Cisco Cisco Packet Data Gateway (PDG)
SGSN Changes in Release 16
▀ SGSN Enhancements for 16.0
▄ Release Change Reference, StarOS Release 16
542
Command Changes
gw-selection
The
gw-selection
command in the call control profile configuration mode is new for the SGSN. This command
configures the parameters controlling the gateway selection process for both the Gn/Gp-SGSN and the S4-SGSN.
configure
call-control-profile profile_name
gw-selection { { co-location | pgw weight | sgw weight | topology } [ weight [
prefer { pgw | sgw } ] ] }
prefer { pgw | sgw } ] ] }
remove gw-selection { co-location | pgw | sgw | topology }
end
Notes:
co-location enables the SGSN to select topologically closer P-GW and S-GW nodes, irrespective of the ‘topon’
or ‘topoff’ prefix being present in the hostname received in the results of the DNS query.
pgw weight enables the SGSN to apply load balancing during selection of P-GW nodes.
sgw weight enables the SGSN to apply load balancing during selection of S-GW nodes.
topology enables the SGSN to select topologically closer P-GW and S-GW nodes, only when ‘topon’ prefix is
present in the hostname received as part of the DNS query results.
weight enables load balancing during selection of a node. When topology is applicable, weight instructs the
SGSN to apply weight-based selection only on node pairs with the same degree and order.
prefer instructs the SGSN to consider weight values for preferred GW type (P-GW or S-GW) during the first
primary activation.
remove erases the GW selection configuration from the call control profile.
For command usage information, see the gw-selection information in the Call-Control Profile Configuration Mode
section of the Command Line Reference.
section of the Command Line Reference.
canonical-node-name
In order for the Gn/Gp-SGSN to support Topological Gateway Selection, the SGSN’s canonical node name must be
defined in the SGSN’s configuration. (This is not needed for the S4-SGSN).
defined in the SGSN’s configuration. (This is not needed for the S4-SGSN).
configure
sgsn-global
canonical-node-name canonical_node_name
no canonical-node-name canonical_node_name
end
Notes: