3Com 3C780 User Guide - Page 111

Connect State, LER Alarm and LER Cutoff, LER Estimate

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Using the Hub 5-9 Connect State The Connect State indicates the state of each ports' connection. Table 5-6 lists the values and defines the connect states for the Connect State line in Figure 5-7. Table 5-6. Connect States Connect State Value Active Connect Disabled Standby Definition The port is incorporated into the token ring path. Both ends of the port's requested connection are in the process of being synchronized. The port is nonoperational. The port is waiting for initialization to finish before completing the requested connection. In the case of a dual homing configuration, the A port is held in Standby while the B port is Active. LER Alarm and LER Cutoff The LER alarm value is the Link Error Rate (LER) at which a link connection exceeds the present threshold and generates an alarm. The LER cutoff is the link error rate at which a faulty or poor link connection will be broken. For a complete description of these two link error rate parameters and their values, refer to the section "Setting SMT Parameters" in Chapter 4. LER Estimate This parameter provides a long-term average Link Error Rate estimate. LER Estimate ranges from 10-4 to 10-15.

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5-9
Using the Hub
Connect State
The Connect State indicates the state of each ports’ connection.
Table 5-6 lists
the values and defines the connect states for the Connect State line in Figure 5-7.
Table 5-6.
Connect States
Connect State
Value
Definition
Active
The port is incorporated into the token ring
path.
Connect
Both ends of the port’s requested connection
are in the process of being synchronized.
Disabled
The port is nonoperational.
Standby
The port is waiting for initialization to finish
before completing the requested connection.
In
the case of a dual homing configuration, the A
port is held in Standby while the B port is
Active.
LER Alarm and LER Cutoff
The LER alarm value is the Link Error Rate (LER) at which a link connection
exceeds the present threshold and generates an alarm.
The LER cutoff is the link error rate at which a faulty or poor link connection
will be broken.
For a complete description of these two link error rate parameters and their
values, refer to the section “Setting SMT Parameters” in Chapter 4.
LER Estimate
This parameter provides a long-term average Link Error Rate estimate.
LER
Estimate ranges from 10
-4
to 10
-15
.