Cabletron Systems EMM-E6 Ethernet Manual De Usuario

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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