Setting Configuration Parameters; Compression - Alcatel Omni Switch/Router User Manual

Compression

Data compression allows you to get more data through the Frame Relay pipeline, further
enhancing cost benefits. A typical data compression ratio on the
level is 4:1. In addition, the compression processor (
store up to 100 virtual circuits (on a 4-port
can store up to 200 virtual circuits without performance degradation. Support for more
WSX
than 100 compressed VCs (or 200 VCs on an 8-port
memory, but compression performance may decrease at these levels.
The will only compress data if you enable Compression Negotiation through software
WSX
and the Bridge/Router on the other end of the Frame Relay virtual circuit supports standard
FRF.9 compression. (An Omni Switch/Router-to-Omni Switch/Router connection would
support compression.) Negotiation is necessary because if compressed data is sent to a
Bridge/Router that does not support compression, then this Bridge/Router will not recognize
the data and will automatically drop the unrecognizable frames.
If you enable Compression Negotiation, the
other end of the circuit (according to
it does, then the
WSX
data on that virtual circuit is sent uncompressed. See Setting Configuration Parameters on
page 29-22 for information on enabling compression.
Compression is not supported on the 2 universal serial
port Omni Switch/Router
WSX
WSX
WSX
specifications) to see if it supports compression. If
FRF.9
compresses all data except
Note
WSX
modules.
board at the hardware
WSX
) has its own
STAC 9705
) without performance degradation. An 8-port
) is possible through swapping within
WSX
will query the Frame Relay device on the
(management) data. If it doesn't, then
DLCMI
and Omni Switch/Router
Compression
that can
DRAM
Page 29-5