NEC INTELLIGENT L2 SWITCH N8406-022A - Manual (Page 88)

High availability 88
Configuring UFD on Switch 2 (AOS CLI example)
1. Create a trunk group of uplink ports (20-24) to monitor. First you must set each port to full duplex mode.
>> Main# /cfg/port 20/gig/mode full (Set port 20 to full duplex)
>> Main# /cfg/port 22/gig/mode full (Set port 22 to full duplex)
>> Main# /cfg/trunk 2 (Create trunk group 2)
>> Trunk group 2# ena (Enable trunk group 2)
>> Trunk group 2# add 20 (Add port 20 to trunk group 2)
>> Trunk group 2# add 22 (Add port 22 to trunk group 2)
2. Assign the trunk group to be monitored for communication failure.
>> Main# /cfg/ufd/fdp 1/ena (Enable Failure Detection Pair 1)
>> FDP# ltm (Select Link to Monitor menu)
>> Failover Link to Monitor# addtrnk 2 (Monitor trunk group 2)
3. Assign downlink ports (1-16) to disable when an uplink failure occurs.
>> Main# /cfg/ufd/fdp 1/ltd (Select Link to Disable menu)
>> Failover Link to Disable# addport 1 (Add port 1 as a Link to Disable)
>> Failover Link to Disable# addport 2 (Add port 2 as a Link to Disable)
4. Turn UFD on.
>> Main# /cfg/ufd/on (Turn Uplink Failure Detection on)
>> Uplink Failure Detection# apply (Make your changes active)
>> Uplink Failure Detection# save (Save for restore after reboot)
When a link failure or Spanning Tree blocking occurs on trunk group 2, Switch 2 disables port 1 and port 2.
Configuring Uplink Failure Detection (BBI example)
1. Configure Uplink Failure Detection.
a. Click the Configure context button.
b. Open the Switch folder, and select Uplink Failure Detection (click the underlined text, not the folder).
c. Turn Uplink Failure Detection on, and then select FDP 1.
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