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Blue Forest http://www.lslnet.com at 13:28 on July 26, 2006

[Meaning to ask you ]IP Baotou field?


As follows :

1, marking field identifier field and what similarities?

2, divided what is the specific role of migration field? (Book is that the length of this field to 13, with eight byte units, a patch for a specified threshold shift relative to the threshold of the first report)

3, 2, what is the shift? And why is it for eight bytes, it is not only a total of 13?

Thank you!

This sounds very boring, you can see the TCP Comments on Volume 1, protocol analysis will have to do something in the activity.

In short, the identification field of 16, marking the source of data for the report, if a data packet has been divided into three sections, each of the three had the same identification field;

Field signs three, the first one not to use, not the second subparagraph (DF), said third subparagraph (MF).

When you got the first, second and third will be very easy to understand the doubts. . .

The incisive interpretation of the second floor

Initially issued by fengyu_wu
This sounds very boring, you can see the TCP Comments on Volume 1, protocol analysis will have to do something in the activity.

In short, the identification field of 16, marking the source of data for the report, if a data packet has been divided into three sections, each of the three had the same identification field;

Field signs three, the first one not to use, not the second subparagraph (DF), said third subparagraph (MF).

When you got the first, second and third will be very easy to understand the doubts. . .

Thank you, you have given on the marking of the explanation!

But there is not time :

1 patch offset field is not recognized degree patch of money (for instance, when the value of a data set of 600 films, it is a packet over one, if it is more than 600 hours on too much on big, and this is 600 divided by the volume of migration field?

2. Book is that the migration field length films for 13 hours to eight bytes as a unit, patch threshold for a specified threshold compared with the first shift reported. (As long as it is said 13, but it is also why for eight bytes? )

1, a 1500 package, if not the largest of more than 700 long, will be divided into three sections : 0 for the first shift, second shift of 700, paragraph 3 of deviation for 1400.

2, "Field migration length films for 13 hours to eight bytes as a unit, that is eight bytes for the deviation units, and the migration field lengths.

Thank you


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