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Chapter 1:
Introduction
1-6 2E48-27R/2E49-27R User’s Guide
1.3.6 Switching Options
The 2E4X-27R provides IEEE 802.1D switching, IEEE 802.1Q
switching, or SecureFast Switching Virtual Network Services between all
of the front panel interfaces including Fast Ethernet Interface Modules
and High Speed Interface Modules (HSIMs).
802.1Q switching and SecureFast switching allow for future migration to
Virtual Network technologies without requiring the replacement of
existing equipment.
1.3.7 Standards Compatibility
The 2E4X-27R is fully compliant with the IEEE 802.3 standard. The
optional Fast Ethernet Interface Modules are fully compliant with the
IEEE 802.3u standard.The 2E4X-27R provides IEEE 802.1D Spanning
Tree Algorithm (STA) support to enhance the overall reliability of the
network and protect against “loop” conditions. The 2E4X-27R supports a
wide variety of industry standard MIBs including RFC 1213 (MIB II),
RFC 1757 (RMON), 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.
1.3.8 Year 2000 Compliant
The 2E4X-27R has an internal clock that can maintain the current time
and date beyond the year 1999.
1.3.9 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-27R
LANVIEW LEDs.