Filter
Top Products
EtherHub 1500 System User’s Guide
Setup and Configuration 4-15
To set thresholds,
1. Open the Threshold dialog box from the menu bar.
2. Select the system component (Type: System, Any Hub, Any
Port, Select Hub, Select Port). If you choose Select Hub or
Select Port, then choose the Hub ID or Port ID using the
<F2> function key.
3. Select the variable to monitor (Variable: Frames, Bytes,
Collisions, Allignments, CRCs or Total Errors). If you
choose Select Hub or Select Port, then choose the variable
Type using the <F2> function key.
4. Input a decimal value for the low and high watermarks.
5. Select the appropriate action (Action: INACTIVE,
WARNING, WARNING & ISOLATE for hubs, or
WARNING & DISABLE for ports).
6. Implement your settings by pressing the <F3> function key.
Available Threshold Parameters for Hubs and Ports
Parameter
Description
Frame
The total number of frames.
Bytes
The total number of bytes.
Collisions
Multiple packets transmitted over a medium at the same time, making them unintelligible.
Alignments
Frame alignment errors occur when the received frame is a multiple of 8 bits.
CRC
s
This error occurs when the cyclic redundancy code for a frame is wrong.
(The cyclic redundancy code an error-checking algorithm used to indicate frame reception errors.)
Total Errors
The total number of collisions, frame alignment errors and CRC errors.
T: triggered N: not triggered
Event Activation
H
L
After initial event activation (i.e., crossing the high watermark),
the monitored variable must reach the low watermark before
another event is activated (i.e., again crossing the high watermark).
Notes about the hub and port threshold parameters,
• The rate for all values is per one second.
• Threshold entries are stored in the agent.
T
N
T