Remote SPAN (RSPAN) for Voice Recorder

Some Voice Recorders require the copy of signal and RTP from IP Phone to theirs interfaces.

This example will show you how to configure remote span session to send the copy of signal and RTP from IP Phone to Voice Recording Server.

Access Switch Configuration

Access-Switch(config)#vlan 999
Access-Switch(config-vlan)#remote-span
Access-Switch(config-vlan)#exit
Access-Switch(config)#monitor session 1 source vlan 100
Access-Switch(config)#monitor session 1 destination remote vlan 999

Access-Switch(config)#int gi0/1
Access-Switch(config-if)#switchport mode trunk

Core Switch Configuration

Core-Switch(config)#vlan 999
Core-Switch(config-vlan)#remote-span
Core-Switch(config-vlan)#exit
Core-Switch(config)#monitor session 1 source remote vlan 999
Core-Switch(config)#monitor session 1 destination interface gi0/1

Core-Switch(config)#int gi0/3
Core-Switch(config-if)#switchport mode trunk

    

Voice Vlan and Auto QoS

Implementation of IP Telephony, voice vlan should be used to separate data and voice traffic.

Auto QoS Advantage.

1. Easy to implement.
2. Follow Cisco Best Practices for QoS.

This will show you the example configuration for voice vlan and QoS in switch.

Switch(config)#int fa0/1
Switch(config-if)#switchport mode access
Switch(config-if)#switchport access vlan 200
Switch(config-if)#switchport voice vlan 100
Switch(config-if)#spanning-tree portfast
Switch(config-if)#auto qos voip cisco-phone ---> this will generate many commands

Note:

1. CDP need to be enabled on switch to allow switch to detect Cisco IP Phones.
2. For switch trunk port use "auto qos voip trust"