4.2.2 When an error is detected by the network monitoring function

When heartbeat errors are detected between NICs by the network monitoring function, change the communication type to "MAC tracking" to continue the communication by multiple NICs.

The following shows the operation status when an error is detected by network topology changes:

Figure 4.2 Error detection status by network topology changes

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

Before detecting errors by the network monitoring

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

After detecting errors by the network monitoring

# /opt/FJSVrvnet/bin/rvnetstat
 VNET               STATE     MODE         ACTIVE-LINK
+------------------+---------+------------+-----------------------------------------+
 fjvnet0            active    MAC-TRACK    net0,net1

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

Before detecting errors by the network monitoring

# /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 errors by the network monitoring

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

Monitoring Function : enable


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

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