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日期:2024-08-16
Wireshark > shows an LLC header after the UDP header, which is simply not present; > see first attachment (bad.pcap). In the process of poking around a bit, > I changed the UDP port numbers to 12032 and 12048 in the pcap file, and > wireshark no longer .....
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日期:2024-08-15
Hello, As the title states: do all ethernet frames contain an LLC header? In other words, is 802.2 mandatory? When doing pcap using wireshark, the llc filter shows no results. If LLC is not mandatory, when is it used, and what indicates whether that heade...
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日期:2024-08-13
An 802.11 frame should contain an LLC header if, and only if, it's a Data frame. The frame type and subtype are part of the Frame Control field in the MAC header; Data is one of the frame type values (the others are Control and Management). The subtype do...
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日期:2024-08-12
One half of the LLC address space is reserved for such assignment. ... The 5-octet SNAP header follows the 802.2 LLC header if the destination SAP (DSAP) ......
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日期:2024-08-12
The SNAP Frame Format consists of a normal 802.3 Data Link Header followed by a normal 802.2 LLC Header, and then a 5 byte SNAP field, followed by the ......
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日期:2024-08-13
LLC Header. In case you are ever laying awake at three in the morning and you are thinking about the fact that the three bytes in the Type 1 LLC header (DSAP, ......
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日期:2024-08-16
3.SNAP(Sub-Network Access Protocol)訊框格式主要是用來擴充乙太網路能支援的上層通訊協定種類。因為LLC Header中的DSAP或SSAP都是只有八個位元長度, ......