Cabletron Systems CyberSWITCH CSX150 User Manual

Also see for CyberSWITCH CSX150: User guide Quick start guide

Contents

USER’S GUIDE190 CyberSWITCHC URRENT X.25 R ESTRICTIONS• X.25 virtual circuits must be two-way logical channels; one-way incoming and one-way out-going channels are not currently supported.• Each system can have only one X.25 access. The X.25 access can use only one line.• A maximum of forty eight virtual circuits can be configured per access. This can be any combi-nation of PVCs or SVCs. Each virtual circuit counts as one of the system’s available 48 connec-tions.• X.25 accesses cannot be changed via Dynamic Management.• Security must be enabled on the system in order to support X.25 connections.• Bearer channels which are used by X.25 accesses may not be shared by other access types.• Support for X.25 Multi-Link Protocol is not provided.• There can be no aggregation between X.25 virtual circuits and any other type of connections(for example, ISDN, Dedicated, or Frame Relay).• The maximum X.25 packet size supported is 1024 bytes.• RFC877 is the only line protocol supported for X.25 VCs. Therefore, only IP data can be sentover an X.25 VC.F RAME R ELAY A CCESSESCONFIGURING A FRAME RELAY ACCESSNotes: You may configure up to 32 frame relay accesses per CyberSWITCH, and a total of 48PVCs. The number of PVCs you can assign per access is arbitrary, as long as the totalnumber of PVCs (from all accesses) is not greater than 48.Frame relay and X.25 accesses are available only if you have purchased the additionalsoftware module for packet switched accesses.U SING CFGEDITTo add a frame relay access, information must be entered for the access itself, and also for theassociated PVC. A separate section with instructions for completing the configuration of eachfollows.Note: If a default value is provided, use that default value if you are unsure of the value.C ONFIGURING G ENERAL A CCESS INFORMATION1. Select Access from the Physical Resources menu, then follow the onscreen instructions to add aa frame relay access.2. Select the line Id the access will be using.3. Enter a frame relay access name of 1 to 16 non-blank, alpha-numeric characters. The frame relayaccess name is a user-defined name and is provided as an aid in helping you track eventsoccurring on a Frame Relay Access.4. Select the data rate from the supplied list of data rates.