IBM 1PA, Руководство по эксплуатации, установке и обслуживанию

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7299 Multiplexers
The 7299 Multiplexer supports up to eight host ports and two host WSC polling
groups. These models are rack mounted.
The front view of the 8MX is shown in Figure 1-6. This model uses foiled
twisted-pair (FTP) cabling or UTP cabling. This Multiplexer has shielded RJ45
connectors.
Figure 1-6. Front View of 7299 Multiplexer
The following LEDs are on the front 8MX.
Power LED
This amber LED remains on when the 7299 is on.
Port LEDs
The triangular LED to the left of each port RJ connector lights when the port
that is attached to that connector has one or more active devices:
Off No device is connected to a Device Multiplexer, the connected
device(s) are not active, or no active host port is connected at
the host multiplexer.
On Connected device(s) are active.
2 Mbps mode LEDs
The circular LED to the left of each connector lights when the port operates in
2 Mbps mode. You can use these LEDs to debug network problems and to
ensure that your attached devices are running in 2 Mbps mode. If any device
on the port is not using 2 Mbps mode, the port operates in 1 Mbps mode.
Off At least one device is not capable of running in 2 Mbps
mode. The host WSC might not be capable of 2 Mbps
mode or the 2 Mbps mode is disabled in the WSC.
On All the active devices are running in 2 Mbps mode.
Flash off briefly The host LEDs flash about every 8 seconds. The host is
determining whether a 1 Mbps device has recently been
connected.
Note: If the host becomes inactive, the 2 Mbps LED is not valid until the host
becomes active again. In this circumstance, the LED can be left on when the host
is offline.
Chapter 1. Introducing the IBM 7299 Multiplexer, Express Hub, and Entry Hub for AS/400
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