Cabletron Systems NBR-420 manual The NBR provides IETF MIB support, which includes the following

Chapter 1: Introduction

Bridging/Routing

The NBR-420 and NBR-620 can support two optional Bridge/Router Interface Modules (BRIMs). These modules allow for additional Ethernet connections, Wide Area (Full or Fractional T1; 56k DDS) access, or links to existing high-speed network backbones such as Asynchronous Transfer Mode (ATM) or Fiber Distributed Data Interface (FDDI).

Memory

The NBR comes with 4 Megabytes (MB) of Shared Dynamic Random Access Memory (SDRAM), 8 MB of Local Dynamic Random Access Memory (LDRAM), and 2 MB of FLASH Electrically Erasable Programmable Read Only Memory (FLASH EEPROM). In addition, the NBR motherboard provides the option of upgrading memory capacity by using Single In-line Memory Modules (SIMMs).

In order to fully use Remote Monitoring (RMON), it is necessary to upgrade local memory with an 8 MB SIMM. Without this upgrade, some RMON groups may not be available.

NOTE

For information on how to order SIMM upgrade packages, contact Cabletron Systems Technical Support.

DLM

The NBR allows the option of using Cabletron Systems Distributed LAN Monitor (DLM) software to locally poll and monitor any Simple Network Management Protocol (SNMP) or Internet Protocol (IP) device.

Management Information Base (MIB) Support

The NBR provides IETF MIB support, which includes the following:

•Cabletron Systems Enterprise MIBs

•Remote Monitoring MIB (RMON)

•Bridge MIB

•MIBII

Page 1-4 NBR-SERIES Installation Guide