Avaya Cajun P882 User Manual page 218

Chapter 5
5-40
only by using the CLI and only for ports on 50-series and 80-series
gigabit modules. For more information about this feature, see
"Network Error Detection and
If NEDR shuts down a port, the switch will forward traffic through a
redundant port if you:
Enable a protocol that supports redundancy, such as OSPF,
VRRP, or STP, on the port
Provide an alternate path
If you do not enable a protocol that supports redundancy on the
port and provide an alternate path, you may lose traffic if the port
shuts down.
* Note: You can enable NEDR only for ports on gigabit Ethernet
modules and only by using CLI commands. You cannot
enable the feature on any other types of ports, for
example, Ethernet 10/100, ATM Uplink, or supervisor,
and cannot enable the feature by using the Web Agent.
* Note: If the switch has an 80-series supervisor module
installed, monitoring begins as soon as you turn on the
switch. If the switch has a layer 3 supervisor module
installed, monitoring may not begin until approximately
35 seconds after you turn on the switch.
If the rate of CRC errors equals or exceeds the threshold value, the
NEDR feature can:
Disable the port
* Note: You can reenable the turned off port by entering
the following CLI command:
set port enable
NEDR does not check for an available redundant port
or for a redundant protocol running on the port. You
must create a redundant path. Traffic loss will occur if
a redundant path is not available.
Log the event in the Event Log
If you replace a module that has a port that has been disabled by
NEDR, the switch will load the startup configuration for the module
and reenable the port. However, if you save the running
Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, Version v5.3.1
Recovery."