Cisco ASR 5000 Series Administration Manual page 154

▀ Using the System as Both a GGSN/FA and an HA
Required Information
IP address pool name(s)
IP pool addresses
FA Service Configuration
FA service name
UDP port number for
Mobile IP traffic
Security Parameter Index
(indices) Information
FA agent advertisement
lifetime
Number of allowable
unanswered FA
advertisements
Maximum mobile-
requested registration
lifetime allowed
Registration reply timeout
Number of simultaneous
registrations
▄ Cisco ASR 5000 Series Gateway GPRS Support Node Administration Guide
Description
If IP address pools will be configured in the destination context(s), names or identifiers will be
needed for them. The pool name can be between 1 and 31 alpha and/or numeric characters and is
case sensitive.
An initial address and a subnet, or a starting address and an ending address, are required for each
configured pool. The pool will then consist of every possible address within the subnet, or all
addresses from the starting address to the ending address.
The pool can be configured as public, private, or static.
This is an identification string between 1 and 63 characters (alpha and/or numeric) by which the FA
service will be recognized by the system
.Multiple names are needed if multiple FA services will be used.
FA services are configured in the destination context.
Specifies the port used by the FA service and the HA for communications. The UDP port number
can be any integer value between 1 and 65535. The default value is 434.
HA IP address: Specifies the IP address of the HAs with which the FA service communicates. The
FA service allows the creation of a security profile that can be associated with a particular HA.
Index: Specifies the shared SPI between the FA service and a particular HA. The SPI can be
configured to any integer value between 256 and 4294967295.Multiple SPIs can be configured if the
FA service is to communicate with multiple HAs.
Secrets: Specifies the shared SPI secret between the FA service and the HA. The secret can be
between 1 and 127 characters (alpha and/or numeric).An SPI secret is required for each SPI
configured.
Hash-algorithm: Specifies the algorithm used to hash the SPI and SPI secret. The possible
algorithms that can be configured are MD5 per RFC 1321 and keyed-MD5 per RFC 2002. The
default is hmac-md5.A hash-algorithm is required for each SPI configured.
Specifies the time (in seconds) that an FA agent advertisement remains valid in the absence of
further advertisements.
The time can be configured to any integer value between 1 and 65535. The default is 9000.
Specifies the number of unanswered agent advertisements that the FA service will allow during call
setup before it will reject the session.
The number can be any integer value between 1 and 65535. The default is 5.
Specifies the longest registration lifetime that the FA service will allow in any Registration Request
message from the mobile node.
The lifetime is expressed in seconds and can be configured between 1 and 65534. An infinite
registration lifetime can be configured by disabling the timer. The default is 600 seconds.
Specifies the amount of time that the FA service will wait for a Registration Reply from an HA.
The time is measured in seconds and can be configured to any integer value between 1 and 65535.
The default is 7.
Specifies the number of simultaneous Mobile IP sessions that will be supported for a single
subscriber.
The maximum number of sessions is 3. The default is 1.
NOTE: The system will only support multiple Mobile IP sessions per subscriber if the subscriber‟s
mobile node has a static IP address.
GGSN and Mobile IP Service in a Single System Configuration Example
OL-22944-02