A question about compression in PPP

Miles Lane (miles@amazon.com)
Sat, 04 Sep 1999 12:43:34 -0700

Am I correct in interpretting the following PPP debug output?
I think it shows my client requesting first Compress compression
and then Deflate compression. It appears that Compress is
being rejected. There is no message stating whether the
deflate compression was accepted. Is Deflate active on my
connection? What does the line ("LCP ProtRej") indicate?
Lastly, what does the line ("deflate(old#) 15") mean?
Do I need to update my Deflate module?

Connect: ppp0 <--> /dev/modem
sent [LCP ConfReq id=0x1 <mru 1024> <asyncmap 0x0> <magic 0xa7979e73>
<pcomp> <accomp>]
rcvd [LCP ConfReq id=0x18 <asyncmap 0xa0000> <auth chap MD5> <magic
0x66dd0133> <pcomp> <accomp>]
sent [LCP ConfAck id=0x18 <asyncmap 0xa0000> <auth chap MD5> <magic
0x66dd0133> <pcomp> <accomp>]
rcvd [LCP ConfNak id=0x1 <mru 1500>]
sent [LCP ConfReq id=0x2 <asyncmap 0x0> <magic 0xa7979e73> <pcomp>
rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> <magic 0xa7979e73> <pcomp>
rcvd [CHAP Challenge id=0x1 <aa59889167ffba910a806aad884928de>, name =
sent [CHAP Response id=0x1 <52abd495fccaff656edf58136fd0f0ca>, name =
rcvd [CHAP Success id=0x1 ""]
sent [IPCP ConfReq id=0x1 <addr> <compress VJ 0f 01>]
sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15> <bsd v1 15>]
rcvd [IPCP ConfReq id=0xf5 <addr xxx.xxx.xxx.xxx>]
sent [IPCP ConfAck id=0xf5 <addr xxx.xxx.xxx.xxx>]
rcvd [IPCP ConfRej id=0x1 <compress VJ 0f 01>]
sent [IPCP ConfReq id=0x2 <addr>]
rcvd [LCP ProtRej id=0x19 80 fd 01 01 00 0f 1a 04 78 00 18 04 78 00 15
03 2f]
rcvd [IPCP ConfNak id=0x2 <addr xxx.xxx.xxx.xxx>]
sent [IPCP ConfReq id=0x3 <addr xxx.xxx.xxx.xxx>]
rcvd [IPCP ConfAck id=0x3 <addr xxx.xxx.xxx.xxx>]
local IP address xxx.xxx.xxx.xxx
remote IP address xxx.xxx.xxx.xxx
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