Cabletron Systems 2H23-50R, 2H33-37R Displays the total time that the device has been operating

General Configuration Screen

Screen Lockout Time (Modifiable)

Contains the maximum number of minutes that the Local Management application displays the device’s screen while awaiting input or action from a user. For example, if the number 5 is entered in this field, the user has up to five minutes to respond to each of the Local Management screens.

In this example, after five minutes of “idleness” (no input or action), the terminal “beeps” five times, the Local Management application terminates the session, and the display returns to the Local Management Password screen. To enter a new lockout time, refer to Section 5.7.8.

Device Uptime (Read-Only)

Displays the total time that the device has been operating.

Operational Mode (Selectable)

Allows the user to set the 2H23-50R or 2H33-37R so it operates as an 802.1D switch (802.1D SWITCHING), an IEEE 802.1Q switch (802.1Q SWITCHING), or as a Cabletron Systems SecureFast switch (SECURE FAST VLAN).

In all three modes of operation, the 12 connections on each RJ21 port (CONN1 – CONN4 on 2H23-50R or CONN1 – CONN3 on 2H33-37R) may be assigned individually to operate at 10 Mbps or 100 Mbps. The connections that share either 10 Mbps or 100 Mbps operation reside on one network (two networks per RJ21 port).

In the 802.1D SWITCHING mode, each of the networks are automatically bridged to each other and to any Fast Ethernet Interface Module in the 2H23-50R or HSIM port(s) in the 2H33-37R.

In the 802.1Q SWITCHING mode, the switching functionality of the device can be increased by creating and maintaining IEEE 802.1Q port based Virtual LANs (VLANs).

In the SECURE FAST VLAN mode, the device acts as a SecureFast switch. With the Cabletron Systems VLAN Manager software, the device is able to increase its switching functionality by creating and maintaining VLANs.

For details on how to select the Operational Mode, refer to Section 5.7.9.

2H23-50R/2H33-37R User’s Guide 5-19