Avaya Configuring DLSw Services Manual do Utilizador descarregar pdf (Página 58)

Configuring DLSw Services

3-2

• Upon receiving a CANUREACH frame, a DLSw slot:

— Forwards the frame to all other slots deﬁned in this router’s DLSw Slot

Table.

— Converts the CANUREACH frame back to a TEST (POLL) frame.

— Forwards the TEST (POLL) frame to all interfaces on this slot which have

DLSw enabled.

• If the destination device resides on an attached LAN, then this device

responds by broadcasting a TEST (RESPONSE) message. Upon receiving

this response, the remote router:

— Caches the MAC address (for SNA) or name (for NetBIOS) in the

appropriate table on the router.

— Converts the TEST (RESPONSE) packet into a DLSw ICANREACH

frame.

— Forwards the ICANREACH to the originating data link switch (router).

• Upon receiving the ICANREACH, the originating router:

— Caches the MAC address or NetBIOS name, and identity of the remote

router in the appropriate table on the router.

— Converts the ICANREACH back to a TEST (RESPONSE) frame.

— Forwards the packet to the originating workstation.

At completion, all routers and endstations can forward SNA and NetBIOS packets

appropriately, creating a logical session between endpoints.

Each slot on a Bay Networks running DLSw functions as an independent Data

Link Switch. The network administrator controls the packets forwarded to DLSw

by specifying the appropriate SAPs in the DLSw SAP Table.

Site Manager Roadmaps to Conﬁguring DLSw

Figures 3-1 and 3-2 illustrate roadmaps to conﬁguring and enabling DLSw on a

Bay Networks router. The roadmap you use depends on the speciﬁc type of

interface on which you are conﬁguring DLSw.

Figure 3-1 illustrates the steps for conﬁguring DLSw on Token Ring or other

source route bridge networks. Figure 3-2 illustrates the steps for conﬁguring

DLSw on Ethernet/802.3 or Frame Relay.

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Avaya Configuring DLSw Services Manual do Utilizador Página 58