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Question 13 - NCP-MCI-6.5 discussion

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An administrator needs to increase bandwidth available to the AHV host and to the CVM.

How should the administrator complete this task?

A.
In Prism, update vs0 to change the configuration to Active-Active.
Answers
A.
In Prism, update vs0 to change the configuration to Active-Active.
B.
Use manage-ovs commands to update br0 change the configuration to Active-Active.
Answers
B.
Use manage-ovs commands to update br0 change the configuration to Active-Active.
C.
In Prism, create a vsl interface and add any remaining uplinks.
Answers
C.
In Prism, create a vsl interface and add any remaining uplinks.
D.
Use manage-ovs commands to create br1 and add any remaining uplinks
Answers
D.
Use manage-ovs commands to create br1 and add any remaining uplinks
Suggested answer: B

Explanation:

The default network configuration for AHV hosts and CVMs is a bond named br0-up with two or more uplinks in active-backup mode. This means that only one uplink is active at a time, while the others are in standby mode. This provides high availability, but not load balancing or increased bandwidth. To increase the bandwidth available to the AHV host and the CVM, the administrator can change the bond mode to Active-Active, which allows all uplinks to be used simultaneously. This can be done using the manage-ovs commands on each AHV host.The steps are as follows1:

Log in to the AHV host using SSH.

Enter maintenance mode on the CVM by runningallssh 'cluster status | grep -i cvm | grep -i down'.

Change the bond mode to Active-Active by runningmanage_ovs --bond_mode active-active update_uplinks br0-up <uplink_list>, where<uplink_list>is a comma-separated list of uplink interfaces (for example, eth0,eth1).

Verify the bond mode by runningmanage_ovs show_uplinks.

Exit maintenance mode on the CVM by runningallssh 'cluster start'.

asked 23/09/2024
Peter Chong
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