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Re: swx MDI decoding issue
Rolf Andersson / Pantor Engineering
11 May 2009 11:05PM ET Michael,
I don't have the swx spec in front of me, but the "unknown" entity between tags 268 and 269 is probably a pmap for the repeating group.
If you refer to the swx spec you will likely find at least 8 fields in the repeating group with an operator that requires a pmap entry.
(popcnt (7B C0) = 7 and field #5 seems to be defaulted.)
/Rolf
> Hi All,
>
> I am developing swx feed handler and I have an issue related to decode
> the FAST data from MDI.
>
> msg:
>
> 0000005ah: 00 C6 76 C0 E4 53 57 58 47 52 4F 55 50 2D 4D 44 ; 0000006ah:
> 49 2E 4D 30 B1 4E 92 32 30 30 38 30 36 32 33 2D ; 0000007ah: 30 33 3A 35
> 30 3A 32 33 2E 36 31 B1 81 43 48 30 ; 0000008ah: 30 30 34 36 32 36 33 30
> B2 81 7B C0 CA 80 80 41 ; 0000009ah: 42 51 B5 80 80 80 80 81 ;
>
> I try to decode it manually.
>
> block size = 00 C6 PMAP = 76 C0 (01110110 11000000) TID = E4(100) 49 =
> 53 57 58 47 52 4F 55 50 2D 4D 44 49 2E 4D 30 B1 34 = 4E 92 33 = 32 30 30
> 38 30 36 32 33 2D 30 33 3A 35 30 3A 32 33 2E 36 31 B1
>
> 1021 = 81 48 = 43 48 30 30 30 34 36 32 36 33 30 B2 268 = 81 7B C0 <--- ?
> 269 = CA ? 270 = 80 271 = 80 336 = 41 42 51 B5 346 = 80 6566 = 80 1023 =
> 80 6567 = 80 83 = 81
>
> I found 7B C0 is appeared between tag 268 and 269. However, I don't know
> what it is about. Also I think there is something wrong with the PMAP.
> e.g the last tag 83, I think the PMAP should be set for this tag.
>
> Thanks in advance Michael
Re: swx MDI decoding issue
Rolf Andersson / Pantor Engineering 11 May 2009 11:05PM ET
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