Cisco Cisco ASR 5000
Call Control Profile Configuration Mode
sgsn-address ▀
Command Line Interface Reference, StarOS Release 18 ▄
2101
Important:
Typically, use of this keyword is optional. However, it must be included in the command when Flex
(SGSN-Pooling) is implemented.
prefer { fallback-for-dns | local }
Indicates the preferred source of the address to be used.
fallback-for-dns
- Instructs the SGSN to perform a DNS query to get the IP address of the peer-
SGSN. If the DNS query fails, then the IP address configured with this command is used.
local
- instructs the system to use the local IP address configured with this command.
Important:
If the
prefer
command is used to change an existing sgsn-address configuration (with the same
LAC and RAC) from
fallback-for-dns
to
local
or from
local
to
fallback-for-dns
, the new setting
overwrites the previously configured setting for all interfaces.
address { ipv4 ip_address | ipv6 ip_address
}
Specifies the IP address of the peer SGSN. Currently, the IPv6 address option is not supported on the S4-
SGSN.
SGSN.
ipv4 ip_address
- specifies a valid address in IPv4 dotted-decimal notation.
ipv6
ip_address
-
Important:
The
ipv6
option is under development for future use and is not supported in
this release.
interface { gn | s16 }
interface
- optional. Specifies the interface type used for communicating with the peer SGSN. Must be one
of the following:
gn
specifies that communication will occur over the Gn interface with a peer SGSN configured for
2.5G, 3G, or dual access SGSN services.
s16
specifies that communication will occur over the S16 interface with a peer S4-SGSN.
Usage
Use this command to save time by avoiding DNS. This command enables a local mapping by setting the
peer-SGSN IP address to be used for inter-SGSN Attach and inter-SGSN-RAU. When configured, if the
SGSN receives a RAU or an Attach Request with a P-TMSI and an old-RAI that is not local, the SGSN
consults this table and uses the configured IP address instead of resolving via DNS. If this table is not
configured, then IP address resolution is done using DNS.
The MCC and MNC of the RAI are taken from the IMSI range configured in the operator policy and the LAC
and RAC are configured here in the call control profile configuration mode.
The
peer-SGSN IP address to be used for inter-SGSN Attach and inter-SGSN-RAU. When configured, if the
SGSN receives a RAU or an Attach Request with a P-TMSI and an old-RAI that is not local, the SGSN
consults this table and uses the configured IP address instead of resolving via DNS. If this table is not
configured, then IP address resolution is done using DNS.
The MCC and MNC of the RAI are taken from the IMSI range configured in the operator policy and the LAC
and RAC are configured here in the call control profile configuration mode.
The
sgsn-address
command differs from other Call Control Profile configuration mode commands in the
following ways:
Within the SGSN’s call logic, all other configuration elements defined with the other commands in this
mode are used after the IMSI is learnt. The configuration defined with this command is part of the
decision logic prior to the IMSI being known.
decision logic prior to the IMSI being known.