EMM-E6 Ethernet User's Guide

CHAPTER 1: INTRODUCTION
1-8 EMM-E6 User’s Guide
Flash memory allows for the downloading of firmware to the module
without requiring that the module be shut down. The firmware download
may be performed at any time during the operation of the module, and the
new firmware image will be utilized at the next reset of the module.
Expandable LDRAM
The EMM-E6 comes with 8 MB of Local Dynamic Random Access
Memory (LDRAM). LDRAM is the “Main” memory from which the
routing or bridging functionality of the EMM-E6 operates. When the
EMM-E6 needs to support additional functionality, an LDRAM upgrade
may be required. If you are planning to add any functionality to your
EMM-E6 module, determine if an LDRAM expansion is required.
Expandable SDRAM
The EMM-E6 comes with 4 Megabytes (MB) of Shared Dynamic
Random Access Memory (SDRAM). SDRAM holds packets coming onto
the module temporarily while forwarding, filtering, and error checking
decisions are made. While SDRAM has been designed to facilitate future
expansion, at this time there are no EMM-E6 functions which require or
are assisted by the expansion of SDRAM memory.
SNMP and RMON support
Since the EMM-E6 is SNMP compliant, you can control and monitor the
device remotely and locally using different SNMP Network Management
packages. EMM-E6 firmware also supports several RMON groups,
including:
• Alarms • HostTopN
• Events • Matrix
• History • Statistics
• Host
LANVIEW Diagnostic LEDs
Cabletron provides a visual diagnostic and monitoring system, called
LANVIEW, with the EMM-E6. LANVIEW LEDs can help you quickly
identify device, port, and physical layer problems.
CH1Book Page 8 Wednesday, March 20, 1996 7:48 AM