Cisco Cisco Packet Data Gateway (PDG)
SGSN Changes in Release 16
▀ SGSN Enhancements for 16.2
▄ Release Change Reference, StarOS Release 16
474
Command Changes
sgw-address-resolution-mode
This command is introduced to specify the address resolution mode of the SGW address(s) configured in the LTE
Tracking Area Identifiers Management object for the TAI database. This command is applicable only for S4-SGSN.
Tracking Area Identifiers Management object for the TAI database. This command is applicable only for S4-SGSN.
configure
lte-policy
tai-mgmt-db db_name
tai-mgmt-obj obj_name
sgw-address-resolution-mode { fallback-for-dns | local }
end
Notes:
This command is used to specify the DNS query or local address resolution for this LTE TAI Management
Object. The addresses will be valid only for lac and rac defined under tai-mgmt-object.
By default the option
fallback-for-dns
is enabled.
address-resolution-mode
This command identifies the address resolution mode for an APN profile. This command is now supported for S4-
SGSN. In releases prior to 16.2, this command was supported only for Gn- SGSN.
SGSN. In releases prior to 16.2, this command was supported only for Gn- SGSN.
configure
apn-profile profile_name
address-resolution-mode { fallback-for-dns | local }
default address-resolution-mode
end
Notes:
The keyword
fallback-for-dns
instructs the system to try DNS resolution. If the DNS query fails, the SGSN
uses the locally configured addresses, if they have been configured. The pgw-address configured under apn-
profile will be treated as fallback for dns address and will used only after DNS failure.
profile will be treated as fallback for dns address and will used only after DNS failure.
This address will be used on DNS SNAPTR Failure except on Service parameter mismatch.
If pgw-address-resolution-mode fallback-for-dns is not configured then the gateway-address will be treated as
fallback for DNS address and UE will fallback to Gn-SGSN, if GPRS-Subscription is available.