Is there a way for a single request to be received by all pool members

To achieve this, You can synchronize all Anti-span server.

Hi Samir,

I'm not familiar with Anti-Spam server configuration, but as per our client the flow will be:

1. Client sends request
2. GGSN will send copy of Radius AVP to Anti-SPAM server for authentication
3. Client will then send the data(email)
4. Anti-spam server will validate the data based on the authentication.

Is this possible then?

Thanks! Ferdz

Hi Ferdz;

Not sure if I understand your use case correctly; however I recall a few years back having some success copying RADIUS accounting messages to multiple servers using the high speed logging function in irules. The basic rule is applied to a UDP virtual server which receives the message, and forwards copies of it to multiple destinations as required.

when CLIENT_ACCEPTED {

set pool_1 [HSL::open -proto UDP -pool blade_1] set pool_2 [HSL::open -proto UDP -pool blade_2] HSL::send $pool_1 [UDP::payload] HSL::send $pool_2 [UDP::payload]

}

I have a question however; it sounds like you are copying the message to all servers, when only one will end up needing to use it when the email arrives - is it worth doing something different and hashing a value which appears in both the RADIUS message, and the email, to select one server only; send the message to that server only, and then load balance the relevant email to the same server?

Or, select the pool member at random when sending the RADIUS message, write a state table entry, look it up later when the email arrives and send to the same server.

HI Sam,

What is the less CPU intensive of the three options? and how do i apply option 2 and 3? Is it via iRule?

Thank you in advance.

Thanks! Ferdz

Maybe I'm missing something, but do you need to receive a response from the servers you're sending the Raduis AVP messages to? An HSL won't give you that - it's one way. Are you doing something based on how one or more servers responds to the AVP message?

Hi Kevin, you mean the will the GGSN needs to receive a response from the anti-spam servers?

I was hoping you knew the answer to that question. Your original post indicates a potential need to send the same request to multiple pool members. This isn't generally possible (in a simultaneous way) if you expect to get a response. You could certainly send the same data out to multiple logging servers, or even potentially to multiple hosts (serially) using a sideband process, but ultimately it depends on what you need to happen and the timing of events. Can you elaborate on the intended traffic flow?

Hi Kevin,

They don't need to respond to the RADIUS packets. Is HSL can work on this way?

Thanks! Ferdz

Hi Kevin,

They don't need to respond to the RADIUS packets. Is HSL can work on this way?

Thanks! Ferdz

Hi Kevin,

1. First packet will be UDP packets from client to GGSN
2. GGSN will send a copy of Radius AVP(Containing MObile number of user) to anti-spam servers
3. Client will then send email but will be intercepted by ANti-Spam servers based on the Radius AVP received by the server). Either drop it or forward.

Thanks! Ferdz

So then do you really need the AVP message to go to all of the anti-spam servers, or do you simply need the client's email to go to the same (single) anti-spam server that received the AVP message from the GGSN?