Functional Description
893-743-A
1-3
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One standard RS-232 serial communications port, implemented on a
DB-25 plug, for out-of-band connection to the telephone voice network
through an external modem
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Installation options on a table, on a wall, or in a standard 19-inch
equipment rack
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One local area network interface processor (LANIP) chip to collect
network and station statistics, monitor functions, and provide SNMP
communication for one Ethernet segment
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Dual-stack agent support for SNMP monitoring and control over both
IP and IPX network protocols
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Bootstrap Protocol (BootP) automatic boot and download protocol support
using Trivial File Transfer Protocol (TFTP)
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Boot firmware that allows separate downloading of agent image and
configuration data
Functional Description
The System 2000 10BASE-T hubs offer a unique, scalable architecture that
allows small networks to grow easily to accommodate additional users. Single
hubs can serve as standalone units to support entry-level departmental
10BASE-T LANs. As network requirements grow, the initial investment is
maintained by the unique expansion connection capability of the System 2000
hub. Hubs can be connected through special expansion ports that extend
management control to all ports in the network cluster while the cluster remains
as one logical IEEE 802.3 Ethernet repeater. The expansion connections allow
a more “modular” architecture to extend per-port SNMP management
functionality at a low incremental cost.
Because the IEEE sets a limit of four Ethernet repeaters between any two
stations, traditional workgroup hubs cascaded together to form larger segments
typically run into this configuration limitation. With the System 2000 hubs, all
of the expansion-connected hubs within the cluster support distributed
retiming, allowing the whole cluster to remain as one logical repeater. The
System 2000 hubs support up to 80 users in an expansion cluster.