Quota in DCCA

Iliya Peregoudov iperegudov at cboss.ru
Fri May 18 07:39:12 CEST 2012

DCCA is the Diameter Credit-Control Application (RFC 4006). Freeradius 
does not support Diameter protocol. So you just can't pass Diameter AVPs 
(Grouped or whatever) using RADIUS attributes.

But realy you do not need to. GGSN should use RADIUS for AAA purposes 
(e.g., authentication, access authorization, maybe address allocation, 
and session accounting). As part of successful authorization RADIUS 
server should tell GGSN to turn on credit-control for the session. For 
example,  RADIUS server can return credit-control server 
address/name/realm to GGSN in Access-Accept.

After successful authorization GGSN will use Diameter CCA toward 

yagizozen wrote:
> Hello everyone,
> I am using DCCA in one of the systems. And I know that DCCA grant a quata
> when a request comes from GGSN. For Example, when a access request come from
> GGSN, DCCA rejects it depending on the AVPs OR accept the request and sends
> a predefined QUOTA to the GGSN so that after the user finish that quota, it
> returns and asks for more quota. When I take a snoop between GGSN and DCCA,
> I see a grouped AVP called "Multiple Services Credit Control" and inside
> this grouped AVP, it contains the quota and other information that is send
> to GGSN with the accept packet. 
> If I implement this grouped AVP to the radius Access-ACCEPT packet, does it
> work? The GGSN is the same. 
> Also can you help me about creating a GROUPED AVP?? sending a user-defined
> AVP is easy but how can I group more than one AVPs?
> Thank you very much.
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