DLE28-MA Overview
DLE28-MA User’s Guide
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1.1.1 Connectivity
The DLE28-MA connects to Ethernet networks or workstations through
24 ST fiber optic ports on the front panel. These ports support multimode
fiber optic cables at lengths up to 2 kilometers. The ports are IEEE 802.3
10BASE-F compliant.
1.1.2 Full Duplex Switched Ethernet
Each switched Ethernet port supports full wire-speed Ethernet
communications and can be configured to operate in Full Duplex
Switched Ethernet mode, which provides 20 Mbps of bandwidth.
The optional Fast Ethernet Interface Modules for the DLE28-MA can also
be configured to operate in Full Duplex Switched Ethernet mode, which
provides 200 Mbps of bandwidth.
1.1.3 Management
Management of the DLE28-MA is accomplished using Local
Management tools or remote SNMP management stations. Local
Management is accessible through the RS232 COM port on the front
panel using a local VT100 terminal, or a remote VT100 terminal via a
modem connection, and in-band via a Telnet connection. In-band remote
management is possible through any SNMP compliant Network
Management Software.
1.1.4 Switching Options
The DLE28-MA provides 802.1D switching (bridging) and 802.1Q
switching between all of the front panel interfaces including Fast Ethernet
Interface Modules and High Speed Interface Modules (HSIMs).
The 802.1Q switching allows for future migration to Virtual Network
technologies without requiring the replacement of existing equipment.
1.1.5 Standards Compatibility
The DLE28-MA 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 DLE28-MA provides IEEE 802.1D Spanning
Tree Algorithm (STA) support to enhance the overall reliability of the
network and protect against “loop” conditions. The DLE28-MA supports
