Cisco Cisco ASR 5000
SGSN Support for Peer-Server Blocking
Configuring Peer-Server Blocking ▀
SGSN Administration Guide, StarOS Release 18 ▄
Configuring Peer-Server Blocking
The following command is used to configure the Peer-Server Blocking feature:
config
ss7-routing-domain routing_domain_id variant variant_type
peer-server id id
psp instance psp_instance
[no] shutdown
exit
Notes:
On configuring
shutdown
, the PSP is brought down via a SCTP Shutdown procedure (if association is already
ESTABLISHED) or Abort (any other association state) and it is marked LOCKED. The SGSN does not initiate
any messages towards the peer and any message from the peer will be responded with a SCTP Abort, when the
PSP is in a LOCKED state.
any messages towards the peer and any message from the peer will be responded with a SCTP Abort, when the
PSP is in a LOCKED state.
On configuring
no shutdown
, the PSP is marked unlocked and the SGSN initiates an association establishment
towards the peer. This is the default configuration for a PSP. The default is
no shutdown
.
Listed below are the error codes added to support the Peer-Server blocking feature:
Once the CLI is configured if the operator tries to re-configure the same CLI again, a CLI failure is displayed.
This suppresses the Link Manager error logs while trying to push same configuration twice.
The error code displayed is:
Failure: PSP: Re-configuring same value
During an ongoing shutdown procedure if the command
no shutdown
is executed, the execution of the
command will be unsuccessful and a CLI failure error message is displayed.
The error code displayed is:
Cannot unlock PSP during ongoing shutdown procedure
This ensures that the shutdown procedure is graceful. The command
no shutdown
can be configured only
when there is no ongoing shutdown procedure.
Verifying the Peer-Server Blocking Configuration
Use the following show command to verify the Peer-Server Blocking configuration:
show ss7-routing-domain num sctp asp instance num status peer-server id num peer-server-
process instance num
process instance num
The field
Association State
is displayed as
LOCKED
when the PSP is locked via the
shutdown
CLI.