Cisco Cisco ASR 5000
SGSN Service Configuration Procedures
Configuring an SS7 Routing Domain ▀
SGSN Administration Guide, StarOS Release 18 ▄
Configuring an SS7 Routing Domain
The SGSN supports both SS7- and IP-based routing. IP-based routing is provided through the use of contexts. SS7
routing is facilitated through the configuration and use of SS7 routing domains. SS7 routing domains group SS7-related
configuration parameters. Depending on the SS7 signaling method, an SS7 routing domain may be configured with one
of the following:
routing is facilitated through the configuration and use of SS7 routing domains. SS7 routing domains group SS7-related
configuration parameters. Depending on the SS7 signaling method, an SS7 routing domain may be configured with one
of the following:
Linksets: Used for broadband SS7 signaling, linksets are comprised of link ids that specify point codes for
SCCP endpoints. It is important to note that SCCP endpoints are further defined through the configuration of
SCCP Networks (refer to Configuring an SCCP Network) which are associated with the SS7 routing domain in
which the linkset is configured.
SCCP Networks (refer to Configuring an SCCP Network) which are associated with the SS7 routing domain in
which the linkset is configured.
Application Server Processes (ASPs) / Peer Server Processes (PSPs): Used for IP (SIGTRAN), M3UA ASPs
and PSPs dictate the IP address and port information used to facilitate communication between network
endpoints. ASPs refer to the local endpoints.
endpoints. ASPs refer to the local endpoints.
Configuring an SS7 Routing Domain to Support Broadband SS7 Signaling
Step 1
In global configuration mode, create a new SS7 routing domain, give it a unique ID and specify the network variant that
SS7 communications through this routing domain use.
SS7 communications through this routing domain use.
Step 2
In SS7 routing domain configuration mode, configure the MTP-3 sub-service field (SSF).
Step 3
Create an SS7 linkset with a unique ID.
Step 4
In linkset configuration mode, specify the self point code - this is the point code of the SGSN.
Step 5
Specify the adjacent point code to communicate with another SS7 node, e.g., an RNC.
Step 6
Configure individual links, identified with link IDs.
Step 7
In link configuration mode, specify the MTP3 link priority.
Step 8
Specify the Signaling Link Code (SLC) for this link. This must be unique to this link within the current linkset. Note
that SLCs must match, one-to-one, with those defined for the peer nodes.
that SLCs must match, one-to-one, with those defined for the peer nodes.
Step 9
Configure this link to use either passive or active arbitration.
Step 10 In SS7 routing domain configuration mode, configure SS7 routes by specifying destination point codes and associated
linkset IDs.
Example Configuration
configure
ss7-routing-domain <id> variant <variant>
ssf <subsvc>
linkset id <id>