We are working on deploying some NICE voice recorder on our infrastrucure to record our IP telephony traffic .
We actually use a fully routed network to go from one building to another .(3 buildings)
Inside each building we r deploying a fully Layer 3 routed netwrok model .
This means that Vlans are not trunked from Access to distribution but we use routed interface to connect them instead .
I know RSPAN is working well in this situation and i have pretty much an idea about how to deploy it on the network to record each individual phone calls . We will then RSPAN the traffic from each voice Vlans on each access switches to a pair a voice recorder (For resilience) inside each building.
My idea was to use ERSPAN instead of RSPAN . The major difference between the two is ERPSAN allow you to "span" your traffic through a layer 3 domain .(RSPAN is limited to a layer 2 domain).
By using ERPSAN we will then ERSPAN the traffic from only one voice recorder instead of two in each building . Each voice recorders backuping each other.
I am struggling to have a feedback or any experience on that and i am not sure someone has ever done it before .
Anything unclear please ask.
Thanks for your replies , i look forward to hear everyone imnputs here.
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