HP StorageWorks Enterprise File Services WAN Accelerator - Manual (Page 29)

HP S TORAGE W ORKS EFS WAN A CCELERATOR M ANAGEMENT C ONSOLE U SER G UIDE 29
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To enable neural framing, select a neural framing mode for the in-path rule.
To configure neural framing for an FTP data channel, define an in-path rule with the
destination port 20 and set its optimization policy. To configure neural framing for a
MAPI data channel, define an in-path rule with the destination port 7830 and set its
optimization policy.
Enabling VLAN
Tagging Optionally, you can configure the HP EFS WAN Accelerator to automatically intercept
Virtual Local Area Network (VLAN) tagged connections in VLAN trunked links. The
HP EFS WAN Accelerator supports VLAN 802.1q. To configure VLAN tagging you
perform the following tasks:
Mode Description
Never Never uses the Nagle algorithm. All the data is immediately
encoded without waiting for timers to fire or application
buffers to fill past a specified threshold. Neural heuristics are
computed in this mode but are not used.
Always Always uses the Nagle algorithm. All data is passed to the
codec which attempts to coalesce consume calls (if needed)
to achieve better fingerprinting. A timer (6 ms) backs it up
and causes leftover data to be consumed. Neural heuristics
are computed in this mode but are not used.
TCP Hints This is the default setting which is based on the TCP hints. If
data is received from a partial frame packet or a packet with
the TCP PUSH flag set, the encoder encodes the data instead
of immediately coalescing it. Neural heuristics are computed
in this mode but are not used.
Dynamic Dynamically adjusts the Nagle parameters. In this option,
the HP EFS WAN Accelerator software discerns the
optimum algorithm for a particular type of traffic and
switches to the best algorithm based on traffic characteristic
changes.