EX交换机RSTP设置冗余链路配置.docx

EX交换机RSTP设置冗余链路配置.docx

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EX交换机RSTP设置冗余链路配置

内容：

1\RSTP配置案例指南

2\接入冗余链路配置指南RedundantTrunkLinksforFasterRecovery（12页）

注意：

上述两种链路冗余方式同一个交换机上只能够用一种。

几种查看STP状态的命令：

showspanning-treebridge查看网络拓扑信息

showspanning-treeinterface查看端口信息

 showspanning-treebridgedetail查看拓扑改变信息

monitorinterfacetraffic查看端口转发数据包的信息

1、Example:

ConfiguringFasterConvergenceandImprovingNetworkStabilitywithRSTPonEXSeriesSwitches

EXSeriesswitchesuseRapidSpanningTreeProtocol（RSTP）bydefaulttoprovidealoop-freetopology.RSTPworksbyidentifyingcertainlinksaspointtopointlinksandblockingotherpossiblepaths.Whenoneofthepoint-to-pointlinksfails,adesignatedalternatelinktransitionstotheforwardingstateandtakeover.

WhenswitchesthatsupportredundantroutingenginesuseRSTP,itisimportanttokeepRSTPsynchronizedonbothRoutingEnginessothatnolossofserviceoccursafteraRoutingEngineswitchover.Configuringnonstopbridging（NSB）onaswitchwithredundantRoutingEngineskeepsRSTPsynchronizedonbothRoutingEngines.Thisway,RSTPremainsactiveimmediatelyafteraswitchoverbecauseitisalreadysynchronizedtothebackupRoutingEngine.RSTPdoesnothavetoreconvergeafteraRoutingEngineswitchoverwhenNSBisenabledbecausetheneighbordevicesdonotdetectanRSTPchangeontheswitch.

ThisexampledescribeshowtoconfigureRSTPandNSBonfourEXSeriesswitches:

∙Requirements

∙OverviewandTopology

∙ConfiguringRSTPandNSBonSwitch1

∙ConfiguringRSTPandNSBonSwitch2

∙ConfiguringRSTPandNSBonSwitch3

∙ConfiguringRSTPandNSBonSwitch4

∙Verification

Requirements

Thisexampleusesthefollowinghardwareandsoftwarecomponents:

∙JunosOSRelease9.0orlaterforEXSeriesswitches

∙FourEXSeriesswitches

BeforeyouconfiguretheswitchesforRSTP,besureyouhave:

∙Installedthefourswitches.SeeConnectingandConfiguringanEXSeriesSwitch（J-WebProcedure）.

∙Performedtheinitialsoftwareconfigurationonallswitches.SeeInstallingandConnectinganEX3200Switch.

OverviewandTopology

Inthisexample,fourEXSeriesswitchesareconnectedinthetopologydisplayedinFigure1tocreatealoop-freetopology.

Figure1:

NetworkTopologyforRSTP

Table1:

ComponentsoftheTopologyforConfiguringRSTPonEXSeriesSwitches

Property

Settings

Switch1

ThefollowingportsonSwitch1areconnectedinthisway:

∙ge-0/0/9isconnectedtoSwitch2

∙ge-0/0/13isconnectedtoSwitch4

∙ge-0/0/11isconnectedtoSwitch3

Switch2

ThefollowingportsonSwitch2areconnectedinthisway:

∙ge-0/0/14isconnectedtoSwitch1

∙ge-0/0/18isconnectedtoSwitch3

Switch3

ThefollowingportsonSwitch3areconnectedinthisway:

∙ge-0/0/26isconnectedtoSwitch1

∙ge-0/0/28isconnectedtoSwitch2

∙ge-0/0/24isconnectedtoSwitch4

Switch4

ThefollowingportsonSwitch4areconnectedinthisway:

∙ge-0/0/19isconnectedtoSwitch1

∙ge-0/0/23isconnectedtoSwitch3

VLANnamesandtagIDs

voice-vlan,tag10

employee-vlan,tag20

guest-vlan,tag30

camera-vlan,tag40

ConfiguringRSTPandNSBonSwitch1

CLIQuickConfiguration

ToquicklyconfigureinterfacesandRSTPonSwitch1,copythefollowingcommandsandpastethemintotheswitchterminalwindow:

[edit]

setvlansvoice-vlandescription“VoiceVLAN”

setvlansvoice-vlanvlan-id10

setvlansemployee-vlandescription“EmployeeVLAN”

setvlansemployee-vlanvlan-id20

setvlansguest-vlandescription“GuestVLAN”

setvlansguest-vlanvlan-id30

setvlanscamera-vlandescription“CameraVLAN”

setvlanscamera-vlanvlan-id40

setinterfacesge-0/0/13unit0familyethernet-switchingvlanmembers[10203040]

setinterfacesge–0/0/9unit0familyethernet-switchingvlanmembers[10203040]

setinterfacesge–0/0/11unit0familyethernet-switchingvlanmembers[10203040]

setinterfacesge–0/0/13unit0familyethernet-switchingport-modetrunk

setinterfacesge-0/0/9unit0familyethernet-switchingport-modetrunk

setinterfacesge-0/0/11unit0familyethernet-switchingport-modetrunk

setprotocolsrstpbridge-priority16k

setprotocolsrstpinterfacege-0/0/13.0cost1000

setprotocolsrstpinterfacege-0/0/13.0modepoint-to-point

setprotocolsrstpinterfacege-0/0/9.0cost1000

setprotocolsrstpinterfacege-0/0/9.0modepoint-to-point

setprotocolsrstpinterfacege-0/0/11.0cost1000

setprotocolsrstpinterfacege-0/0/11.0modepoint-to-point

IfSwitch1includesdualroutingengines,configureNSB.ToquicklyconfigurenonstopbridgingonSwitch1,copythefollowingcommandsandpastethemintotheswitchterminalwindow:

[editchassisredundancy]

setgracefulswitchover

[editprotocolslayer-2-control]

setcommitsynchronize

[editsystem]

setnonstop-bridging

Step-by-StepProcedure

ToconfigureinterfacesandRSTPonSwitch1:

1.ConfiguretheVLANsvoice-vlan,employee-vlan,guest-vlan,andcamera-vlan:

[editvlans]

user@switch1#setvoice-vlandescription“VoiceVLAN”

user@switch1#setvoice-vlanvlan-id10

user@switch1#setemployee-vlandescription“EmployeeVLAN”

user@switch1#setemployee-vlanvlan-id20

user@switch1#setguest-vlandescription“GuestVLAN”

user@switch1#setguest-vlanvlan-id30

user@switch1#setcamera-vlandescription“CameraVLAN”

user@switch1#setguest-vlanvlan-id40

2.ConfiguretheVLANsontheinterfaces,includingsupportfortheEthernetSwitchingprotocol:

[editinterfaces]

user@switch1#setge-0/0/13unit0familyethernet-switchingvlanmembers[10203040]

user@switch1#setge-0/0/9unit0familyethernet-switchingvlanmembers[10203040]

user@switch1#setge-0/0/11unit0familyethernet-switchingvlanmembers[10203040]

3.Configuretheportmodefortheinterfaces:

[editinterfaces]

user@switch1#setge-0/0/13unit0familyethernet-switchingport-modetrunk

user@switch1#setge-0/0/9unit0familyethernet-switchingport-modetrunk

user@switch1#setge-0/0/11unit0familyethernet-switchingport-modetrunk

4.ConfigureRSTPontheswitch:

[editprotocols]

user@switch1#rstpbridge-priority16k

user@switch1#rstpinterfacege-0/0/13.0cost1000

user@switch1#rstpinterfacege-0/0/13.0modepoint-to-point

user@switch1#rstpinterfacege-0/0/9.0cost1000

user@switch1#rstpinterfacege-0/0/9.0modepoint-to-point

user@switch1#rstpinterfacege-0/0/11.0cost1000

user@switch1#rstpinterfacege-0/0/11.0modepoint-to-point

Step-by-StepProcedure

IfSwitch1includesdualroutingengines,configurenonstopbridging.ToconfigureNSBonSwitch1:

1.EnablegracefulRoutingEngineswitchover（GRES）:

[editchassisredundancy]

user@switch1#setgraceful-switchover

2.ConfiguretheswitchtoalwayssynchronizeconfigurationchangesbetweentheRoutingEngines:

[editsystem]

user@switch1#setcommitsynchronize

Ifyoutrytocommitaconfigurationinwhichnonstopbridgingisconfiguredbutsynchronizationofconfigurationchangesisnotconfigured,theconfigurationisnotcommitted.

3.Enablenonstopbridging:

[editethernet-switching-options]

user@switch1#setnonstop-bridging

Note:

ThisprocessenablesNSBforallNSB-supportedLayer2protocolsontheswitch,includingRSTP.

ConfiguringRSTPandNSBonSwitch2

CLIQuickConfiguration

ToquicklyconfigureinterfacesandRSTPonSwitch2,copythefollowingcommandsandpastethemintotheswitchterminalwindow:

[edit]

setvlansvoice-vlandescription“VoiceVLAN”

setvlansvoice-vlanvlan-id10

setvlansemployee-vlandescription“EmployeeVLAN”

setvlansemployee-vlanvlan-id20

setvlansguest-vlandescription“GuestVLAN”

setvlansguest-vlanvlan-id30

setvlanscamera-vlandescription“CameraVLAN”

setvlanscamera-vlanvlan-id40

setinterfacesge-0/0/14unit0familyethernet-switchingvlanmembers[10203040]

setinterfacesge-0/0/18unit0familyethernet-switchingvlanmembers[10203040]

setinterfacesge-0/0/14unit0familyethernet-switchingport-modetrunk

setinterfacesge-0/0/18unit0familyethernet-switchingport-modetrunk

setprotocolsrstpbridge-priority32k

setprotocolsrstpinterfacege-0/0/14.0cost1000

setprotocolsrstpinterfacege-0/0/14.0modepoint-to-point

setprotocolsrstpinterfacege-0/0/18.0cost1000

setprotocolsrstpinterfacege-0/0/18.0modepoint-to-point

IfSwitch2includesdualroutingengines,configureNSB.ToquicklyconfigurenonstopbridgingonSwitch2,copythefollowingcommandsandpastethemintotheswitchterminalwindow:

[editchassisredundancy]

setgracefulswitchover

[editprotocolslayer-2-control]

setcommitsynchronize

[editsystem]

setnonstop-bridging

Step-by-StepProcedure

ToconfigureinterfacesandRSTPonSwitch2:

1.ConfiguretheVLANsvoice-vlan,employee-vlan,guest-vlan,andcamera-vlan:

[editvlans]

user@switch2#setvoice-vlandescription“VoiceVLAN”

user@switch2#setvoice-vlanvlan-id10

user@switch2#setemployee-vlandescription“EmployeeVLAN”

user@switch2#setemployee-vlanvlan-id20

user@switch2#setguest-vlandescription“GuestVLAN”

user@switch2#setguest-vlanvlan-id30

user@switch2#setcamera-vlanvlan-description“CameraVLAN”

user@switch2#setguest-vlanvlan-id40

2.ConfiguretheVLANsontheinterfaces,includingsupportfortheEthernetSwitchingprotocol:

[editinterfaces]

user@switch2#setge-0/0/14unit0familyethernet-switchingvlanmembers[10203040]

user@switch2#setge-0/0/18unit0familyethernet-switchingvlanmembers[10203040]

3.Configuretheportmodefortheinterfaces:

[editinterfaces]

user@switch2#setge-0/0/14unit0familyethernet-switchingport-modetrunk

user@switch2#setge-0/0/18unit0familyethernet-switchingport-modetrunk

4.ConfigureRSTPontheswitch:

[editprotocols