Cisco Cisco Packet Data Gateway (PDG)
LAC Service Configuration Mode Commands
▀ snoop framed-ip-address
▄ Command Line Interface Reference, StarOS Release 16
6698
snoop framed-ip-address
When enabled, this feature allows the LAC to detect IP Control Protocol (IPCP) packets exchanged between the mobile
node and the LNS and extract the framed-ip-address assigned to the mobile node. The address will be reported in
accounting start/stop messages and displayed for subscriber sessions.
node and the LNS and extract the framed-ip-address assigned to the mobile node. The address will be reported in
accounting start/stop messages and displayed for subscriber sessions.
Product
GGSN
PDSN
P-GW
SAEGW
Privilege
Security Administrator, Administrator
Mode
Exec > Global Configuration > Context Configuration > LAC Service Configuration
configure > context context_name > lac-service service_name
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-lac-service)#
Syntax
[ default | no ] snoop framed-ip-address
default
Disabled.
no
Disables the feature. Accounting start/stop will occur before the PPP session is established and the framed IP
address field will be reported as 0.0.0.0.
address field will be reported as 0.0.0.0.
Usage
This feature is available to address simple IP roaming scenarios. If this feature is enabled, the Accounting
Start will be sent only after the framed-ip-address is detected. If the framed-ip-address is not detected within
16 seconds, an Accounting Start will be sent for the session with the 0.0.0.0 address. If the session is
disconnected during the detection attempt, Accounting Start/Stop will be sent for the session. If the session
renegotiates IPCP, an Accounting Stop will be generated with a framed-ip-address from the old session, and
an Accounting Start will be generated with an IP address for the new session. IPv6 address detection is not
supported.
Start will be sent only after the framed-ip-address is detected. If the framed-ip-address is not detected within
16 seconds, an Accounting Start will be sent for the session with the 0.0.0.0 address. If the session is
disconnected during the detection attempt, Accounting Start/Stop will be sent for the session. If the session
renegotiates IPCP, an Accounting Stop will be generated with a framed-ip-address from the old session, and
an Accounting Start will be generated with an IP address for the new session. IPv6 address detection is not
supported.
Important:
When this feature is enabled and the show subscribers all command is invoked, the framed-IP-
address is displayed for the PDSN Simple IP subscriber in the output display.