Symonview & Multicast - PBX Info :: Your Free PBX, PABX and Telephone Information Resource

rhack · 06-30-2003, 05:06 PM

Can someone help me understand the multicast requirments for Symonview? Wherever I see a reference for multicast in the Symonview software it indicates the multicast address are only needed if you are using more than one Symonview server. Throughout the documentation, it is noted that a multicast enabled network is required for Symonview. I am not data fluent, but my data engineers say enabling multicast is a huge deal to implement without causing impact to the network. They have a solution, but it will require a couple of routers which will cost quite a bit.

Has anyone gotten Symonview to work without using multi-cast?

Thanks!

mrmike · 07-01-2003, 04:26 PM

Sorry rhack,
I think you have to enable multicast in order for your agents to see real time stats.

I think their is another product called agentview, but it may use multicast as well and it
is not free.

rhack · 07-01-2003, 06:06 PM

Thanks MrMike.

WATUSE · 07-02-2003, 02:03 PM

I will be thrilled to know that Symonview worked for you. Please update, I would like to know how your IT guys got it working for a couple of agents with no problems even with Multicast. Good luck.

**Chas2002** · 08-25-2003, 01:12 PM

Did you ever find a solution to this.......I'm interested in what was found...

Thanks

rhack · 08-25-2003, 01:37 PM

Still waiting on getting a router installed for the project. We will have one router that has multicast enabled, and have broadcast groups set up so that only clients that are allowed to receive multicast do so. When it gets implemented I'll see what I can do to share specifics.

rhack · 11-11-2003, 09:46 PM

For those of you that are interested, I have finally gotten my Symonivew operating. Turned out to not be such a big deal. We did it without installing additional routers as well. Our data architects came up with a scheme to limit our exposure with implementing multicast. In short, they allow only one IP address to be a "publisher" or "speaker". This prevents any other applications to jump on the network and start broadcasting. Additionally, access lists were created for the network segments that the agents requiring the symonview updates are on. For the Symonview application, it is not really neccesary to have access lists, just an added security measure.

Multicast operates in a reserved address range of 234.0.0.0 to 239.255.255.255. Symonview defaults to a 234 address, but we opted for a 239.255.1.1 - this is configured to be the only address that can broadcast. In Symonview, the default address of the multicast source was changed to the 239 address, on the client end, you define the static IP of the Symoniview server (this is used to get the display definitiions), and you define the multicast source address, agian this is the 239.255.1.1 address. The Symonview server only sends updates to the 239.255.1.1 address, once it sends messages it creates a multicast group, the client PC's "join" the multicast group to get their updates.

So, the broadcasting has been limited, and the number of clients able to listen has been limited. End result is multicast enabled without killing your network.

If anyone wants additonal details let me know. I was pretty psyched to get it working.

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