HP StorageWorks Enterprise File Services WAN Accelerator 2.1 Command Line Interface Reference Guide (November 2005)

HP STORAGEWORKS EFS WAN ACCELERATOR COMMAND-LINE INTERFACE REFERENCE MANUAL 89
4 - CONFIGURATION-MODE
C
OMMANDS
in-path rule auto-discover
Description Adds an in-path, auto-discovery rule. The HP EFS WAN Accelerator automatically
intercepts and optimizes traffic on all IP addresses (0.0.0.0) and ports (all). The no
command option disables the in-path auto-discover rule. The no command option has
the following syntax: no in-path <rulenum>.
Syntax in-path rule auto-discover {[scraddr <addr>] | [dstaddr <addr>] |
[dstport <port>]} | [neural-mode <mode>] | [optimization <policy>] |
[vlan <vlan tag ID>] | [rulenum <rulenum>]
Parameters
srcaddr <addr> Specifies the source network for this rule. For example:
10.0.0.3/24
dstaddr <addr> Specifies the destination network for this rule. For example:
10.0.0.0/24
dstport <port> Specifies the destination port for this rule. The destination port can
be a single port (number), a port label, or all specifies all ports.
neural-mode <mode> Enables neural framing in the HP EFS WAN Accelerator. Enabling
neural framing makes your WAN more efficient by gathering data
to select the optimal packet framing boundaries for Scalable Data
Referencing (SDR). For different types of traffic, one algorithm
may be better than others. There is a trade-off between the latency
added to the connection and the compression and SDR
performance. The choices are:
• never. Never use 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 use the Nagle algorithm. This is the default
setting (always wait 6 ms). 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.
• tcphints. Base setting on 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 adjust the Nagle parameters. The HP EFS
WAN Accelerator picks the best algorithm to use by learning
what algorithm is best and adapting if the traffic characteristic
changes.
TIP: To configure neural framing for the FTP data channel, define
an in-path rule with the destination port 20 and set its optimization
policy. To configure neural framing for the MAPI data channel,
define an in-path rule with the destination port 7830 and set its
optimization policy.