H3C SR8800 Command Reference Manual

Also see for SR8800 IM-FW-II: Configuration guide Manual

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H3C SR8800 Command Reference Manual Manual pdf 88 page image

80DescriptionUse the link-protocol fr command to encapsulate interface link layer protocol as frame relay.By default, the link-layer protocol encapsulated on the interface is PPP, and the frame relay encapsulationformat is IETF.The frame relay encapsulation can be either ietf or nonstandard. IETF encapsulation conforms to RFC1490, and it supports the IETF standard and is compatible with dedicated encapsulation format ofmainstream routers.If you encapsulate a frame relay interface using any of these frame relay formats, the packets areencapsulated in the frame relay format before they are forwarded through the interface. Two routers cancommunicate with each other if the interfaces of both sides can recognize packets in both of the formatseven if they are encapsulated using different frame relay formats. If an interface on one side cannotrecognize packets of both formats, you need to encapsulate the two interfaces using the same framerelay format.CAUTION:Before switching the link layer protocol of an interface (from PPP/HDLC to FR or the other way around),manually remove all configurations related to QoS and ACL policies on the interface first.Examples# Configure frame relay encapsulation on interface Serial 4/1/8:10 and select the nonstandardencapsulation compatible format. system-view[Sysname] interface Serial 4/1/8:10[Sysname-Serial4/1/8:10] link-protocol fr nonstandardreset fr inarpSyntaxreset fr inarpViewUser viewDefault level2: System levelParametersNoneDescriptionUse the reset fr inarp command to clear the address mapping established by inverse ARP.In some special cases, for example, when the network architecture changes, the dynamic address mapsoriginally established will become invalid. It is necessary to establish them again. Users can use thiscommand to clear all the dynamic address maps.Related commands: fr inarp.Examples# Clear all the frame relay dynamic address maps.