(ASCEND) TNT and PPP connections

[Martin Pauly <pauly@HRZ.Uni-Marburg.DE>]

Hi everyone,

I am trying to set up our new TNT to build
PPP connections on inbound calls. Calls
are coming through two E1 PRI lines,
with both analog and ISDN equipment at
the customer's place. Software is 2.1.9

There are several things that I haven't quite
understood from the Docs:

1. Local IP-Adress: How does the sytem-ip-address
   in the system profile interact with those ones
   assigned to the ethernet interfaces? Does it 
   relate to the On-board-Shelf-Controller in 
   some way? 

2. Do I have to turn on IP-Routing to enable
   transparent Internet access for my customers?

3. I found two different sets of PPP options in
   the profiles: one in the answer-defaults profile,
   another one for each connection. Actually, I'm
   not quit sure whether I need 'connections' at all
   as I have only inbound calls. How these setting
   interact? (values see below).

4. I *can* run the machine as a terminal server,
   so I figured the RADIUS section is o.k. Problems
   seem to occur only when I try to build up a PPP
   connection. Unfortunately the PPP-related debug
   commands (PPPinfo, PPPdump etc.) don't work. 
   I tried turning on debugging generally and also
   for some of the cards, successfully. But I found
   no clue how to turn on debug options for PPP.

5. Related: I tried debugging communications from
   the client side, using Trumpet Winsock (16 bit)
   as client. It allows lots of tracing -- is this
   sufficient or are there even better tools out there?

5. I am only half-way through the RFC describing PPP,
   so the hexdumps from Trumpet Winsock aren't really 
   useful right now. So maybe someone immediately 
   recognizes some newbie-bug in my PPP-configuration:

admin> list
[in ANSWER-DEFAULTS]
use-answer-for-all-defaults = no
force-56kbps = no
profiles-required = no
clid-auth-mode = ignore
ppp-answer = { yes pap-ppp-auth yes 0 none 1524 no 600 600 }
mp-answer = { no 1 2 }
mpp-answer = { no quadratic transmit 1 1 15 5 10 70 }
fr-answer = { yes }
tcp-clear-answer = { yes }
ara-answer = { no }
v120-answer = { yes 256 }
ip-answer = { yes yes yes 1 }
ipx-answer = { no router-peer }
session-info = { "" "" no 600 input-only-idle 120 0 }
x75-answer = { yes 7 10 1000 1024 }
framed-only = no

As far as I could, I mapped all settings 
from our three MAXen 4000 (which are running 
happily, BTW). Seems to me that I've overlooked
something.

Any help woud be greatly appreciated
Thanks, Martin

-- 
  Martin Pauly
  Hochschulrechenzentrum               Phone:  49-6421-28-3527             
  der Philipps-Universitaet Marburg    Fax:    49-6421-28-6994            
  Hans-Meerwein-Strasse                E-Mail: pauly@HRZ.Uni-Marburg.DE  
  35032 Marburg
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