Solved: RSPAN: VoIP Traffic

colmgrier · ‎06-09-2009

RSPAN

Customer has bought voice recorder software, and would like to capture.

viop traffic from vlan 10 and vlan 20

Please see attachment.

Q. How do I configure Rspan on the edge and core switches to cature the voice traffic.

Q. Will the voice recored server host port be a trunk port.

Please advise,

Regards,

Colm

iyde · ‎06-09-2009

Q. How do I configure RSPAN on the edge and core switches to capture the voice traffic.

A: In the Edge switches you configure a SPAN session with VLAN 10 or VLAN 20, respectively, as the source, and a RSPAN VLAN as destination.

Example:

vlan xxx

name RSPAN_VLAN

remote-span

exit

monitor session 1 source interface vlan10|vlan20

monitor session 1 destination remote vlan xxx

In the core you configure the RSPAN VLAN as source and the physical interface to which the Voice Recorder is attached as the destination. Example:

vlan xxx

name RSPAN_VLAN

remote-span

exit

monitor session 1 source remote vlan xxx

monitor session 1 destination interface gig1/1

Make sure that VLANxxx is allowed on the trunk between edge switches and core switch.

Read more about SPAN and RSPAN here: http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_46_se/configuration/guide/swspan.html

Q. Will the voice recored server host port be a trunk port.

A: No. The port will be a SPAN destination port. See http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_46_se/configuration/guide/swspan.html#wp1036749 for details.

HTH.

Ingolf

View solution in original post

iyde · ‎06-09-2009

Q. How do I configure RSPAN on the edge and core switches to capture the voice traffic.

A: In the Edge switches you configure a SPAN session with VLAN 10 or VLAN 20, respectively, as the source, and a RSPAN VLAN as destination.

Example:

vlan xxx

name RSPAN_VLAN

remote-span

exit

monitor session 1 source interface vlan10|vlan20

monitor session 1 destination remote vlan xxx

In the core you configure the RSPAN VLAN as source and the physical interface to which the Voice Recorder is attached as the destination. Example:

vlan xxx

name RSPAN_VLAN

remote-span

exit

monitor session 1 source remote vlan xxx

monitor session 1 destination interface gig1/1

Make sure that VLANxxx is allowed on the trunk between edge switches and core switch.

Read more about SPAN and RSPAN here: http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_46_se/configuration/guide/swspan.html

Q. Will the voice recored server host port be a trunk port.

A: No. The port will be a SPAN destination port. See http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_46_se/configuration/guide/swspan.html#wp1036749 for details.

HTH.

Ingolf