Data Compression - Alcatel Omni Switch/Router User Manual

Data Compression

Data 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 (
that can store up to 100 compression histories (on a 4-port
performance. An 8-port
degradation.
The will only compress data if you enable compression through software and the
WSX
bridge/router on the other end of the connection supports standard Frame Relay (FRF.9) or
PPP (STAC-LZS) 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, this bridge/router will not recognize the
data and will automatically drop the unrecognizable frames.
If you enable compression, the
end of the circuit to determine whether it supports compression. If it does, the
compress all data except frame
does not support compression, data on that connection will be sent uncompressed. Refer to
either Chapter 29, "Managing Frame Relay," or Chapter 30, "Point-To-Point Protocol," for
information on enabling compression.
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can store up to 200 compression histories without performance
WSX
will query the Frame Relay or PPP device on the other
WSX
(management) data and PPP control messages. If it
DLCMI
Note
Compression is not supported on the Omni
Switch/Router
WSX-S-2W
WSX
) has its own memory (
STAC 9705
) without degrading
WSX
modules.
board at the hardware
DRAM)
will
WSX