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Frame Relay Commands

9-86 Configuring Frame Relay

Oncechosenasstatic,noinverseARPwillbesentoutbydefault.AfreeinverseARPrequest

(similartoabove)canberequestedbythiscommand.

Oncechosenasstatic,thisDLCIcanbemadetorespondtoabroadcastbootpmessageenteringon

thisDLCIfromtheframe‐relay

network.Non‐broadcastbootpwillstillbesenttothelocalDHCP

serverorrelayedtotheIPhelperaddressserver..

Syntax

frame-relay interface-dlci nn [[keep-alive nn [gratuitous-inverse-arp]] |

[gratuitous-inverse-arp [keep-alive nn]] | [ip A.B.C.D [[bootp [[gratuitous-

inverse-arp [keep-alive nn]] | [keep-alive nn [gratuitous-inverse-arp]]]] |

[gratuitous-inverse-arp [[bootp [keep-alive nn]] | [keep-alive nn [bootp]]]] |

[keep-alive nn [[gratuitous-inverse-arp [bootp]] | [bootp [gratuitous-inverse-

arp]]]]]]]

Syntax of the “no” Form

UsethenocommandtodeletetheDLCIfromthespecifiedsub‐interface:

no frame-relay interface-dlci dlci-num

Mode

Sub‐interfaceconfiguration:XSR(config-subif<xx>)#

Notes: The remote site must support sending inverse-arp responses or the interface will come

down.

An inverse arp is sent from the XSR at a rate of 1 every 4 seconds. It is not configurable.

interface-dlci

nn

DLCInumberforthesub‐interface,rangingfrom16to1007.ForthePoint‐

to‐Point(P2P)sub‐interfac etype,onlyoneDLCIisallowed.ForPoint‐to‐

Multi‐Point(P2MP)youcanconfiguremultipleDLCIs.

gratuitous-

inverse-arp

SendsinverseARPrequestandignoresaresponse.Thisparameteroccurs

fornon‐staticIPmapping.P2Psub‐interfaceswillgenerateafreeinversearp

toallowtheremotesidetolearntheIPaddressofthissub‐interface.This

parameterisusefulonlyforP2Psub‐interfaces,sincePoint‐to

‐MultiPoint

interfaceswithdynamicIPresolutionwillalwaysinverseARPtolearnthe

remotenodeʹsIPaddress.OmittingthisvalueinaP2Psub‐interface

preventssendinganinverse‐arprequest.Aninverse‐arpresponseisalways

sentwhenaninverse‐arprequestisreceived.Broadcastbootpisnot

supportedindynamic

mode.Allbootprequestinthismodeareforwarded.

ip

ProtocoltypetosetstaticIPaddresstoDLCImapping.

A.B.C.D

StaticIPaddressofpeernode.Noaddresscheckingdone.

bootp

RespondtoabroadcastbootprequestwithstaticIPaddress (usedfor

RemoteAutoInstallCentralSite).

gratuitous-

inverse-arp

SendsinverseARPrequest.Responseisignored.ValidforbothMP2P&

P2Psub‐interfaces.

keep-alive nn

nnreferstothedurationthataDLCIunderaP2Pinterfacewillwaitwithno

trafficbeingreceivedbeforesendinganinverse‐arppackettoconfirmthat

theremotesideisstillpresent.Thennrangeis10to600seconds.

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