Lenovo ThinkSystem DE Series - Replace drive in DE2000 H or DE4000 H (60-drive shelf)

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-s switch sets the packet size bit. The -d switch sets the DF (Don't Fragment) bit on the IPv4

packet. These options allow jumbo frames of 9,000 bytes to be successfully transmitted between

the iSCSI initiator and the target.

vmkping -s 8972 -d <iSCSI_target_IP_address>

In this example, the iSCSI target IP address is 192.0.2.8.

vmkping -s 8972 -d 192.0.2.8

Pinging 192.0.2.8 with 8972 bytes of data:

Reply from 192.0.2.8: bytes=8972 time=2ms TTL=64

Ping statistics for 192.0.2.8:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 2ms, Maximum = 2ms, Average = 2ms

Step 2. Issue a vvmmkkppiinngg command from each host’s initiator address (the IP address of the host Ethernet

port used for iSCSI) to each controller iSCSI port. Perform this action from each host server in the

configuration, changing the IP addresses as necessary.

Note: If the command fails with the message sendto() failed (Message too long), verify the MTU

size (jumbo frame support) for the Ethernet interfaces on the host server, storage controller, and

switch ports.

Step 3. Return to the iSCSI Configuration procedure to finish target discovery.

ThinkSystem DE Series Hardware Installation and Maintenance Guide for 2U Enclosures

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