Cabletron Systems SEHI-22/24 - Manual (Page 28)

Using the SEHI Hub View
2-14 Monitoring Hub Performance
• Inactive — The device at the other end of the cable is turned off, there is a
break in the cable, or there is no device or cable connected.
• Not Supported — The selected port does not support the Link feature, so the
SEHI cannot determine link status; this value will show only for thin coax
(BNC), AUI, or transceiver ports.
• Unknown — The SEHI can’t determine a link status.
Status
The port’s Status can be one of three states:
• Segmented —A port becomes segmented (that is, disabled by the repeater
module) when the port experiences 32 consecutive collisions, or when the
port’s collision detector is on for longer than approximately 2 to 3
milliseconds.
• Active —The port is operating normally.
• Unknown — The SEHI cannot determine port status.
Active Users
Each active source address communicating through the port is counted as an
active user. If Active Users is greater than one, it indicates that the port is
supporting a trunk connection.
Media Type
Indicates the type of cable segment connected to the port. The supported media
types are:
• Twisted Pair: RJ45 conn(ector)
• BNC EPIM
• AUI EPIM
• Transceiver Port: AUI EPIM
• Twisted Pair: RJ45 EPIM
• Multi-Mode Fiber: SMA EPIM
NOTE
The fact that thin coax (BNC), AUI, and transceiver ports do not support the link feature
can cause some misleading port status indicators: for example, a BNC port may show as
segmented when, in fact, the cable has been disconnected; or an AUI or transceiver port
may appear to have an active link when no cable has been attached. You should keep these
anomalies in mind when troubleshooting a device so equipped.
NOTE
Because they do not support the link feature, thin coax (BNC) ports will display as
segmented when there is no cable or terminator attached or the cable or terminator has
been disconnected (i.e., a “no link” condition).