HP StorageWorks Enterprise File Services WAN Accelerator - Manual (Page 54)

54 C ONFIGURING THE HP EFS WAN A CCELERATOR
4. Click Apply to apply your settings to the running configuration. (Apply your
settings to test a new configuration before saving them permanently.)
5. Click Save to save your settings permanently or click Reset to return the settings
to their previous value.
Setting In-Path
Interfaces You modify the settings for the in-path interface in the Host Settings - Interface: In-
Path (LAN/WAN) page.
You specify the in-path interface if you plan to have the appliance in the direct path
(the same subnet) as the client and the server in your network. You also set the in-path
gateway (WAN router).
NOTE: You were prompted to configure the in-path interface when you completed the
installation wizard. This section describes how you can modify these settings.
Speed and Duplex
Tips If your network routers do not automatically negotiate the speed and duplex, you must
manually set the speed and duplex for the in-path interface (that is, the HP EFS WAN
Accelerator).
Speed and duplex mismatches can easily occur in a network. For example, if one end
of the link is set at half or full-duplex and the other end of the link is configured to
auto negotiate (auto), the link defaults to half-duplex, regardless of the duplex setting
on the non-auto-negotiated end. This duplex mismatch passes traffic, but it causes
interface errors and results in degraded optimization.
The following are general guidelines to avoid speed and duplex mismatches when
configuring the HP EFS WAN Accelerator:
Additional Interface Settings Speed. Select the speed from the drop-down list. The default value is Auto .
If your network routers or switches do not automatically negotiate the speed and duplex,
you must manually set the speed and duplex for the primary interface.
The speed and duplex must match (LAN and WAN) in an in-path configuration. If they
do not match you might have a large number of errors on the interface when it is in
bypass mode, because the switch and router are not set with the same speed settings.
Duplex. Select Auto, Full or Half from the drop-down list. The default value is Auto.
If your network routers or switches do not automatically negotiate the speed and duplex,
you must manually set the speed and duplex for the primary interface.
The speed and duplex must match (LAN and WAN) in an in-path configuration. If they
do not match you might have a large number of errors on the interface when it is in
bypass mode, because the switch and router are not set with the same duplex settings.
MTU. Specify the Maximum Transmission Unit (MTU) value. The MTU is the largest
physical packet size, measured in Bytes, that a network can transmit. The default value is
1500.
Control Description