Module Features - HP J3178A Hardware Installation Manual

Module Features

When you install the Switch 208/224 Management Module in your Switch 208T
or 224T, you get these enhanced switch capabilities:
Full-duplex port operation. By default, the 10 Mbit/s and
100 Mbit/s ports on the Switch 208/224 operate in half-duplex mode.
With the Switch Management Module installed, these ports can be
configured to operate in full-duplex mode.
Address Aging. The Switch 208/224 automatically learns the MAC
address of the devices connected to its ports and stores those address-
es in an 8000-entry address table. When a device is moved, its new
location is automatically learned and kept in the table so proper
communication is maintained with the device. With the Management
Module installed, the additional benefit is that inactive addresses are
aged out of the table -- the table is kept up to date with the addresses
of active nodes only.
Spanning Tree Support. The Switch 208/224 uses the IEEE 802.1d
Spanning Tree Protocol (STP) to ensure that only one path at a time
is active between any two nodes in the network, thus preventing loops
that cause broadcast storms from occurring in the network topology.
By default, STP is disabled on the switch. You can use the switch console
to enable STP operation; see chapter 4, "Configuring the Switch From the
Console" for those configuration procedures. For more information on
how STP works, see appendix D, "Spanning Tree Operation".
Switch Console. The Management Module has an RS-232 port to
which you can connect a console that can be used to configure,
monitor, and troubleshoot the switch and its ports. The console
interface can be used "out-of-band" from a PC or terminal directly
connected to the port or remotely through a modem connection, or
"in-band" through a Telnet session. For more information on the
switch console, see the section "Switch Console Features" in chapter
3, "The Switch Console".
Network Management. The Management Module has firmware
agents on board that provide SNMP Network Management control of
the switch, support for RMON (four groups) and HP Embedded
Advanced Sampling Environment (EASE) agents to diagnose net-
work problems to help optimize network performance. For more
information the network management features provided by the Man-
agement Module and how to configure those features, see chapter 6,
"Using SNMP to Monitor and Manage the Switch".
Management Module Description
Module Features
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