4.2.1 When an error is detected by the link status monitoring function

When link down of a NIC is detected by the link status monitoring function, switch the NIC to continue the communication.

The following shows the operation status when a link down is detected:

Figure 4.1 Link down state is detected

The following shows the link status of the virtual NIC for this case:

Before detecting link down

# /opt/FJSVrvnet/bin/rvnetstat
 VNET               STATE     MODE         ACTIVE-LINK
+------------------+---------+------------+-----------------------------------------+
 fjvnet0            active    ACT-STANDBY  net0

After detecting link down

# /opt/FJSVrvnet/bin/rvnetstat
 VNET               STATE     MODE         ACTIVE-LINK
+------------------+---------+------------+-----------------------------------------+
 fjvnet0            active    ACT-STANDBY  net1

Also, the following shows the link status of interfaces under the virtual NIC and the monitoring status:

Before detecting link down

# /opt/FJSVrvnet/bin/rvnetstat -s -v

Monitoring Function : enable


[fjvnet0]
 Monitoring Status  : active
 Reachability       : {net0, net1}

 LINK               STATUS     IF-LINK
+------------------+----------+-------+
 net0               active     up
 net1               standby    up

After detecting link down

# /opt/FJSVrvnet/bin/rvnetstat -s -v

Monitoring Function : enable


[fjvnet0]
 Monitoring Status  : fail
 Reachability       : {net1}

 LINK               STATUS     IF-LINK
+------------------+----------+-------+
 net0               fail       down
 net1               active     up