains a solution to this problem.

Workaround:

Possible workaround procedure:

  1. Run the following CLI in order to shutdown the agent:

    SCE2000(config)#>no service management-agent
    
  2. Run the following command to verify the management agent is down:

    SCE2000(config)#>do show management-agent 
    management agent is disabled. 
    management agent is not active 
    management agent does not use any access-list.
    
  3. Run the following CLI in order to startup the agent:

    SCE2000(config)#>service management-agent
    
  4. Run the following command to verify the management agent is up:

    SCE2000(config)#>do show management-agent 
    management agent is enabled. 
    management agent is active, version: SCE Agent 3.0.3 Build 20 
    management agent does not use any access-list.
    

If one of the stages fails SCE reload is required.

DDTS

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DDTS

Description

CSCsf32818 (registered customers only)

Failure to apply policy - SCE agent connections are very slow.

Revision History

Revision

Date

Comment

1.0

23-Jan-2007

Initial Public Release

For More Information

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