Lawful Intercept
The Lawful Intercept (LI) feature enables law enforcement agencies (LEAs) to intercept subscriber communications. The LI functionality provides the network operator the capability to intercept control and data messages of the targeted mobile users. To invoke this support, the LEA requests the network operator to start the interception of a particular mobile user. Legal approvals support this request.
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Lawful Intercept (LI) tap should be configured/enabled on all the racks. If LI configuration fails on one rack, LEA should re-configure it so that for a given subscriber tap is enabled on all the racks.
NoteLI tap configuration is not synchronized across racks.
Hence, LI tap configuration is mandatory on all the racks.
For more information on LI tap configuration, contact your Cisco Technical Representative.
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GR instance awareness is applicable for lawful-intercept src-address only.
Example:
lawful-intercept instance 1 src-addr 209.165.200.225
OR
lawful-intercept instance 1 src-addr 209.165.200.225
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show
commands are not instance-aware. It shows all the taps configured in a given cluster.For more information on LI
show
commands, contact your Cisco Technical Representative. -
In case all GR instances are in Standby state in a cluster and active LI tap fails with CLI message Rack is in standby mode, Active Tap is not allowed. Try camp on, configure camp-on tap for the same subscriber.