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(ASCEND) P75 conn to MAX slower than to PM?
Hi there,
I use a P75 to connect to different ISPs (non concurently).
Two ISPs have MAXs & PRIs and another has a Portmaster
w/5BRI cards. I've noticed that the connects to the Portmaster
are much quicker than connections to either of the MAX-based
ISPs (~2 sec total vs. ~5 sec total). (one is UUNet and the other is a local
provider).
The bridisplay + wandisplay data below seems to suggest
that the P75 re-transmits its initial LCP packet twice (total of
three times) before recieving a response from the MAX.
These traces were made using a "test" profile on
my side that is designed to fail the LCP negotiations
(it refuses to do PAP) to try and reduce the scope
of the problem.
The part that I am concerned about can be seen in
the "P75 calling Max" listing starting at time:4617.90.
The P75's first LCP request seems to have to be retransmitted
twice (total of 3 times) before the MAX responds to it.
The same symptom is seen calling a local ISP's MAX
and calling the local UUNet number.
The second listing shows the WANNEXT output from the local
ISP's MAX for the *same* call as the P75 calling MAX listing.
Notice it seems to only see the final transmission of the P75's
first LCP request. I assume it was the final transmit solely
from the fact that there was no *observeable* delay in the
streaming of the MAX's debug output to my screen (i.e a
risky assumption).
The third listing shows what the P75 says is happening during a
connect to the local, Portmaster based ISP. It was made using the
same profile as above (just changing the phone number).
Notice that at time:4362.88 the P75 sends its first LCP request
and the Portmaster resonds -- no retransmissions needed.
I'm hoping for assistance with the following:
Is it normal for a P75 to retransmit its first LCP request when
calling into a MAX w/PRI service?
If not, what settings should I look at changing to
fix it?
Is there a way to see the LAPB headers for packets on
the P75 and on the MAX (I'd like to see the HDLC sequence
numbers that the P75 is sending and which ones the MAX
is receiving)?
If not, is this something the telco (USWest, 5ESS
w/NI-1) should be able to provide?
Thanks in advance,
Bill
====================================================
P75 calling Max:
BRI-XMIT-0/2:(task: 2C9E90, time: 4616.81) 30 octets @ 2CFDD4
[0000]: 08 01 0A 05 04 02 88 90 2C 07 32 32 33 32 30 30
[0010]: 36 6C 0B A1 39 37 30 32 32 33 30 30 32 38
BRI-RCV-0: (task: 2C9E90, time: 4616.81) 4 octets @ 2D0E50
[0000]: 00 D1 01 32
BRI-RCV-0: (task: 205914, time: 4617.62) 11 octets @ 2CFFD0
[0000]: 02 D1 4C 32 08 01 8A 02 18 01 89
BRI-XMIT-0: (task: 205914, time: 4617.72) 4 octets @ 248C50
[0000]: 02 D1 01 4E
BRI-RCV-0: (task: 205914, time: 4617.73) 11 octets @ 2CFDD0
[0000]: 02 D1 4E 32 08 01 8A 01 34 01 01
BRI-XMIT-0: (task: 23F850, time: 4617.84) 4 octets @ 2C34D0
[0000]: 02 D1 01 50
BRI-RCV-0: (task: 205914, time: 4617.85) 11 octets @ 2CFF10
[0000]: 02 D1 50 32 08 01 8A 07 34 01 3F
BRI-XMIT-0/1:(task: 2546D0, time: 4617.87) 4 octets @ 2BBDD0
[0000]: 00 D1 32 52
BRI-XMIT-0/2:(task: 2546D0, time: 4617.87) 4 octets @ 2BBDD4
[0000]: 08 01 0A 0F
BRI-RCV-0: (task: 2476D0, time: 4617.88) 4 octets @ 2CFA50
[0000]: 00 D1 01 34
XMIT-21:(task: 231250, time: 4617.90) 21 octets @ 266F14
[0000]: FF 03 C0 21 01 01 00 11 01 04 05 F4 13 09 03 00
[0010]: C0 7B 5D FB A9
XMIT-21:(task: 205914, time: 4618.83) 21 octets @ 266F14
[0000]: FF 03 C0 21 01 01 00 11 01 04 05 F4 13 09 03 00
[0010]: C0 7B 5D FB A9
XMIT-21:(task: 205914, time: 4620.89) 21 octets @ 266F14
[0000]: FF 03 C0 21 01 01 00 11 01 04 05 F4 13 09 03 00
[0010]: C0 7B 5D FB A9
RECV-21:(task: 205914, time: 4620.91) 37 octets @ 262BE0
[0000]: FF 03 C0 21 01 02 00 21 00 04 00 00 01 04 05 F4
[0010]: 03 04 C0 23 11 04 05 F4 13 09 03 00 C0 7B 63 3A
[0020]: 70 17 04 07 01
RECV-21:(task: 205914, time: 4620.91) 21 octets @ 2631FC
[0000]: FF 03 C0 21 02 01 00 11 01 04 05 F4 13 09 03 00
[0010]: C0 7B 5D FB A9
XMIT-21:(task: 25BE90, time: 4620.92) 20 octets @ 266F14
[0000]: FF 03 C0 21 04 02 00 10 00 04 00 00 03 04 C0 23
[0010]: 11 04 05 F4
RECV-21:(task: 22FF50, time: 4620.93) 8 octets @ 263818
[0000]: FF 03 C0 21 05 03 00 04
XMIT-21:(task: 22FF50, time: 4620.93) 8 octets @ 266F14
[0000]: FF 03 C0 21 06 03 00 04
======================================================
This is the Max side of the same call:
> wann 128
Display the first 128 bytes of WAN messages for the NEXT call
>RECV-189:: 21 octets @ 80002C2E
[0000]: FF 03 C0 21 01 01 00 11 01 04 05 F4 13 09 03 00
[0010]: C0 7B 5D FB A9
XMIT-189:: 37 octets @ 8002E568
[0000]: FF 03 C0 21 01 01 00 21 00 04 00 00 01 04 05 F4
[0010]: 03 04 C0 23 11 04 05 F4 13 09 03 00 C0 7B 63 3A
[0020]: 70 17 04 BD 00
XMIT-189:: 21 octets @ 8002F1A8
[0000]: FF 03 C0 21 02 01 00 11 01 04 05 F4 13 09 03 00
[0010]: C0 7B 5D FB A9
RECV-189:: 20 octets @ 8000327C
[0000]: FF 03 C0 21 04 01 00 10 00 04 00 00 03 04 C0 23
[0010]: 11 04 05 F4
XMIT-189:: 8 octets @ 8002F1A8
[0000]: FF 03 C0 21 05 02 00 04
RECV-189:: 8 octets @ 800038CA
[0000]: FF 03 C0 21 06 02 00 04
===================================================
P75 calling Livingston Portmaster
BRI-XMIT-0/2:(task: 205914, time: 4361.26) 30 octets @ 2D06D4
[0000]: 08 01 09 05 04 02 88 90 2C 07 32 32 33 38 33 35
[0010]: 36 6C 0B A1 39 37 30 32 32 33 30 30 32 38
BRI-RCV-0: (task: 2C9E90, time: 4361.27) 4 octets @ 2CFDD0
[0000]: 00 D1 01 2C
BRI-RCV-0: (task: 25BE90, time: 4362.68) 11 octets @ 2D0BD0
[0000]: 02 D1 44 2C 08 01 89 02 18 01 89
BRI-XMIT-0: (task: 205914, time: 4362.78) 4 octets @ 259E50
[0000]: 02 D1 01 46
BRI-RCV-0: (task: 205914, time: 4362.84) 8 octets @ 2CFE50
[0000]: 02 D1 46 2C 08 01 89 07
BRI-XMIT-0/1:(task: 2546D0, time: 4362.85) 4 octets @ 2CA290
[0000]: 00 D1 2C 48
BRI-XMIT-0/2:(task: 2546D0, time: 4362.85) 4 octets @ 2CA294
[0000]: 08 01 09 0F
BRI-RCV-0: (task: 22FF50, time: 4362.86) 4 octets @ 2D0210
[0000]: 00 D1 01 2E
XMIT-20:(task: 231250, time: 4362.88) 21 octets @ 266F14
[0000]: FF 03 C0 21 01 01 00 11 01 04 05 F4 13 09 03 00
[0010]: C0 7B 5D FB A9
RECV-20:(task: 2442D0, time: 4363.41) 21 octets @ 262BE0
[0000]: FF 03 C0 21 02 01 00 11 01 04 05 F4 13 09 03 00
[0010]: C0 7B 5D FB A9
RECV-20:(task: 2442D0, time: 4363.42) 18 octets @ 2631FC
[0000]: FF 03 C0 21 01 01 00 0E 05 06 95 94 A7 49 03 04
[0010]: C0 23
XMIT-20:(task: 25BE90, time: 4363.42) 12 octets @ 266F14
[0000]: FF 03 C0 21 04 01 00 08 03 04 C0 23
RECV-20:(task: 205914, time: 4363.44) 19 octets @ 263818
[0000]: FF 03 C0 21 01 02 00 0F 03 05 C2 23 05 05 06 95
[0010]: 94 A7 49
XMIT-20:(task: 22FF50, time: 4363.44) 13 octets @ 266F14
[0000]: FF 03 C0 21 04 02 00 09 03 05 C2 23 05
RECV-20:(task: 205914, time: 4363.46) 14 octets @ 263E34
[0000]: FF 03 C0 21 01 03 00 0A 05 06 95 94 A7 49
XMIT-20:(task: 25BE90, time: 4363.46) 14 octets @ 266F14
[0000]: FF 03 C0 21 02 03 00 0A 05 06 95 94 A7 49
XMIT-20:(task: 205914, time: 4363.47) 38 octets @ 266F14
[0000]: FF 03 80 21 01 01 00 22 03 06 CE A8 9F E6 81 06
[0010]: 00 00 00 00 82 06 00 00 00 00 83 06 00 00 00 00
[0020]: 84 06 00 00 00 00
RECV-20:(task: 205914, time: 4363.48) 8 octets @ 264450
[0000]: FF 03 C0 21 05 04 00 04
XMIT-20:(task: 25BE90, time: 4363.48) 8 octets @ 266F14
[0000]: FF 03 C0 21 06 04 00 04
XMIT-20:(task: 25BE90, time: 4363.49) 8 octets @ 266F14
[0000]: FF 03 C0 21 05 01 00 04
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