Avaya Configuring Frame Relay Services Instrukcja Użytkownika Pobierz pdf (Strona 31)

Implementation Notes

2-7

If you deﬁne the PVCs in hybrid access mode (Figure 2-4), each PVC acts as a

separate bridge port. This enables the bridge running on the Frame Relay interface

to view the trafﬁc from Site A as arriving on a different port than that of Site B.

When the bridge sends out data, it sends it out from all ports, including the port

that has access to Site B. Therefore, data from Site A can reach Site B.

RFC 1490

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

Relay network. The router implements RFC 1490 for all protocols that it supports

over a Frame Relay network.

Protocol Prioritization

When you conﬁgure a router, 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 this 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: Protocol prioritization is not supported by BNX software.

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