Chapter 40 ZULD
GS2220 Series User’s Guide
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The following table describes the fields in the above screen.
Table 183 Advanced Application > ZULD > Configuration
LABEL DESC RIPTIO N
Active Select this to enable ZULD on the Switch.
Port This field displays the port number.
* Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this row first to
set the common settings and then make adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you make them.
Active Select this to enable ZULD on the port. ZULD must be enabled to detect an unidirectional
link by monitoring OAMPDUs.
Mode Select No rm a l or Ag g re ssive . In No rm a l mode, ZULD only sends a syslog and trap when it
detects a unidirectional link. In Ag g re ssive mode, ZULD shuts down the port (puts it into an
ErrDisa b le state) as well as sends a syslog and trap when it detects a unidirectional link.
Probe Time Type the length of time that ZULD waits before declaring that a link is unidirectional. When
the probe time expires, and one port (either on the Switch or the connected device) still
has not received an OAMPDU, then ZULD declares that the link is unidirectional.
The allowed time range is from 5 – 65535 seconds.
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Sa ve link on the top navigation panel to
save your changes to the non-volatile memory when you are done configuring.
Cancel Click this to reset the values in this screen to their last-saved values.
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