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Cisco Bug: CSCta76335 - Data Throughput Performance impacted when Lawful Intercept is enabled.

Last Modified

Jul 21, 2010

Products (1)

  • Cisco 7600 Gateway GPRS Support Node

Known Affected Releases

12.4(22)YE

Description (partial)

Symptom:
Data Throughtput Performance for all packet sizes will be impacted when 
PDP's on GGSN are tapped for Lawful Intercept. 

Conditions:
Each of the GGSN Processor on the SAMI card were configured with 500 
APN's and one Vrf per APN and 64K PDP's session, rendering a total of 384K
PDP sessions per GGSN Card. With this configuration and without LI enable 
the data throughput for a 64byte size frame was 1.24 Million Packets Per 
Second at No-Drop-Rate.

When 1% of 384K PDP session per GGSN SAMI Card was tapped for Lawful 
Intercept the data throughput for a 64byte size frame was 648K Packets Per
Second at No-Drop-Rate.
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