Which action should be taken?

A storage administrator has just completed an ISCSI implementation in a customer environment running VMware and needs to validate that the entire network path supports jumbo frames.

Which action should be taken?
A . Ping from the host with fragmentation.
B . Check the VMkernel adapter settings.
C . Ping from the host without fragmentation.
D . Check the broadcast domain settings.

View Answer

Answer: A

Explanation:

To validate that the entire network path supports jumbo frames after an iSCSI implementation, you should perform a ping test from the host with fragmentation.

This involves using the ping command with specific options to test jumbo frame support:

ping -M do -s 8972 <target_IP>

In this command:

-M do ensures the packets are not fragmented.

-s 8972 sets the packet size to 8972 bytes (9000 bytes MTU minus 28 bytes for the ICMP header). By confirming that the large packets are successfully transmitted without fragmentation, you can validate that the network path, including switches and adapters, supports jumbo frames.

For more details, you can check:

NetApp Documentation – iSCSI Configuration and Best Practices (NetApp) (NetApp).