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Overview
HSIM-W87 User’s Guide 1-3
The HSIM-W87 has its own i960 HD microprocessor used to process data
packets, provide simple configuration, Inverse Multiplexer functionality,
and statistics processing. The SmartSwitch host platform provides the
required logical IP Host services. The HSIM-W87 is designed to be
installed in any Cabletron Systems product that supports the High Speed
Interface Module.
The HSIM-W87 operates in two modes:
• Switching
• IMUX
The first mode, switching, is the default mode. The HSIM-W87 forwards
data packets received by the host platform out through the logical DS1
interfaces. It also forwards packets received in the DS1 interfaces to or
through the host. The default and only layer 2 WAN protocol used with
the HSIM-W87 is raw HDLC.
The second mode of operation is using Cabletron Systems Inverse
Multiplexer (IMUX) functionality to aggregate multiple DS1 connections
into single higher bandwidth WAN connections. In order to operate in this
mode, the user will simply need to configure the appropriate IMUX
groups containing the DS1 connections.
Along with the built-in management features (Network Tools) described
in Chapter 4, the HSIM-W87 can be managed using SNMP, and statistical
data can be accessed via SNMP by referencing the interface group defined
in RFC-1213.
NOTE
The host platform may operate in 802.1D bridging, 802.1Q
VLAN, or SecureFast mode.