Cisco Cisco Packet Data Interworking Function (PDIF)
SGSN PSP Configuration Mode Commands
sctp-alpha ▀
Command Line Interface Reference, StarOS Release 17 ▄
8489
sctp-alpha
This stream control transmission protocol (SCTP) retransmission time out (RTO) parameter defines the RTO-Alpha
value.
value.
Product
SGSN
Privilege
Security Administrator, Administrator
Mode
Exec > Global Configuration > SS7 Routing Domain Configuration > Peer-Server Configuration > PSP Configuration
configure > ss7-routing-domain routing_domain_id variant variant_type > peer-server id id
> psp instance psp_instance
> psp instance psp_instance
Entering the above command sequence results in the following prompt:
[local]host_name(config-ss7-rd-ss7rd_id-ps-peer-server_id-psp-psp_instance)#
Syntax
sctp-alpha value
default sctp-alpha
value
Defines a percentage (%) that represents the RTO portion of the round-trip time (RTT) calculation. This
percentage value must be an integer between 0 and 65535.
percentage value must be an integer between 0 and 65535.
default
Resets the
sctp-alpha
to the default value of 5%.
Usage
sctp-alpha
is used in conjunction with other commands, such as the
sctp-beta
command, to determine
the round-trip time (RTT) calculations. The Alpha parameter is used to manage load balancing within the SS7
environment for multi-homed peers.
environment for multi-homed peers.
Important:
Before using this command to set a value or reset the default, you must disassociate the PSP instance
with the
no associate
command. When you have modified your configuratioin with this command, then use the
associate
command to setup a new ASP association.
Example
Set the SCTP RTO-Alpha value to
256%
of the RTT calculation:
sctp-alpha 256