Specifications

CHAPTER 8
Voice and Video in a Campus Network
4. Fast Convergency: To enhance high availability, tune the routing and HSRP/VRRP/GLBP timers.
5. Test Plan: Test the voice implementation thoroughly before converting users to it. Check that both the phone and PC
get the correct IP addresses, that the phone registers with the UCM, and that calls to and from the phone succeed.
Manual Configuration
To associate a voice VLAN with a switch port, use the following:
Switch(config-if)# switchport voice vlan vlan-ID
To configure an IOS switch to trust the markings on traffic entering an interface, use the following:
Switch(config-if)# mls qos trust {dscp | cos}
To configure the switch to trust the traffic markings only if a Cisco phone is connected, use the following:
Switch(config-if)# mls qos trust device cisco-phone
To set a COS value for frames coming from a PC attached to the phone, use the following:
Switch(config-if)# switchport priority extend cos cos-value
To verify the interface parameters, use the following:
Switch(config-if)# show interfaces interface switchport
To verify the QoS parameters on an interface, use the following:
Switch(config-if)# show mls qos interface interface
[ 99 ]
© 2010 Pearson Education, Inc. All rights reserved. This publication is protected by copyright. Please see page 112 for more details.
CCNP SWITCH 642-813 Quick Reference by Denise Donohue