Zte ZXR10 5900E Series - Page 171

Chapter5BGPConguration
àIftheupdatemessageissentbyanEBGPneighbor,thenadvertiseittoallclients
andnon-clients.
àIftheupdatemessageissentbyanon-client,thenadvertiseittoclients.
àIftheupdatemessageissentbyaRRC,thenadvertiseittoallclientsand
non-clientsexcepttheoriginatorofthisupdatemessage.
WhenmultipleRRsareavailableinanAS,dividemanyRRsbelongingtothesame
AStoacluster.AnAScanhavemanyclusters,andaclusterhasoneRRatleast.
NotethatRRisrecommendedtouseonlywheneveryrouterholdsmorethan100
BGPsessionsinanAS.
TocongureBGPRR,performthefollowingsteps.
StepCommandFunction
1ZXR10(config)#routerbgp<as-number>ThisstartsBGPprocessand
speciestheASnumberof
router.
2ZXR10(config-bgp)#bgpcluster-id{<value>|<ip-add
ress>}
ThiscongurestheclusterID
ofaRR.
Bydefault,router-IDisthe
clusterID.
3ZXR10(config-bgp)#neighbor[<ipv4-address>|<peer-gr
oup-name>]router-reflector-client
Thissetsaneighboror
neighborpeergrouptoroute
reectorclientpeer.
Descriptionsoftheparametersusedbystep2areshownbelow.
ParameterDescription
<value>ClusterID,therangeis1-4294967295
<ip-address>ClusterID,indotteddecimalnotation
Descriptionsoftheparametersusedbystep3areshownbelow.
ParameterDescription
<ipv4-address>IPv4address,inthedotteddecimalnotation
<peer-group-name>Thenameofpeer-group
CongurationExample
AsshowninFigure5-16,S1,S2andS3areIBGPneighborsbuttheyarenotfully
connected.CongurearouterreectortomakeS3forwardtheroutesreceivedbyan
IBGPneighbortoanotherIBGPneighbor.ConsideringIBGPneighborsarenotfully
interconnectedinAS600,congurerouterreectortoavoidfullinterconnection.
5-47
SJ-20150114102049-003|2015-01-15(R1.0)ZTEProprietaryandCondential