Avaya Troubleshooting Routers Guía para resolver problemas Pagina 247

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Using the Technician Interface to Configure and Run Packet Capture
117379-A Rev. A B-55
SDLC
The Synchronous Data Link Control (SDLC) protocol does not have a special data
link filter offset. If you configure a data link filter, set the offset to 0. The data link
lter works the same way that the MAC filter works.
An example of a hexadecimal display of an SDLC packet follows:
Pkt# 1 07/20/95 14:45:27.910 SDLC 2 Tx
00000000: d1 bf
SMDS
The switched multimegabit data service (SMDS) protocol does not have a special
data link filter offset. If you configure a data link filter, set the offset to 0. The data
link filter works the same way that the MAC filter works.
An example of a hexadecimal display of an SMDS packet follows:
Pkt# 10 04/22/98 08:09:20.211 SMDS 88 Rx
00000000: 05 03 00 00 00 87 00 4c e1 58 07 97 12 12 ff ff
00000010: c1 58 07 97 54 36 ff ff 05 03 00 00 03 00 01 00
00000020: 00 00 00 00 00 00 00 00 aa aa 03 00 80 c2 00 0e
00000030: 00 00 00 00 00 80 00 00 00 a3 00 00 0c 00 00 00
X.25
The X.25 protocol does not have a special data link filter offset. If you configure a
data link filter, set the offset to 0. The data link filter works the same way that the
MAC filter works. The X.25 protocol uses the hardware’s link layer capabilities,
which means that Packet Capture receives only the frame’s layer 3 (packet layer)
data.
An example of a hexadecimal display of an X.25 packet follows:
Pkt# 8 04/26/98 09:00:42.103 X25 47 Rx
00000000: 10 01 e2 00 00 00 00 00 01 00 00 00 00 00 02 00
00000010: 1e aa aa 03 00 00 a2 80 ff 00 00 a2 02 c9 b6 00
00000020: 00 a2 02 c9 b6 81 02 01 01 00 00 00 00 00 38 10
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