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Channel Hub, which means you can add host computers,
servers, and storage modules to the arbitrated loop
dynamically without powering off the Fibre Channel Hub or
any connected devices. If you remove a GBIC from a
Fibre Channel Hub port, that port is automatically
bypassed. The remaining hub ports continue to operate
normally with no degradation of system performance.
Conversely, if you plug a GBIC into the Fibre Channel
Hub, it will automatically be inserted and become a node
on the loop if valid Fibre Channel data is received from the
device.
Data transfer within the Fibre Channel Hub is implemented
in serial differential Positive Emitter Coupled Logic (PECL)
AC coupled logic. Each Fibre Channel Hub port monitors
the serial data input stream as well as the GBIC connected
to it.
The following conditions will cause the Fibre Channel Hub
to bypass a port:
TX_FAULT: Detects a GBIC transmitter fault.
RX_LOS: Detects a loss of received signal amplitude
from the device.
MOD_DEF: Detects the absence of a GBIC.
The Fibre Channel Hub circuitry detects off-frequency data,
excessive jitter, or inadequate edge transition density on a
per-port basis. The Fibre Channel Hub uses the
standardized AMP SCA2 20-pin connector to implement
hot plugging. Surge currents, caused by hot plugging, are
minimized by slow-start circuitry and a pin-sequencing
procedure on the GBIC. Electrostatic discharge (ESD)
transients are minimized by means of sequenced
connector contacts.
The Fibre Channel Hub includes a universal power supply
that can operate from 95 to 250 V ac and from 50 to 60
Hz.
Fibre Channel Long-Wave GBIC
Features of the long-wave optical GBIC include:
Full-speed: 1.0625 Gbps
Uses single-mode 9
µ
m fiber
Wavelength: 1310 nm
Non-OFC laser
Uses dual SC fiber optic connectors
Fiber lengths: 2 meters minimum, 10 kilometers
maximum
Fibre Channel Short-Wave GBIC
Features of the short-wave optical GBIC include:
Compliant with Fibre Channel FC-PH-2 physical layer
option 100-M5-SN-I
Full-speed: 1.0625 Gbps
Type 3523 Fibre Channel Hub and GBIC
7
Summary of Contents for Netfinity Series
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Page 84: ...IBM Part Number 10L9845 Printed in U S A S1 L 9845...