Cascading Hubs; Hub Management; Out-Of-Band Management - HP J2415A Installation And Reference Manual

Hub Reference

Cascading Hubs

The Hub-14 has 12 downlink ports, any of which can be used to cascade to a
lower-level hub. Lower-level hubs contain uplink ports that must be used to
cascade up to an upper-level hub. In a network of cascaded hubs, the
uppermost hub (whose Uplink port is not used) is referred to as the level 1,
or "root", hub.
N o t e
Although you should minimize the levels of cascading, up to five levels of
cascaded hubs are supported. Three levels of cascaded hubs are
recommended.
A hub's Uplink port is a special LAN port and may only be used for
cascading. Because the Uplink port operates in promiscuous mode, it sees
all traffic on a 100VG LAN.
For more information on 100VG LAN topologies, refer to the
HP 100VG-AnyLAN Technology Guide.

Hub Management

Out-of-Band Management

Out-of-band management refers to the ability to manage an
HP AdvanceStack hub, or chain of hubs, from a Windows-based PC running
HP Stack Manager or from an ASCII console. For hubs on a Distributed
Management Chain, the PC can be connected to the RS-232 console port of
any hub in the chain.
HP Stack Manager is a Windows program that serves as the console
interface for HP AdvanceStack hubs. It is the management program supplied
with your hub. With this program you can configure, monitor, and diagnose
your hub (or chain of hubs).
Both HP AdvanceStack 100VG and 10Base-T hubs on the same Distributed
Management Chain can be managed from a single HP Stack Manager
console. However, HP Stack Manager features that can be used are device
dependent. Refer to chapter 2, "Installing and Using HP Stack Manager", for
more details about the use of HP Stack Manager with 100VG hubs.
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