Lab 71 Configuring Switches for IP Telephony Support.docx

Lab 71 Configuring Switches for IP Telephony Support.docx

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Lab71ConfiguringSwitchesforIPTelephonySupport

Lab7-1ConfiguringSwitchesforIPTelephonySupport

LearningObjectives

•ConfigureautoQoStosupportIPphones

•ConfigureCoSoverridefordataframes

•ConfigurethedistributionlayertotrustaccesslayerQoSmeasures

•ManuallyconfigureCoSfordevicesthatcannotspecifyCoS（camera）

•ConfigureHSRPforvoiceanddataVLANStoensureredundancy

•Configure802.1QtrunksandEtherChannelsforLayer2redundancyandload

balancing

Topology

Scenario

IPphoneshavebeendeployedthroughoutthenetwork.Thephonesare

connectedtoaccessportsona2960Ciscoswitch.Eachuser’sPCis

connectedtothenetworkviathephone’sinternalswitchsothatthephonescan

bedeployedwithoutadditionalwiring.

YoumustconfiguretheaccessanddistributionlayerswitchestotrusttheCoS

mappingprovidedbytheIPphonethroughCiscoDiscoveryProtocol（CDP）.To

2-22CCNP:

BuildingMultilayerSwitchedNetworksv5.0-Lab7-1Copyright©2006,CiscoSystems,Inc

ensureredundancyforthephonesanduserendstations,youmustuseHSRP

onthedistributionlayerswitches.

Acameraforvideoisalsodeployedonthenetwork,whichrequiresthatits

accessportonthe2960bemanuallyconfigured.Itisnotnecessarytohavea

cameratosuccessfullycompletethelab.

Step1

Poweruptheswitchesandusethestandardprocessforestablishinga

HyperTerminalconsoleconnectionfromaworkstationtoeachswitchinyour

pod.

PrepareforthelabbyremovingallpreviousVLANinformationand

configurations.RefertoLab2.0,“ClearingaSingleSwitch,”orLab2.0b,

“ClearingaSwitchConnectedtoaLargerNetwork.”

Step2

Cablethelabaccordingtothediagram.

ConfigurethemanagementIPaddressesinVLAN1,andthehostname,

password,andtelnetaccessonallfourswitches.

Youalsoneedtoconfigureadefaultgatewayontheaccesslayerswitches.The

distributionlayerswitchesactasLayer3devicesanddonotneeddefault

gateways.

Switch#configureterminal

Enterconfigurationcommands,oneperline.EndwithCNTL/Z.

Switch（config）#hostnameALS1

ALS1（config）#enablesecretcisco

ALS1（config）#linevty015

ALS1（config-line）#passwordcisco

ALS1（config-line）#login

ALS1（config-line）#exit

ALS1（config）#interfacevlan1

ALS1（config-if）#ipaddress172.16.1.101255.255.255.0

ALS1（config-if）#noshutdown

ALS1（config-if）#exit

ALS1（config）#ipdefault-gateway172.16.1.1

ALS1（config）#end

Switch#configureterminal

Enterconfigurationcommands,oneperline.EndwithCNTL/Z.

Switch（config）#hostnameALS2

ALS2（config）#enablesecretcisco

ALS2（config）#linevty015

ALS2（config-line）#passwordcisco

ALS2（config-line）#login

ALS2（config-line）#exit

ALS2（config）#interfacevlan1

ALS2（config-if）#ipaddress172.16.1.102255.255.255.0

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BuildingMultilayerSwitchedNetworksv5.0-Lab7-1Copyright©2006,CiscoSystems,Inc

ALS2（config-if）#noshutdown

ALS2（config-if）#exit

ALS2（config）#ipdefault-gateway172.16.1.1

ALS2（config）#end

Switch#configureterminal

Enterconfigurationcommands,oneperline.EndwithCNTL/Z.

Switch（config）#hostnameDLS1

DLS1（config）#enablesecretcisco

DLS1（config）#linevty015

DLS1（config-line）#passwordcisco

DLS1（config-line）#login

DLS1（config-line）#exit

DLS1（config）#interfacevlan1

DLS1（config-if）#ipaddress172.16.1.3255.255.255.0

DLS1（config-if）#noshutdown

DLS1（config-if）#end

Switch#configureterminal

Enterconfigurationcommands,oneperline.EndwithCNTL/Z.

Switch（config）#hostnameDLS2

DLS2（config）#enablesecretcisco

DLS2（config）#linevty015

DLS2（config-line）#passwordcisco

DLS2（config-line）#login

DLS2（config-line）#exit

DLS2（config）#interfacevlan1

DLS2（config-if）#ipaddress172.16.1.4255.255.255.0

DLS2（config-if）#noshutdown

DLS2（config-if）#end

Step3

Configurethetrunksaccordingtothediagram,andconfigureEtherChannels

betweentheswitches.UsingEtherChannelforthetrunksprovidesLayer2load

balancingoverredundanttrunks.

ThefollowingisasampleconfigurationforthetrunksandEtherChannelfrom

DLS1totheotherthreeswitches.Noticethatthe3560needstheswitchport

trunkencapsulation{dot1q|isl}command,becausethisswitchalsosupports

ISLencapsulation.

DLS1#configureterminal

Enterconfigurationcommands,oneperline.EndwithCNTL/Z.

DLS1（config）#interfacerangefastethernet0/7-8

DLS1（config-if-range）#switchporttrunkencapsulationdot1q

DLS1（config-if-range）#switchportmodetrunk

DLS1（config-if-range）#channel-group1modedesirable

Creatingaport-channelinterfacePort-channel1

DLS1（config-if-range）#interfacerangefastethernet0/9-10

DLS1（config-if-range）#switchporttrunkencapsulationdot1q

DLS1（config-if-range）#switchportmodetrunk

DLS1（config-if-range）#channel-group2modedesirable

Creatingaport-channelinterfacePort-channel2