Cabletron Systems CSX1200, CSX1000 manual Ppp

CONFIGURING RESOURCES AND LINES

Resources

The T1-E1-PRI can be used for any T1, E1, or PRI resource, and directly terminates a standard USOC RJ45 connector. It is supplied with a standard S/T interface and supports one port. It also provides support for the following switch types:

•NTT

•4ESS

•5ESS

•Definity

•DMS100, DMS250

•SL100

•NET5

•1TR6

•TS0-14

The ethernet-1 resource provides direct support for one standard AUI LAN connection. These AUI interfaces provide connections for 10Base2, 10Base5 or 10BaseT transceivers.

The COMMPORT resource provides access to the CyberSWITCH’s serial port (COM 1) for serial (asynchronous) communications. This includes access for local console management, as well as local async-PPP data transfer.

The following figure illustrates how the CyberSWITCH handles this asynchronous data when it is in autosense mode (the system default). The data arrives through the COM 1 port, and is sent to an internal Asynchronous Usage Discriminator (AUD), which monitors the data stream. The AUD determines if this is to be a PPP connection, or a remote console connection. This determination is made within a configurable time frame:

•if the AUD detects PPP LCP frames, it connects the data to a PPP stack. The CyberSWITCH sends the data to the LAN as appropriate.

•if the AUD detects four carriage returns from a console device, it will provide analog console ac- cess by presenting a CyberSWITCH login prompt to the console.

•if neither situation is detected within the configured time frame, the connection is turned over to PPP.

Null Modem Connection

Console

Port

Asynchronous

Usage

Discriminator

PPPLCP Frames

4CRs

(Carriage Returns)

PPP

Stack

Console

Manager

(Login Prompt)

Workgroup Remote Access Switch 91