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Hello all,
I'm attempting to get a PPP dial-on-demand connection (using one-way CHAP
authentication initiated by the called party) to work with an AS/400
(calling party) at V4R4 using a 2720 V.24 port and the 7852-400 IBM modem.
All goes well through the LCP negotiation phase. Within the authentication
phase, the AS/400 receives a CHAP challenge and returns a CHAP response. It
then repeats the CHAP response. The called system for some reason issues a
new CHAP challenge, for which the AS/400 returns a number of CHAP responses
(as defined by the link's config). The AS/400 then gives up and issues a
termination. One clue may be the mysterious discard request issued by the
AS/400 in record 12. I've also tried using PAP, but it also times out and
also has the strange discard request to an ID no where else in the trap.
I've applied all PPP related PTFs per IBM's site. The com trap is always
the same. Any ideas? Below is part of the com trap:
Record Data Record Record DLC Frame Address
Control
Number S/R Length Status Timer Format Field Field
Protocol ID
------ --- ------ ---------- --------------- --------- ------- ------
- ------------
8 S 24 00000000 12:23:02.01067 PPP FF UI
C021 (LCP)
LCP . . . . . : Code: 01 (Configure Request) ID: 0B
Length: 20
Option . . . . : Type: 01 (MRU) Length: 4
MRU: 2048
Option . . . . : Type: 02 (Async Map) Length: 6
Async Map: 00000000
Option . . . . : Type: 05 (Magic Number) Length: 6
Magic Number:
Data . . . . . : FF03C021010B0014 0104080002060000
00000506B800DCC4
9 R 27 00000000 12:23:02.29147 PPP FF UI
C021 (LCP)
LCP . . . . . : Code: 01 (Configure Request) ID: 16
Length: 23
Option . . . . : Type: 01 (MRU) Length: 4
MRU: 1514
Option . . . . : Type: 02 (Async Map) Length: 6
Async Map: 00000000
Option . . . . : Type: 03 (CHAP Protocol) Length: 5
CHAP Protocol: C223
Option Data . : 05
Option . . . . : Type: 07 (Protocol Comp) Length: 2
Option . . . . : Type: 08 (Addr/Cntrl Comp) Length: 2
Data . . . . . : FF03C02101160017 010405EA02060000
00000305C2230507 020802
10 R 24 00000000 12:23:02.31661 PPP FF UI
C021 (LCP)
LCP . . . . . : Code: 02 (Configure Ack) ID: 0B
Length: 20
Option . . . . : Type: 01 (MRU) Length: 4
MRU: 2048
Option . . . . : Type: 02 (Async Map) Length: 6
Async Map: 00000000
Option . . . . : Type: 05 (Magic Number) Length: 6
Magic Number:
Data . . . . . : FF03C021020B0014 0104080002060000
00000506B800DCC4
11 S 27 00000000 12:23:02.82842 PPP FF UI
C021 (LCP)
LCP . . . . . : Code: 02 (Configure Ack) ID: 16
Length: 23
Option . . . . : Type: 01 (MRU) Length: 4
MRU: 1514
Option . . . . : Type: 02 (Async Map) Length: 6
Async Map: 00000000
Option . . . . : Type: 03 (CHAP Protocol) Length: 5
CHAP Protocol: C223
Option Data . : 05
Option . . . . : Type: 07 (Protocol Comp) Length: 2
Option . . . . : Type: 08 (Addr/Cntrl Comp) Length: 2
Data . . . . . : FF03C02102160017 010405EA02060000
00000305C2230507 020802
12 S 10 00000000 12:23:02.88697 PPP
C021 (LCP)
LCP . . . . . : Code: 0B (Discard Request) ID: 0C
Length: 8
Magic Number: B800DCC4
Data . . . . . : C0210B0C0008B800 DCC4
13 R 17 00000000 12:23:04.28520 PPP FF UI
C223 (CHAP)
CHAP . . . . . : Code: 01 (CHAP Challenge) ID: 17
Length: 13
Value Size: 8 CHAP Value:
3133 303137353539
Data . . . . . : FF03C2230117000D 0831333031373535 39
14 S 30 00000000 12:23:04.90402 PPP
C223 (CHAP)
CHAP . . . . . : Code: 02 (CHAP Response) ID: 17
Length: 28
LCP . . . . . : Code: 01 (Configure Request) ID: 16
Length: 23
Option . . . . : Type: 01 (MRU) Length: 4
MRU: 1514
Option . . . . : Type: 02 (Async Map) Length: 6
Async Map: 00000000
Option . . . . : Type: 03 (CHAP Protocol) Length: 5
CHAP Protocol: C223
Option Data . : 05
Option . . . . : Type: 07 (Protocol Comp) Length: 2
Option . . . . : Type: 08 (Addr/Cntrl Comp) Length: 2
Data . . . . . : FF03C02101160017 010405EA02060000
00000305C2230507 020802
10 R 24 00000000 12:23:02.31661 PPP FF UI
C021 (LCP)
LCP . . . . . : Code: 02 (Configure Ack) ID: 0B
Length: 20
Option . . . . : Type: 01 (MRU) Length: 4
MRU: 2048
Option . . . . : Type: 02 (Async Map) Length: 6
Async Map: 00000000
Option . . . . : Type: 05 (Magic Number) Length: 6
Magic Number:
Data . . . . . : FF03C021020B0014 0104080002060000
00000506B800DCC4
11 S 27 00000000 12:23:02.82842 PPP FF UI
C021 (LCP)
LCP . . . . . : Code: 02 (Configure Ack) ID: 16
Length: 23
Option . . . . : Type: 01 (MRU) Length: 4
MRU: 1514
Option . . . . : Type: 02 (Async Map) Length: 6
Async Map: 00000000
Option . . . . : Type: 03 (CHAP Protocol) Length: 5
CHAP Protocol: C223
LCP . . . . . : Code: 01 (Configure Request) ID: 16
Length: 23
Option . . . . : Type: 01 (MRU) Length: 4
MRU: 1514
Option . . . . : Type: 02 (Async Map) Length: 6
Async Map: 00000000
Option . . . . : Type: 03 (CHAP Protocol) Length: 5
CHAP Protocol: C223
Option Data . : 05
Option . . . . : Type: 07 (Protocol Comp) Length: 2
Option . . . . : Type: 08 (Addr/Cntrl Comp) Length: 2
Data . . . . . : FF03C02101160017 010405EA02060000
00000305C2230507 020802
10 R 24 00000000 12:23:02.31661 PPP FF UI
C021 (LCP)
LCP . . . . . : Code: 02 (Configure Ack) ID: 0B
Length: 20
Option . . . . : Type: 01 (MRU) Length: 4
MRU: 2048
Option . . . . : Type: 02 (Async Map) Length: 6
Async Map: 00000000
Option . . . . : Type: 05 (Magic Number) Length: 6
Magic Number:
Data . . . . . : FF03C021020B0014 0104080002060000
00000506B800DCC4
11 S 27 00000000 12:23:02.82842 PPP FF UI
C021 (LCP)
LCP . . . . . : Code: 02 (Configure Ack) ID: 16
Length: 23
Option . . . . : Type: 01 (MRU) Length: 4
MRU: 1514
Option . . . . : Type: 02 (Async Map) Length: 6
Async Map: 00000000
Option . . . . : Type: 03 (CHAP Protocol) Length: 5
CHAP Protocol: C223
Option Data . : 05
Option . . . . : Type: 07 (Protocol Comp) Length: 2
Option . . . . : Type: 08 (Addr/Cntrl Comp) Length: 2
Data . . . . . : FF03C02102160017 010405EA02060000
00000305C2230507 020802
12 S 10 00000000 12:23:02.88697 PPP
C021 (LCP)
LCP . . . . . : Code: 0B (Discard Request) ID: 0C
Length: 8
Magic Number: B800DCC4
Data . . . . . : C0210B0C0008B800 DCC4
13 R 17 00000000 12:23:04.28520 PPP FF UI
C223 (CHAP)
CHAP . . . . . : Code: 01 (CHAP Challenge) ID: 17
Length: 13
Value Size: 8 CHAP Value:
3133 303137353539
Data . . . . . : FF03C2230117000D 0831333031373535 39
14 S 30 00000000 12:23:04.90402 PPP
C223 (CHAP)
CHAP . . . . . : Code: 02 (CHAP Response) ID: 17
Length: 28
Value Size: 16 CHAP Value:
C40E D0F8A70C0DA61212
Name: 4D41525449 4E4A
Data . . . . . : C2230217001C10C4 0ED0F8A70C0DA612
12C4CDD6A7E9074D 415254494E4A
15 S 30 00000000 12:23:07.95596 PPP
C223 (CHAP)
CHAP . . . . . : Code: 02 (CHAP Response) ID: 17
Length: 28
Value Size: 16 CHAP Value:
C40E D0F8A70C0DA61212
C4CDD6A7E907
Name: 4D41525449 4E4A
Data . . . . . : C2230217001C10C4 0ED0F8A70C0DA612
12C4CDD6A7E9074D 415254494E4A
16 R 17 00000000 12:23:09.67320 PPP FF UI
C223 (CHAP)
CHAP . . . . . : Code: 01 (CHAP Challenge) ID: 18
Length: 13
Value Size: 8 CHAP Value:
3234 653637333335
Data . . . . . : FF03C2230118000D 0832346536373333 35
17 S 30 00000000 12:23:09.93691 PPP
C223 (CHAP)
CHAP . . . . . : Code: 02 (CHAP Response) ID: 18
Length: 28
Value Size: 16 CHAP Value:
1752 8357AA39221663BB
4B985D396D12
Name: 4D41525449 4E4A
Data . . . . . : C2230218001C1017 528357AA39221663
BB4B985D396D124D 415254494E4A
18 S 30 00000000 12:23:10.98820 PPP
C223 (CHAP)
CHAP . . . . . : Code: 02 (CHAP Response) ID: 18
Length: 28
Value Size: 16 CHAP Value:
1752 8357AA39221663BB
4B985D396D12
Name: 4D41525449 4E4A
Data . . . . . : C2230218001C1017 528357AA39221663
BB4B985D396D124D 415254494E4A
It then repeats this response a few more times and finally issues a
terminate request, which is acknowledged by the called system.
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