Cisco Cisco ASR 5000
SGSN Service Configuration Procedures
▀ Configuring and Associating the Selection of an SGW for RAI (S4 Only, Optional)
▄ SGSN Administration Guide, StarOS Release 18
Configuring and Associating the Selection of an SGW for RAI
(S4 Only, Optional)
If operators wish to bypass DNS resolution of RAI FQDN for obtaining the S-GW address, the SGSN can select an S-
GW by performing a local configuration look-up for the current Routing Area Instance (RAI). This is accomplished by
configuring the TAI Management Database (tai-mgmt-db) of the SGSN to select an S-GW address and its associated
RAI. In addition, the TAI Management Database must be associated with the 2G and/or 3G services configured on the
SGSN. The TAI Management Database can also be associated with a call-control-profile for RAI-to-SGW address
mapping.
GW by performing a local configuration look-up for the current Routing Area Instance (RAI). This is accomplished by
configuring the TAI Management Database (tai-mgmt-db) of the SGSN to select an S-GW address and its associated
RAI. In addition, the TAI Management Database must be associated with the 2G and/or 3G services configured on the
SGSN. The TAI Management Database can also be associated with a call-control-profile for RAI-to-SGW address
mapping.
Use the following procedure to configure the selection of an SGW for RAI:
Step 1
Access Global Configuration Mode.
Step 2
Access LTE Policy Configuration Mode.
Step 3
Create a TAI Management Database and enter TAI Management Database Configuration Mode.
Step 4
Create a TAI Management Object and enter TAI Management Object Configuration Mode.
Step 5
Configure the RAI. Specify the RAI MCC, MNC, LAC and RAC values.
Step 6
Configure the SGW address serving the RAI. Specify the IPv4 address, the S5-to-S8 protocol as GTP, and the load
balancing Weight for this SGW. On the S4-SGSN, only GTP is supported as the protocol option.
balancing Weight for this SGW. On the S4-SGSN, only GTP is supported as the protocol option.
Step 7
Access SGSN Service Configuration Mode and associate the configured UTRAN (3G) service with the S-GW addresses
and their associated RAIs.
and their associated RAIs.
Step 8
Access GPRS Service Configuration Mode and associate the configured GERAN (2G) and service with the S-GW
addresses and their associated RAIs.
addresses and their associated RAIs.
Step 9
Optional. Associate the SGW address-to-RAI mapping with a call-control-profile.
Example Configuration
config
lte-policy
tai-mgmt-db <tai_mgmt_db_name>
tai-mgmt-ojb <obj_name>
rai mcc <mcc_value> mnc <mnc_value> lac <lac_value> rac <rac_value>
sgw-address <ipv4_addr> | <ipv6_addr> s5-s8-protocol gtp weight <number>
end
config