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Author Topic: Ideas for a port mirroring setup for IP call recording  (Read 1574 times)

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Offline JonathanP

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Ideas for a port mirroring setup for IP call recording
« on: April 20, 2015, 10:22:22 AM »
I have an Oaisys call recording server running under vmware. The ESX hosts are connected to a pair of 4524 switches stacked operating in pure Layer 2. The 4524 stack is connected to a pair of 5520 switches via a multilink trunk, the 5520 is operating in Layer 3. The 5520 stack is connected to a stack of 470 switches via another multilink trunk.
I need to call record internal calls from phones connected to the 470, to do this I need to send the traffic sent/received by the phones connected to the 470 a second nic on the call recording server.
To make it (possibly) a little more complicated the phones are a mixture of physical handsets which operate on a tagged voice vlan and softphones which operate on the untagged data vlan.

As far as I can see from the docs port mirroring on the 470 is limited to two ports or two mac addresses so it looks like I'll have to mirror the 5520-470 trunks on the 5520. So the question is how to I then get that traffic to the 4524 and in to the vmware hosts?


Offline Telair

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Re: Ideas for a port mirroring setup for IP call recording
« Reply #1 on: April 22, 2015, 01:09:24 PM »
It's been a long time since I used port mirroring on a 470, but as I recall it was pretty limited.  What software revisions are you running in your switches?  It's a lot easier if you can plug the call recorder in to the PBX.  At one location we had to use a beam splitter to pull the data off the fiber lines that ran from the voice switches to the core directly.