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Configuring DLSw Services

1-14

304233-A Rev. 00

Figure 1-5. Bay Networks Single-Switch Router

There are three important types of single-switch conversion:

• FRAD operation

• SDLC-to-LLC2 conversion

• QLLC-to-LLC2 conversion

FRAD Operation

Single-switch services enable a Bay Networks router to function as a Frame Relay

Access Device (FRAD). SNA devices are typically connected over a LAN or

SDLC connection to the router, providing local termination. The router first

connects to the Frame Relay (or other wide area) network, and then to an SNA

processor using the Boundary Network Node (BNN) or the Boundary Access

Node (BAN). BNN is the RFC 1490 standard. For more information on BNN and

BAN, refer to “Frame Relay Support

” on page 1-24.

SDLC-to-LLC2 Conversion

Using single-switch conversion enables the router to convert incoming SDLC

traffic into the appropriate format for forwarding to an attached LAN or Frame

Relay network. The conversion does not require an intervening WAN.

LLC 2

Bay Networks router

Token Ring

LLC2

SDLC

Cluster controller

Ethernet

NetBIOS

server

SNA

processor

LLC2 or SDLC

Logical connection

DLS0002A

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