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2E4X-27 Overview
2E42-27/2E42-27R/2E43-27/2E43-27R User’s Guide 1-7
1.4.6 Switching Options
The 2E4X-27 provides 802.1D Switching, 802.1Q switching or
SecureFast Switching Virtual Network Services between all of the front
panel interfaces including any installed Fast Ethernet Interface Modules
and HSIM.
802.1Q switching and SecureFast switching allow for future migration to
Virtual Network technologies without requiring the replacement of
existing equipment.
1.4.7 Standards Compatibility
The 2E4X-27 provides IEEE 802.1D Spanning Tree Algorithm (STA)
support to enhance the overall reliability of the network and protect
against “loop” conditions. The 2E4X-27 supports a wide variety of
industry standard MIBs including RFC 1213 (MIB II), RFC 1757
(RMON), RFC 1371 (RS232 MIB), RFC 1493 (Bridge MIB) and
RFC 1354 (FIB MIB). A full suite of Cabletron Systems Enterprise MIBs
provide a wide array of statistical information to enhance troubleshooting.
1.4.8 Year 2000 Compliant
The 2E4X-27 has an internal clock that can maintain the current time and
date beyond the year 1999.
1.4.9 LANVIEW Diagnostic LEDs
LANVIEW diagnostic LEDs serve as an important troubleshooting aid by
providing an easy way to observe the status of individual ports and overall
network operations. Chapter 4 provides details about the 2E4X-27
LANVIEW LEDs.