Enabling And Disabling Llc Service; Fddi Ports; Setting Leralarm - 3Com corebuilder 3500 Implementation Manual

Enabling and
Disabling LLC Service

FDDI Ports

Setting lerAlarm

The Logical Link Control (LLC) service allows LLC frames to be sent and
received on the MAC. LLC frames are all data frames that are transmitted
on the network. If there is something wrong on your network, turn off
data (user) traffic for a MAC by disabling LLC service. Although you have
disabled data traffic from the MAC, the MAC still participates in neighbor
notification and is visible to network management.
You can display port statistics and configure the following port
parameters:
lerAlarm
lerCutoff
port labels
The lerAlarm attribute is the link error rate (LER) value at which a link
connection generates an alarm. If the LER value is greater than the alarm
setting, then SMT sends a Status Report Frame (SRF) to the network
manager software indicating a problem with a port.
Effects and Consequences
When you set the lerAlarm attribute, consider the following:
The lerAlarm value is expressed as the absolute value of the exponent
(such as 1 x 10 -10 ).
A healthy network has an LER exponent between 1 x 10
-15
1 x 10 .
Set the lerAlarm value below these values so that you only receive
alarms if your network is in poor health. The SMT Standard
recommended value is 8.
FDDI Ports 107
-10 and