Cisco Cisco Packet Data Interworking Function (PDIF)
SGTP Service Configuration Mode Commands
▀ gtpc
▄ Command Line Interface Reference, StarOS Release 16
8384
dns-sgsn context context_name
Identify the context where the DNS client is configured to send the DNS query to get the peer SGSN address.
If nothing is configured, the system assumes the DNS client is configured in the same context where the
SGTP service is configured.
If nothing is configured, the system assumes the DNS client is configured in the same context where the
SGTP service is configured.
context_name
: Enter a string of 1 to 79 alphanumeric characters to identify the context.
There is a dns-sgsn command option in the call-control profile, which, if configured, would override the
configuration in this SGTP service configuration.
configuration in this SGTP service configuration.
echo-interval interval_seconds
Configures the duration between echoes.
seconds
Enter an integer from 0 through 3600.
Default: 60
echo-retransmission { exponential-backoff [ [ min-timeout timeout_seconds ] [
smooth-factor smooth_factor ] + ] | timeout timeout_seconds }
smooth-factor smooth_factor ] + ] | timeout timeout_seconds }
Configures the retransmission parameters for GTP-C echo messages. The operator can choose to use either an
“exponential-backoff” timers or a “fixed-retransmission” timer:
“exponential-backoff” timers or a “fixed-retransmission” timer:
The
exponential-backoff
timer uses an exponential backoff algorithm to better manage the GTP-C
path during periods of network congestion and to perform exponential-backoff echo timing. The
exponential-backoff timer uses a calculated round-trip time (RTT), as well as a configurable factor
or a multiplier to be applied to the RTT statistic. Different paths can each have a different RTT, so
the exponential-backoff timer can be configured for multiple paths. One or both of the following
parameters can be configured to refine the exponential-backoff timer configuration:
exponential-backoff timer uses a calculated round-trip time (RTT), as well as a configurable factor
or a multiplier to be applied to the RTT statistic. Different paths can each have a different RTT, so
the exponential-backoff timer can be configured for multiple paths. One or both of the following
parameters can be configured to refine the exponential-backoff timer configuration:
min-timeout timeout_seconds
: Specifies the minimum time period (in seconds) for the
exponential-backoff echo timer. If the RTT multiplied by the smooth factor is less than this
minimum timeout value, then the node uses the value set with this keyword. Range is 1-20.
Default is 5.
minimum timeout value, then the node uses the value set with this keyword. Range is 1-20.
Default is 5.
smooth-factor smooth_factor
: Specifies the multiplier that the exponential-backoff echo
timer uses when calculating the time to wait to send retries, when the gateway has not
received a response from the peer within value defined for the path echo interval. Range is
1-5. Default is 2.
received a response from the peer within value defined for the path echo interval. Range is
1-5. Default is 2.
timeout timeout_seconds
: Configures the number of seconds for the fixed retransmission timeout
value for GTP-C echo messages. Range from 1 to 20. Default is 5.
guard-interval interval_seconds
Configures the interval (in seconds) for which the SGTP maintains responses sent to gateway. This optimizes
the handling of retransmitted messages. This value should be configured to be greater than the gateway's
configuration for max-retries multiple by retry-interval.
the handling of retransmitted messages. This value should be configured to be greater than the gateway's
configuration for max-retries multiple by retry-interval.
interval_seconds
: Enter an integer from 10 to 3600.
Default: 100
ignore response-port-validation
This keyword instructs the gateway to ignore the response port validation.
For the gateway to process incoming GTP responses to an incorrect port, this keyword must be entered, and
the same
For the gateway to process incoming GTP responses to an incorrect port, this keyword must be entered, and
the same
bind address
must be configured for GTPC and GTPU in the SGTP service.
Default: Disabled. To reset the default for this parameter, you must enter the following command:
no gtpc
ignore response-port-validation
.