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Message: 4
Date: Tue, 02 Jun 2009 00:48:56 +0200
From: Alan DeKok <[email protected]>
Subject: Re: Building a test tool
To: FreeRadius users mailing list
<[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
Vinit Karandikar wrote:
Not sure how radclient will help, Tim.
Based on my limited exposure, I get the impression that I can use
radclient to simulate 1 network element (like the PDSN).
I'm trying to simulate 10 different ones simultaneously.
So... run 10 copies of radclient.
That requires a separate manual setup for each of 50 test cases which is
bound to be error prone.
So if I could run 10 copies of radclient in one process (each in a
different thread for example), I can write code to co-ordinate what each
thread should do for each test case.
As mentioned in my initial email, I need the tool to simulate the PDSN,
the Pre-Paid Server and hosts of other network elements (possibly 10
such like the Foreign AAA, the Carrier Exchange and so on...)
What do those do? Send RADIUS packets? If so, radclient can likely
emulate them.
Some of them receive RADIUS packets and send responses (acting as
servers). Others initiate the traffic (acting as clients).
Can radclient act as a server ?
Am I underestimating what the radclient can do ?
It's not clear what you want out of a RADIUS client.
radclient simulates a RADIUS client by sending packets, and looking
for responses. If you need different functionality, you need to first
define what that functionality is.
Fair enough. Here are 2 cases that describe the functionality that need
a radclient-like network element simulation.
Hope this illustrates the functionality I mentioned as desired in my
original email.
In BOTH cases, the AAA server is expected to forward RADIUS requests to
a different network element and it behooves a test application to see
both ends.
In Case 1, the AAA server proxies the Disconnect Request to a different
network element based on the location of the subscriber.
In Case 2, the AAA server proxies the Access Requests from different
network elements to another network element
Case 1:
=======
Mother Ship AAA PDSN
(new) PDSN (old)
| |
| |
| | (1) Access-Request
| |
|
|<----------------------------| |
|(2) Access-Request |
| |
|<----------------------------|
| |
|(3) Access-Accept |
| |
|---------------------------->|
| |
| |(4) Access-Accept
| |
|
|---------------------------->| |
| |
| |
| | Accounting pieces skipped
| |
| |
| |
|(5) Disconnect Request |
| |
|---------------------------->|
| |
| |(6) Disconnect Request
| |
|
|---------------------------------------------------------->|
| |(7) Disconnect ACK
| |
|
|<----------------------------------------------------------|
|(8) Disconnect ACK |
| |
|<----------------------------|
| |
| |
| |
| | Accounting pieces skipped
| |
| | again
| |
| |
| |
OR
==
Case 2:
=======
Mother Ship AAA
PDSN HA
| |
| |
| | (1) Access-Request
| |
|
|<----------------------------| |
|(2) Access-Request |
| |
|<----------------------------|
| |
|(3) Access-Accept |
| |
|---------------------------->|
| |
| |(4) Access-Accept
| |
|
|---------------------------->| |
| |
| |
| |
PDSN communication with HA skipped
| |
| |
| | (5) Access-Request
| |
| | related to above accept
| |
| | in order to get more info
| |
|
|<----------------------------------------------------------|
|(6) Access-Request |
| |
|<----------------------------|
| |
|(7) Access-Accept |
| |
|---------------------------->|
| |
| |(8) Access-Accept
| |
|
|---------------------------------------------------------->|
| |
| |
| | Accounting pieces skipped
| |
| | yet again
| |
| |
| |
The point once again is just to ask if
a) there is already a tool that can simulate multiple network elements
and co-ordinate between them to know when to expect a packet and when to
initiate traffic
b) there is re-usable software that I can beat into shape to do such a
thing.
Thanks again,
-Vinit
Alan DeKok.
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