Cabletron Systems Netlink FRX8000, User Manual

Page: 107 / 468

Chapter 8
Configuring Frame Relay
Frame relay ports in the FRX8000 are used to carry frame relay traffic, (over physical
ports), as well as other protocols encapsulated in frame relay (per RFC 1490, over
logical ports). A frame relay port can act as physical DCE, connecting to end-user
devices, or DTE, connecting to a network or frame relay PVC.
Each physical frame relay port can contain multiple logical ports, up to 56 per RLP.
All 56 logical ports can reside on one physical port, or be spread over several physical
ports.
N7400 and 7500 do not support frame relay.
DLCI Sharing
Multiple protocols can be passed over a single physical frame relay port by sharing a
DLCI (data link connection identifier). Each frame includes a DLCI to identify the
immediate point-to-point connection. (Each link in the end-to-end connection can use
a different DLCI.) Each node supports up to 984 user-configurable DLCIs. (Eight
more are supported, but are reserved for internal use.)
Required and Optional Configuration
To run frame relay, make sure the following are correctly configured in the database:
●
Network Defaults , described in Chapter 4. This file must be configured for a
new network. After that, no further changes are generally necessary.
●
Node parameters , described in Chapter 5. A record must exist for every
FRX8000, N7400, and N7500 on the network.
●
Line Processor , described in Chapter 6. A record must exist for every LP in
every node.
●
Bandwidth Allocation Groups , if configuring multiple protocols to run over a
frame relay port.
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Port , described on page 8-4. Each frame relay port’s record will identify the port
and define its operating parameters.
●
PVC Connection record, described on page 8-8. A record in this file is necessary
if you want to create a “permanent” connection between remote FRX8000
frame relay ports.