Subject: [AAA-WG]: Redirect host

From: <[email-masked]>
Date: Thu, 20 Feb 2003 17:24:14 +0200

Hi,

Sorry to raise this issue so late and at a wrong time.

Description of issue : Redirect-host AVP
Submitter name: Ghadiyaram Venkata Kishore
Submitter email address: [email-masked] 
Date first submitted: 20-02-2003
Document: base 
Comment type: T & E
Priority: 1
Rationale/Explanation of issue: 

1. Redirected-host, Redirected-Host-Usage and Redirected-Host-Cache-Time are used instead of Redirect-Host, Redirect-Host-Usage and Redirect-Host-Cache-Time in sections 8.3.2 and 8.5.2 where RAA and ASA messages are defined respectively.

2. Since DiameterIdentity is FQDN can the identity of the server be derived from its DiameterURI? If yes please ignore the following text in the message.
Redirect-host AVP is of type DiameterURI, which tells the transport information of the server to be contacted, but not the identity of the server. The identity of the server is required, to know whether a Diameter connection already exists between the client and the server. With the current specification during redirection, the client is provided with the DiameterURI of the server, and the client has to initiate a capabilities-exchange with the server. If the connection with the server already exists, it rejects the connection and the message could not be forwarded.

Proposed change :
Change Redirect-host type to Gouped as follows.

      Redirect-host ::= < AVP Header: 292 >
                     { Redirect-Identity }
                     { Redirect-URI }

Redirect-Identity - The server identity of type DiameterIdentity.
Redirect-URI - The URI of the server of type DiameterURI.