> On Fri, 26 Mar 1999, Jan Kratochvil wrote:
>
> > > Is there a cross-reference between ppp-compress- numbers and module
> > > names? Or any way of discovering this information?
> >
> > alias ppp-compress-21 bsd_comp
> > alias ppp-compress-24 ppp_deflate
>
> Thanks, but (1) they are not all the numbers, and (2) I would like
> to know a source other than you for this information.
(1) I know, probably also:
alias ppp-compress-26 ppp_deflate
But bsd_comp and ppp_deflate all all the modules I know about that exist
for Linux. Are there some other maybe even experimental ones? The problem
is that Cisco IOS is supporting neither bsd_comp nor ppp_defulate. But I've
heard that it supports for example:
RFC 1974 Stac LZS August 1996
Is there some implementation? BTW Does anyone know ALL the compression
protocols supported by latest Cisco IOS? I'm not able to find such information
on their web, sorry.
What's bad for me that Bill's Winblows for example support STAC compression
which is probably worse that bsd_comp or ppp_deflate but the important fact
is that against Cisco router it can at least use ANY compression in contrast
to Linux.
(2) I surely got it from modprobe error messages and pppd debug dumps but
complete information can be found in:
-----------------------------------------------------------------------------
grep CI_ /usr/include/linux/ppp-comp.h
-----------------------------------------------------------------------------
#define CI_BSD_COMPRESS 21 /* config. option for BSD-Compress */
#define CI_DEFLATE 26 /* config option for Deflate */
#define CI_DEFLATE_DRAFT 24 /* value used in original draft RFC */
#define CI_PREDICTOR_1 1 /* config option for Predictor-1 */
#define CI_PREDICTOR_2 2 /* config option for Predictor-2 */
-----------------------------------------------------------------------------
RFC 1962 PPP Compression June 1996
CCP Option Compression type
0 OUI
1 Predictor type 1
2 Predictor type 2
3 Puddle Jumper
4-15 unassigned
16 Hewlett-Packard PPC
17 Stac Electronics LZS
18 Microsoft PPC
19 Gandalf FZA
20 V.42bis compression
21 BSD LZW Compress
255 Reserved
-----------------------------------------------------------------------------
RFC 1979 PPP Deflate August 1996
Type
26 for PPP Deflate.
-----------------------------------------------------------------------------
Some information I used is from Pavel Ruzicka <[EMAIL PROTECTED]>.
Bye, Lace
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