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ATM DXI Features and Implementation Notes

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If no multicast address is available for the protocol (because the network interface

has direct PVC access, you have not set up the service yet, or the VPI/VCI has not

been entered in the Adjacent Host Table), ATM DXI simulates a broadcast packet

by forwarding a copy of the message to each known PVC.

Simulated multicasting is generally used in certain address resolution techniques

and for applications that require the delivery of identical information to multiple

recipients.

ARP and Inverse ARP Support

ATM DXI supports the ARP protocol, enabling the router to dynamically resolve

IP network layer protocol-to-VPI/VCI address mappings. ATM DXI learns the

PVC address by detecting the PVC that received the ARP response.

ATM DXI also supports the Inverse ARP protocol. However, you can only use

Inverse ARP if both the local and remote router support it.

Bay Networks uses proprietary methods for ARP and Inverse ARP. These methods

are not compatible with third-party equipment (that is, equipment using the

speciﬁcations in RFC 1577).

ATM DXI Implementation Notes

This section describes special features regarding how Bay Networks implements

ATM DXI.

Conﬁguring Synchronous Lines for ATM DXI

If you enable ATM DXI on a circuit, Site Manager automatically sets synchronous

line parameters as follows:

For more information about these parameters, refer to Conﬁguring Line Services.

Parameter Value

BOFL Disable

Promiscuous Enable

Service Transparent

WAN Protocol ATM DXI

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Avaya Configuring ATM Services Manual do Utilizador Página 41