D-Link DSN-2100 xStack Storage, User Manual

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xStack Storage User’s Guide 125
Chapter 7 Performing Diagnostics
For quick fault isolation, the xStack Storage Array provides two ping connectivity tests:
One ping connectivity test evaluates the connection between the xStack Storage Array
management port and the management console.
Another ping test evaluates the connection between an xStack Storage Array data port
and the iSCSI initiator.
This chapter describes how to perform these ping connectivity tests.
7.1 Pinging from an xStack Storage Array Network Portal
Using the Ping from Out of Band dialog box, you can ping in order to ascertain whether a
remote host can be reached from an xStack Storage Array network portal. This function is
extremely useful for testing the network port connection to the network, independent of
any application in which the original problem may have been detected.
Pinging lets you determine whether further testing should be directed toward the network
connection (the lower layers) or the application (the upper layers). If ping shows that
packets can travel to the network and back, the problem is probably in the upper layers. If
packets cannot make the round trip, lower protocol layers may be at fault.
To ping from a particular xStack Storage Array network portal, use the following procedure:
1. In the Logical Resources tab, expand Network Entities, LAG Resources , and the LAG
that controls the desired network portal by clicking the plus sign (+) to the left of the
title. Then right-click the desired network portal and click
Ping From. A dialog box
similar to the one in Figure 7-1 appears.
Figure 7-1. Pinging from a Network Portal