User`s guide

Configuring WAN Connections
Data compression options
1-6 Preliminary January 30, 1998 Pipeline User’s Guide
can match IP-routing PPP calls against the IP address specified in the LAN
Adrs parameter of the Connection profile.
4
What information is used to build the connection?
If authentication succeeds, the Pipeline builds the connection with the
encapsulation, Telco Options, and Session Options specified in the
Connection profile. If you configure the Pipeline to ignore authentication
and do not require a Connection profile, the Pipeline uses the Answer profile
to build the connection.
When the connection is established, the Pipeline forwards the call to its bridge or
router software and begins routing or bridging the packets.
Data compression options
For data compression to take effect, both sides of a connection must support it.
The Pipeline supports the following types of data compression:
Compression Description
Stac For PPP-encapsulated calls, refers to a pre-RFC
implementation of the Stacker compression algorithm,
developed by Stac Electronics, Inc., which modifies the
standard LZS compression algorithm to optimize for speed (as
opposed to optimizing for compression).
Stac compression is one of the parameters negotiated when
setting up a PPP connection.
Stac-9 Requests the standard Stac compression described by the Stac
RFC. If you chose to use Stac compression, set Link
Compression for MS-Stac or Stac-9. If the far-end of the link
does not accept MS-Stac or Stac-9, your unit will try to set up
compression corresponding to the Stac setting. If this
compression also fails, the unit runs the link uncompressed.