# RoHC Profile Common Options Configuration Mode Commands

The RoHC Profile Common Options Configuration Mode is used to set timers that, upon expiration, release robust header compression contexts.

IMPORTANT:

The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).
delay-release-hc-context-timer

Sets a delay in releasing Robust Header Compression (RoHC) contexts allowing for context continuation during intra-gateway handoffs.
Platform:

ASR 5000

ASR 5500
Product:

HSGW, PDSN
Privilege:

Administrator
Syntax

    delay-release-hc-context-timer secondsno delay-release-hc-context-timer

no

Removes previously configured value for this command. No value disables the feature.
seconds

Specifies the number of seconds the system delays before releasing the header compression context as an integer from 0 to 65535.
Usage:

Use this command to set a delay in releasing a header compression context. THis command is necessary when employing RoHC and mobility. Typically, when an RP connection is released, the header compression context is also released immediately. However, in mobility situations, such as intra-PDSN handoffs, the header compression context should be preserved. Adding a delay to cover the handoff time allows the context to be maintained.

A header compression context contains the compression/decompression configuration and statistics for the session.
Example:
The following command sets the header compression release delay to 20 seconds:

    delay-release-hc-context-timer 20

end

Exits the current configuration mode and returns to the Exec mode.
Product:

All
Privilege:

Security Administrator, Administrator
Syntax

    end

Usage:

Use this command to return to the Exec mode.
exit

Exits the current mode and returns to the parent configuration mode.
Product:

All
Privilege:

Security Administrator, Administrator
Syntax

    exit

Usage:

Use this command to return to the parent configuration mode.
inactive-traffic-release-hc-context-timer

Sets an inactivity timer that is checked when inactivity is detected on an SO67 A10 bearer connection with negotiated RoHC parameters. When this timer expires, the header compression context is released.
Platform:

ASR 5000

ASR 5500
Product:

HSGW, PDSN
Privilege:

Administrator
Syntax

    inactive-traffic-release-hc-context-timer secondsno inactive-traffic-release-hc-context-timer

no

Removes previously configured value for this command. No value disables the feature.
seconds

Specifies the time, in seconds, the system waits for activity on the bearer channel before releasing the header compression context as an integer from 1 through 65535.
Usage:

Use this command to set a timer that is started upon detecting inactivity on the bearer channel. Upon expiry, the header compression context is released. Enable this feature for more efficient memory utilization.
Example:
The following command sets the bearer channel inactivity timer to 60 seconds:

    inactive-traffic-release-hc-context-timer 60