SIMM Upgrade
B-6 Optional Installations and Mode Switch Bank Settings
DO NOT attempt a Forced BootP unless a BootP server has been configured for the
2E253-49R. The BootP server references the location of a station acting as a Trivial File
Transfer Protocol (TFTP) server containing the 2E253-49R image file.
When the position of Switch 6 is changed and the power is cycled to the 2E253-49R,
the device requests the image file location from the BootP server and uses TFTP to
download the image from the TFTP server. If one of these requirements is not met, the
2E253-49R continues to request either the BootP server or the TFTP server until the
RESET button on the 2E253-49R is pressed. Once the RESET button is pressed, the
2E253-49R resets after one minute and loads the image stored in FLASH memory.
•Switch 7 – Clear NVRAM. Changing the position of this switch resets NVRAM on the
next power-up of the device. All user-entered parameters, such as the IP address, device
names, etc., are reset to the factory default settings. Once the 2E253-49R resets, you
can either use the factory default settings or reenter your own parameters.
•Switch 8 – Reset Password/Community Names. Changing the position of this switch
clears user-entered passwords stored in NVRAM, and restores the factory default
passwords on the next power-up of the device. Once the 2E253-49R resets, you can
either use the factory default settings or reenter your own passwords.
B.4 SIMM UPGRADE
Memory upgrade is available for the 2E253-49R to expand its DRAM to 32 MB. This section
explains how to locate and add/replace a Single In-line Memory Module (SIMM). For information
on the available SIMM upgrades, call Cabletron Systems. For details on getting help, refer to
Section 1.2.
NOTE Do not change the position of switch 8 unless it is necessary to reset the module
super-user configured passwords to their factory default settings.