Frame Relay Dlci Mappings

Chapter 2 - Quickstart Configuration

Frame Relay Configuration

This section covers the settings required for Frame Relay operation of the HSSI WAN inter- face.

Link Configuration

Required for Dedicated Line Operation

This is the only mode of operation supported via the built-in HSSI CSU/DSU.

•Set Dedicated connection

•Set Frame Relay connection

CV: Use the Link Configuration: WAN Dialog Box.

TB: Use configure and then set the Mode and ConnectMode keywords in the Link Config

WAN 0 section.

Suggested for Dedicated Line Operation

Dedicated line operation generally does not require additional parameters for operation.

If you are connecting to another Compatible Systems router, this information is not required for Frame Relay operation. Compatible Systems uses IARP (Inverse Address Resolution Protocol) to dynamically generate this information. To connect to other vendors’ routers which do not support IARP, you must provide DLCI-to-protocol mapping information.

ϖNote: Many Internet Service Providers (ISP’s) do not support IARP as a default. If your WAN interface will be connected to an ISP via Frame Relay, check with your ISP technical staff on whether or not you must manually enter DLCI information.

CV: Use the DLCI Mapping Database window.

TB: Use configure and set the DLCI keyword in the Frame Relay WAN 0 section.

IP Protocol

There are two ways to set up Frame Relay. One is to set the WAN interface as a “numbered interface.” This means that the interface (and thus the Frame Relay network) will have an IP address, subnet mask, etc. The other is to set it as an unnumbered interface and specify that the link is point-to-point Frame Relay and set the local DLCI. Unnumbered Frame Relay can only be configured using text-based configuration. Instructions are provided for both options.

Required for IP Numbered Interface

•IP numbered interface

•IP address

•IP subnet mask

•IP broadcast address

CV: Use the TCP/IP Routing: WAN Dialog Box.

TB: Use the configure command and the Numbered, IPAddress, SubnetMask, and

IPBroadcast keywords in the IP WAN 0 section.

Required for IP Unnumbered Interface

•IP unnumbered interface

•Point-to-Point Frame Relay

•Local DLCI

TB: Use the configure command and the Numbered, PointToPointFrame, and Inter- faceDLCI keywords in the IP WAN 0 section.