11-13-2007 09:59 AM - edited 03-15-2019 07:12 AM
Hello .
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.
D.
12-16-2007 12:00 PM
Hi,
actually i have the exact same scenario but instead of 3 buildings i have only 1 tower with 24 floors and 3750 on each floor with L3 routed eigrp network with the 6506,
actually my problem is ERSPAN as i read from the datasheets is not supported on the 3750 switches and only supported on the 6500 ?!
my recording server is connected to the 6500
so i dont know if you find something or still waiting :)
please if you have an idea let me know
Regards,
Hasan
12-18-2007 09:00 AM
Hello Hassan.
Unfortunately ERPSAN is only enable on high end lpatform (6500 / Sup720 / sup32) .
We have a Proof of concept plan with Cisco mid january to validate the feature for voice recording purpose . Have you found anything on your side ?
Regards.
David
02-21-2008 09:06 AM
Hi David,
actually there is no solution for such a setup like this, what i did is connect another L2 trunk and trunked RSPAN to the recorder !
i know it is not the best practice to have both L3 and L2 in the same edge switch but unfortuntly there is no other way to do it !!
i think cisco should come with a solution for such a common issue !
Regards,
Hasan
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide