Avaya Configuring Frame Relay Services User Manual download pdf (Page 33)

Frame Relay Overview

114058 Rev. A 2-9

Source Routing

Source routing is the method by which a bridge sends data across two networks.

The router supports source routing over Frame Relay networks, using RFC 1490

standard Frame Relay data encapsulation or Bay Networks proprietary Frame

Relay data encapsulation.

To conﬁgure source routing, refer to Conﬁguring Bridging Services.

RFC 1490

RFC 1490 deﬁnes the encapsulation method for sending data across a Frame

Relay network. Bay Networks routers implement RFC 1490 for all protocols that

we support over Frame Relay networks.

Protocol Prioritization

You can set priorities for the trafﬁc sent across a synchronous line interface using

a process called protocol prioritization. The ability to prioritize trafﬁc is important

for an application that is time-sensitive and that requires a fast response.

For example, a user at Router A participating in a TELNET session with Router B

requires a more immediate response than does a user at Router A performing a ﬁle

transfer with Router B.

When you select Frame Relay on a circuit, the router enables protocol

prioritization automatically. It does so because the DLCMI packets must have a

higher priority than any other packets you are sending across the network.

For more information about protocol prioritization, see Conﬁguring Trafﬁc Filters

and Protocol Prioritization.

Note: BNX software does not support protocol prioritization.

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Avaya Configuring Frame Relay Services User Manual Page 33