Cisco Systems v1.0 manual CMERouterXconfig# ip cef

Models: v1.0

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Target IP address: <ip_address>

Repeat count [5]: 1000

Datagram size [100]: 15000

Timeout in seconds [2]: <Enter>

Extended commands [n]: <Enter>

While the ping is occurring, place at least one phone call from one pod to another. Multiple calls can be made. Have one pod partner slowly count from one to 10 while the phone connection is active.

d.How is the voice quality? ______________________________________________________

e.On both CME routers in global configuration mode, enable CEF (Cisco Express Forwarding) on both CME routers.

CMERouterX(config)# ip cef

f.What is the purpose of CEF? _____________________________________________________

_____________________________________________________________________________

g.On only one of the router pods, enable the AutoQoS for VoIP feature for traffic on the serial interface. Do not configure AutoQoS to trust differential services code point (DSCP) markings. Type the interface serial slot/mod/port command from global configuration mode to access the serial interface.

CMERouterX(config)# interface serial mod/port

CMERouterX(config-if)# auto qos voip

h.What happened to the serial link? _________________________________________________

i.On the pod that does not have QoS enabled yet, enable AutoQoS for VoIP. Note that the module/port number that follows the serial parameter may be three digits separated by forward slashes.

CMERouterX(config)# interface serial mod/port

CMERouterX(config-if)# auto qos voip

j.Display and examine the running configuration and the resulting AutoQoS configuration after enabling AutoQoS. The following is a sample output.

class-map match-any AutoQoS-VoIP-Remark match ip dscp ef

match ip dscp cs3 match ip dscp af31

class-map match-any AutoQoS-VoIP-Control-UnTrust match access-group name AutoQoS-VoIP-Control

class-map match-any AutoQoS-VoIP-RTP-UnTrust match protocol rtp audio

match access-group name AutoQoS-VoIP-RTCP

!

119 - 165 IP Telephony v1.0 Lab 7.1.1

Copyright 2005, Cisco Systems, Inc.

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Cisco Systems v1.0 manual CMERouterXconfig# ip cef