Support User Manuals

Enterasys Networks XSR CLI Router User Manual

Open as PDF

of 684

BGP Set Commands

6-120 Configuring the Border Gateway Protocol

Mode

Route‐mapconfiguration:XSR(config-route-map)#

Default

Thedynamically‐learnedmetricvalue.

Example

Thefollowingexampledisplayshowthesetmetriccommandisusedtoupdatethevalueofthe

MEDvalueforBGProutesthatareadvertisedtoanexternalneighbor:

XSR(config)#access-list 66 permit 10.0.0.0 255.0.0.0

XSR(config)#route-map 1 permit 1

XSR(config-route-map)#match ip address 66

XSR(config-route-map)#set metric 20

XSR(config-route-map)#exit

XSR(config)#route-map 1 permit 2

XSR(config-route-map)#set metric 30

XSR(config-route-map)#exit

XSR(config)#router bgp 100

XSR(config-router)#neighbor 192.168.1.1 remote-as 101

XSR(config-router)#neighbor 192.168.1.1 route-map 1 out

ThesetmetriccommandisusedtochangethevalueoftheMED,whichimpactstheflowof

inboundtrafficintoamulti ‐homedAS.Alloftheoutboundupdatesleavingthisrouterand

matchingACL66willhaveMEDvalueof20assignedtothem.Alloftheremainingupdates

will

havetheMEDvalueof30.AlowervalueofMEDispreferredintheBGProuteselectionprocess.

set origin

ThiscommandassignsavaluetotheoriginattributeintheBGProutingupdatemessagewhic h

impactsBGProuteselection.Ensurethatamatchclausehasbeenspecified.

Thisattributeindicateswherearoutingupdateisderived.BGPprefersrouteswiththelowest

origintype:IGPispreferredoverEGPand

EGPispreferredoverincomplete.

Syntax

set origin {igp | egp | incomplete}

Syntax of the “no” Form

ThenoformofthiscommandremovesBGPorigincoding:

no set origin {igp | egp | incomplete}

igp

SetsBGPorigincodetoInteriorGatewayProtocol(IGP).

egp

SetsBGPorigincodetoExteriorGatewayProtocol(EGP).

incomplete

SetsBGPorigincodetounknown.

previous next