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DLSw Implementation Notes

304233-A Rev. 00

2-5

Count the IP virtual ring as one ring in each source routing segment attached to

your TCP/IP network. You count the IP virtual ring first rather than last, to avoid

configuring source routing segments that already contain more than eight ring

elements.

For more information on the DLSw IP Virtual Ring and Virtual Ring MTU

parameters, see Appendix A, “DLSw Service Parameters.”

DLSw and SRB on a Circuit

On an SRB circuit with DLSw services enabled (Figure 2-3), the following rules

apply:

• Upon receiving an explorer frame that contains a DLSw-specific destination

SAP address, DLSw and SRB attempt concurrently to locate the requested

program entity.

-- DLSw searches the network for a route to the target system by forwarding

the packet to all local DLSw interfaces and all known remote DLSw

routers.

-- SRB looks for a bridged path to the target system using standard source

route bridge broadcasts.

• DLSw or SRB, whichever receives a response first, takes precedence. The

slower subsystem ceases any further attempts to support a connection to the

target program.

Note:

Site Manager requires you to enter a value for the DLSw IP Virtual Ring

parameter, even if your network includes only Ethernet/802.3 circuits

configured for access to DLSw services.

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Avaya Configuring DLSw Services Manual do Utilizador Página 61