[c-nsp] ERSPAN - IPT Voice-Recording [NC]

[david.ponsdesserre at sgcib.com]

Hello .

I am after some feedback from people currently using ERSPAN (and not SPAN 
or RSPAN) to achieve IPT voice Recording . 
The idea will be to ERPSAN the voice Vlans(source) from each individual 
access switches (we use a fully routed envrnt) all the way down to the 
voice recorder (destination) located in our 2 mains Hubs .
Why ? For us :
- Cost saving on voice-recording infrastructure .
- Provide an active/active voice-recording solution across sites.
- Avoid to have Layer 2 connections between Access switches (you need that 
with RPSAN) and Voice-recording switches. (very positive heavy for Layer3 
design).

I know some companies are using RSPAN but i am struggling to get feedback 
with ERSPAN .
Thanks ! 

David Ponsdesserre
+44 207 762  4877
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