Optional Destination Context Configuration - Cisco ASR 5000 Series Administration Manual

▀ Example 1: Mobile IP Support Using the System as a GGSN/FA
Required Information
FA agent advertisement
lifetime
Number of allowable
unanswered FA
advertisements
Maximum mobile-
requested registration
lifetime allowed
Registration reply timeout
Number of simultaneous
registrations
Mobile node re-registration
requirements
Maximum registration
lifetime
Maximum number of
simultaneous bindings

Optional Destination Context Configuration

The following table lists the information required to configure the optional destination context. As discussed previously,
this context is required if: 1) reverse tunneling is disabled in the FA service, or 2) if access control lists (ACLs) are used
Important:
configuration would not be required.
▄ Cisco ASR 5000 Series Gateway GPRS Support Node Administration Guide
Description
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.
Specifies how the system should handle authentication for mobile node re-registrations.
The FA service can be configured to always require authentication or not. If not, the initial
registration and de-registration will still be handled normally.
Specifies the longest registration lifetime that the HA service will allow in any Registration Request
message from the mobile node.
The time is measured in seconds and can be configured to any integer value between 1 and 65535.
An infinite registration lifetime can also be configured by disabling the timer. The default is 600.
Specifies the maximum number of "care-of" addresses that can simultaneously be bound for the
same user as identified by NAI and Home address.
The number can be configured to any integer value between 1 and 5. The default is 3.
If ACLs are used, the destination context would only consist of the ACL configuration. Interface
Mobile IP Configuration Examples
OL-22944-02