Avaya Configuring LLC Services Uživatelský manuál stáhnout pdf (Strana 43)

LLC2 Routed over Frame Relay

117357-A Rev. A 2-5

When the router receives an LLC frame from the DLSw network with a dmac

not starting with the virtual MAC mask, the mapping table at the Frame Relay

interface translates the dmac into a DLCI.

SDLC single switched over LLC does not require address mapping if a virtual

MAC address is used to access the host. But you still have to deﬁne DLCIs.

Usually you conﬁgure only the remote MAC in the mapping table, setting it equal

to the remote host MAC address. (A host may be an IBM mainframe.) You must

conﬁgure the local MAC in the mapping table only if the Frame Relay interface

receives connection requests. Usually only local (workstation) nodes will request

a connection, so you conﬁgure only the remote MAC address.

Router Mapping Examples

Some sample network conﬁgurations with associated mapping tables follow,

including:

• Virtual MAC to Frame Relay

• Frame Relay to Virtual MAC

• Physical MAC to Frame Relay

• Frame Relay to Physical MAC

• Frame Relay to Frame Relay

Although these network conﬁgurations illustrate topologies with two routers, the

same principles apply for DLSw operating in single-switch mode. Instead of

conﬁguring a single interface on each router, you conﬁgure two interfaces on a

single router.

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Avaya Configuring LLC Services Uživatelský manuál Strana 43