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DLSw Service Parameters

304233-A Rev. 00

A-17

Parameter: Virtual Ring MTU

Path:

Configuration Manager > Protocols > DLSw > Advanced > Global

Default: 1500

Options: Any number of bytes equal to or greater than 1

Function: Specifies an MTU size for frames sent from local, LAN-attached systems to

systems on remote LANs. The smallest MTU size supported among all remote

LANs in your configuration determines the maximum value of the Virtual Ring

MTU parameter for the local router.

The Virtual Ring MTU allows network administrators to limit the size of

packets traversing the network. Based on the value that you specify, the router

enters the appropriate maximum MTU into any SRB explorer packet that uses

DLSw services.

Instructions: Type any number of bytes equal to or greater than 1.

Entering a new value or accepting the default value for this mandatory

parameter helps to prepare endstations for the MTUs of remote LANs.

MIB Object ID: 1.3.6.1.4.1.18.3.5.1.5.1.10

Note: The DLSw IP Virtual Ring and Virtual Ring MTU parameters that

appear in the Edit DLSw Global Parameters window are primarily for

compatibility with SRB networks locally attached to the router. However, Site

Manager requires you to enter a value for the IP Virtual Ring, even if you are

configuring DLSw services on non-SRB segments locally attached to the same

router.

Note: Ethernet networks support an MTU size of 1500 bytes, while Token

Ring networks support much larger MTUs. When configuring DLSw for local

Token Ring-to-Ethernet translation bridge topologies, the Virtual Ring MTU

parameter should not exceed 1500. This sets the Token Ring MTU size so that

Ethernet endstations can accept the Token Ring traffic.

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Avaya Configuring DLSw Services Manual do Utilizador Página 157