Data Compresion on Allied Telesyn Routers

Software link compression is available on most of the Allied Telesyn AR series routers, for upto 128kbps worth of link.

Beyond 128kbps it is strongly recomended that you install a hardware compresion card.

The software will let you apply compresion,

Do not apply compresion to a link layer, or PPP bundle that is carrying encripted data.

Do not try to compress already compresed traffic.

Will give around a 2:1 performance gain with Roadrunner Profesional GUI clients.

Enabling compresion functions

Software Compression

Before you can use compresion, you must configure the ENCO modual for STAC compresion.

set ENCO sw StacChannels=2
create config=rrboot.cfg

You have to reboot before changes are efective.

Hardware compresion modual

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Configure compresion

Compress a PPP bundle

set ppp=0 comp=on

Compress an underlining link

set ppp=o comp=link
set ppp=0 over=syn0 comp=on

Notes

Compresion ratio acheved depends hevilly on the datastreem. You can check the compresion obtained by looking at the result of the following command.

show ppp=1 count

Compare the values for InOctets, and OutOctets in the Interface, and CCP sections of this report.