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Conference irocz::netrider

Title:NetRider --- Remote Network Access Conference
Notice:Please use keywords! See Note 2 for Directory of Important Notes
Moderator:LAVC::CAHILLON
Created:Tue Jan 24 1995
Last Modified:Mon Jun 02 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:554
Total number of notes:2264

535.0. "DS700-PPP vs. Ascend Max 4004, connection speed" by NETRIX::"[email protected]" (Mike Mastroianni) Tue Apr 08 1997 16:45

Hello,
     I am an on-site engineer for an ISP in Massachusetts, we currently are
using a Ascend Max 4004 for dial up accounts. I am trying to configure a
Digital
solution for dial-up, using a DS700 and a Zoom modem Model 2836. I have worked
with support and have a configured a stable PPP connection. My problem is the
DS700 connection transfers data at a much slower rate than the Max connection.
Here is the server and port config for DS700 and the modem setup. If you have
any
ideas I would appreciate them�

Server�

Network Access SW V2.0 for DS700-08 BL10C-40  ROM V4.0-0  Uptime:   0 04:08:51
 
Address:   08-00-2B-3B-FB-0D   Name:   DS700_EXT          Number:     0
 
Identification:
 
Circuit Timer:            80           Password Limit:            3
Console Port:              1           Prompt:           ds700_ext>
Inactivity Timer:         30           Queue Limit:             100
Keepalive Timer:          20           Retransmit Limit:          8
Multicast Timer:          30           Session Limit:            64
Node Limit:              200           Software:             WWENG2
 
Service Groups:   0
 
Enabled Characteristics:
Announcements,  Broadcast,  Dump,  Lock
 
 
 
Port  8:                               Server: DS700_EXT
 
Character Size:            8           Input Speed:               9600
Flow Control:            CTS           Output Speed:              9600
Parity:                 None           Modem Control:          Enabled
Stop Bits:           Dynamic
 
Access:                Local           Local Switch:              None
Backwards Switch:       None           Name:                    PORT_8
Break:              Disabled           Session Limit:                4
Forwards Switch:        None           Type:                      Ansi
Default Protocol:        PPP           Default Menu:              None
                                       Dialer Script:             None
Dedicated Service: PPP
 
Authorized Groups:   0
(Current)  Groups:   0
 
Enabled Characteristics:
Autobaud,  Autoconnect,  Autoprompt,  Broadcast,  Failover,
Input Flow Control,  Lock,  Loss Notification,  Message Codes,
Output Flow Control,  PPP,  Verification
 
 
Port  8:                               Server: DS700_EXT
 
IPCP Characteristics:
 
IPCP:                              Enabled
Passive Open:                     Disabled
Restart Timer:                           3 seconds
Max Configure:                          10 transmissions
Max Terminate:                           2 transmissions
Max Failure:                            10 transmissions
 
IPCP Options:               Local:
 
Negotiate Address:         Enabled
Remote IP Address:     207.78.0.18
Compress Header:          Disabled
Compress States:                16
 
 

Modem�

AT&V 
ACTIVE PROFILE:
B1 E1 L1 M1 N1 Q0 T V1 W0 X4 Y0 &C1 &D3 &G0 &J0 &K3 &Q5 &R1 &S1 &T5 &X0 &Y0
S00:001 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002 S07:050 S08:002
S09:006
S10:014 S11:095 S12:050 S18:000 S25:005 S26:001 S36:007 S37:000 S38:020
S44:020
S46:138 S48:007 S95:000 

STORED PROFILE 0:
B1 E1 L1 M1 N1 Q0 T V1 W0 X4 Y0 &C1 &D3 &G0 &J0 &K3 &Q5 &R1 &S1 &T5 &X0 
S00:001 S02:043 S06:002 S07:050 S08:002 S09:006 S10:014 S11:095 S12:050
S18:000
S36:007 S37:000 S40:168 S41:195 S46:138 S95:000 

STORED PROFILE 1:
B1 E1 L1 M1 N1 Q0 T V1 W0 X4 Y0 &C0 &D0 &G0 &J0 &K3 &Q5 &R1 &S0 &T5 &X0 
S00:000 S02:043 S06:002 S07:050 S08:002 S09:006 S10:014 S11:095 S12:050
S18:000
S36:007 S37:000 S40:168 S41:195 S46:138 S95:000 

TELEPHONE NUMBERS:
0=                                     1=
2=                                     3=

OK

                                                  Thanks�

                                                        Mike Mastroianni

[Posted by WWW Notes gateway]
T.RTitleUserPersonal
Name
DateLines
535.1Port speed is the problemCLOPAY::PYRIKDan PyrikTue Apr 08 1997 17:255
Your input and output speeds for port 8 are set at 9600. A DS700 can support
speeds up to 115200. You can issue the command  CHANGE PORT 8 SPEED 115200
or you can use the Access Server Manager to change the port speed.
Good luck,
 Dan Pyrik
535.2Additional steps -- or use ASM.IROCZ::D_NELSONDave Nelson LKG1-3/A11 226-5358Wed Apr 09 1997 11:5819
RE: .1

> You can issue the command CHANGE PORT 8 SPEED 115200...

You will also need the command CHANGE PORT 8 AUTOBAUD DISABLED.

You must then make a "reverse" connection from the port to the modem (LAT
or Telnet), allowing the modem to autobaud to the DECserver's port speed 
(115,200) and then force the momed to "lock" at this DTE-side baud rate.  
Note this is independent of the telephone line baud rate.

> or you can use the Access Server Manager to change the port speed.

Which will do all the additional things I've mentioned!

Regards,

Dave

535.3Additional steps, Part 2LAVC::CAHILLJim CahillWed Apr 09 1997 14:559
One more thing:  do a LIST PORT x LCP and confirm the "Character Map"
setting is not FFFFFFFF.  Since you're using hardware flow control, the
best setting for this value would be 0.

Any bit set in this map tells the DECserver to handle the corresponding
character in a special manner which effectively doubles the required
bandwidth, not to mention the extra interrupt handling overhead.

Jim
535.4ASM helped, but still not as fast...MIPSBX::"[email protected]"Mike MastroianniMon Apr 14 1997 12:2114
Thanks for you responses to this problem, I pulled down the ASM
V2.2, "this product is terrific" and configured my DS700. Transfers 
work much faster now, and the port speed connects at 115,000. But 
if I connect to the Max4004, and pull down a 1.5MB file, it transfers
at 2.9 to 3.0Kb/sec, on the DS700 (same file, same modem 
speed-26400), it comes down at 2.4 to 2.6Kb/sec. This is not a major 
issue for me, but if you have any thoughts I would be interested in them�

			Thanks again for the help�

					Mike Mastroianni 


[Posted by WWW Notes gateway]
535.5Compression?IROCZ::D_NELSONDave Nelson LKG1-3/A11 226-5358Tue Apr 15 1997 14:1714
RE: .4

> ...it comes down at 2.4 to 2.6Kb/sec.

Have the modems sucessfully negotiated some form of data comopression, e.g.
V.42bis?  I realize that this should be the same for the DECserver and the
Ascend MAX.  I note that 2.6 Kb/sec (and I assume you mean _bytes_ here)
is about the raw modem speed of 26Kb/sec (where I mean _bits_).  How
"compessable" is the data?

Regards,

Dave