by [posted to linux.dev.ppp, got no response]
I dial in to a Xylogics Annex server with the following script:
/usr/sbin/pppd -d /dev/modem 57600 crtscts modem defaultroute \
asyncmap 0x40
/var/adm/debug says this:
Apr 17 23:30:48 bigtower pppd[683]: sent [LCP ConfReq id=0x1 <mru 1500>
<asyncmap 0x40> <magic 0xab5dff15> <pcomp> <accomp>]
Apr 17 23:30:48 bigtower pppd[683]: rcvd [LCP ConfReq id=0x2 <asyncmap 0x0>
<magic 0x21ec534e> <pcomp> <accomp>]
Apr 17 23:30:48 bigtower pppd[683]: sent [LCP ConfAck id=0x2 <asyncmap 0x0>
<magic 0x21ec534e> <pcomp> <accomp>]
Apr 17 23:30:48 bigtower pppd[683]: rcvd [LCP ConfAck id=0x1 <mru 1500>
<asyncmap 0x40> <magic 0xab5dff15> <pcomp> <accomp>]
Apr 17 23:30:48 bigtower pppd[683]: sent [IPCP ConfReq id=0x1 <addr
130.161.127.189> <compress VJ 0f 01>]
Apr 17 23:30:48 bigtower pppd[683]: sent [CCP ConfReq id=0x1]
Apr 17 23:30:48 bigtower pppd[683]: rcvd [LCP ProtRej id=0x3 80 fd 00 04]
Apr 17 23:30:51 bigtower pppd[683]: sent [IPCP ConfReq id=0x1 <addr
130.161.127.189> <compress VJ 0f 01>]
Apr 17 23:30:51 bigtower pppd[683]: rcvd [IPCP ConfAck id=0x1 <addr
130.161.127.189> <compress VJ 0f 01>]
Apr 17 23:30:52 bigtower pppd[683]: rcvd [IPCP ConfReq id=0x4 <compress VJ
0f 01> <addr 130.161.2.3>]
Apr 17 23:30:52 bigtower pppd[683]: sent [IPCP ConfAck id=0x4 <compress VJ
0f 01> <addr 130.161.2.3>]
I patched the kernel to report which characters were being received with
escapes. 12.6% was escaped, ie all characters under 32 and the escape
character itself, plus one other. I made it keep a list to be sure.
Now I seem to have requested that only ^H be escaped.
What's going wrong?
The maintainers of the Xylogics machine have looked in the manual and found
out that it's configured to escape all control-characters by default, unless
requested otherwise. Which, AFAIK, I have done.
Right now my throughput on a 28k8 link is 2.8k/s, which imho is too low.
Thanks for your interest.
--
Delft University of Technology, department of Applied Physics
Phone: +31-15-2133685 / Donkerstraat 9a, 2611TE, Delft, The Netherlands
Inspice et cautus eris - D11T'95