Cabletron Systems DLE33-MA, DLE22-MA, DLE32-MA, DLE23-MA manual Subnet Mask Modifiable

Chapter 5: Local Management

Subnet Mask (Modifiable)

When a valid IP address is assigned, the Subnet Mask field automatically enters the default mask that corresponds with class of IP entered in the IP Address field. Some firmware revisions do support changing the chassis subnet mask from the default value. Refer to your Release Notes to ensure that the Subnet Mask is a modifiable field.

Displays the subnet mask for the chassis. A subnet mask “masks out” the network bits of the IP address by setting the bits in the mask to 1 when the network treats the corresponding bits in the IP address as part of the network or subnetwork address, or to 0 if the corresponding bit identifies the host. The DLM6C-AA chassis automatically uses the default subnet mask that corresponds to the IP class that was entered in the IP address field. Section 5.7.2, Setting the Subnet Mask describes how to change the subnet mask from the default value.

Chassis Date (Modifiable)

Contains a value that the chassis recognizes as the current date. When the chassis date is modified and saved all interface modules installed in the chassis are set to this date. To set a new chassis date, refer to

Section 5.7.3.

Chassis Time (Modifiable)

Contains a value that the chassis recognizes as the current time. When the chassis time is modified and saved, all interface modules installed in the chassis are set to this time. To enter a new time, refer to Section 5.7.4.

Screen Refresh Time (Modifiable)

Contains the rate at which the screens are updated. This setting determines how frequently (in seconds) information is updated on the screen. To enter a new update time, refer to Section 5.7.5.

Screen Lockout Time (Modifiable)

Contains the maximum number of minutes that the Local Management application displays a module’s sc reen 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 specified module’s Local Management screens. In this example, after five minutes of “idleness” (no input or action), the terminal “beeps” five times, the Local Management

5-16 DLE22-MA,DLE32-MA,DLE23-MA and DLE33-MA User’s Guide