Cisco Cisco Packet Data Gateway (PDG)
GTPP Accounting Overview
GTPP Messages ▀
GTPP Interface Administration and Reference, StarOS Release 17 ▄
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Figure 3.
Address of Recommended Node IE
The format definition for the Address of Recommended Node information element is the same as the format of the
source and destination address of the IP packet that transports the GTPP messages. The optional Alternative Address of
Recommended Node IE can be used in the Node Alive Request if the message sender wants to advertise an IP address
that is different from the node address format. This way both the IPv4 and IPv6 node address formats can be supported
simultaneously in the messaging, regardless of whether IPv4 or IPv6 is used in the underlying transport.
source and destination address of the IP packet that transports the GTPP messages. The optional Alternative Address of
Recommended Node IE can be used in the Node Alive Request if the message sender wants to advertise an IP address
that is different from the node address format. This way both the IPv4 and IPv6 node address formats can be supported
simultaneously in the messaging, regardless of whether IPv4 or IPv6 is used in the underlying transport.
The optional Private Extension contains vendor- or operator- specific information.
Redirection Response
A Redirection Response message shall be sent as a response of a received Redirection Request.
The information elements of this message are listed in the following table.
Table 6. Redirection Response Message
Information Element Presence Requirement
Cause
Mandatory
Private Extension
Optional
Possible Cause values are:
Request Accepted
No resources available
Service not supported
System failure
Mandatory IE incorrect
Mandatory IE missing
Optional IE incorrect
Invalid message format