Decode view
The Decode view displays decoded packet data in byte order from top to bottom. Click the minus or plus signs to collapse or expand the view of any header section. In collapsed mode, you get a summary of the layer.
The Packet Info (in green) at the top is generated automatically by Omnipeek. The following table lists the parameters that may appear in Packet Info.
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Parameter
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Description
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Flags
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Denotes the flag of a packet. Packets can be flagged, based on their match with a variety of conditions. Flags vary from one network medium to another.
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Status
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Indicates any one of several conditions, including that the packet was truncated or sliced. Shows a value of 0x00 when the packet does not have any of these other conditions.
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Packet Length
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The number of bytes that the card retrieved off the network for this packet, including all header information and FCS.
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Slice Length
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When Slice Length appears, it indicates the number of bytes of the packet which were captured. This is shown only if packet slicing was used on a packet, or if data was truncated because it was unavailable.
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Timestamp
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The time the packet was received.
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Data Rate
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The data rate at which the body of the 802.11 WLAN packet was transmitted.
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Channel
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The 802.11 WLAN channel number and radio frequency at which the packet was transmitted.
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Signal Level
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The signal strength of the transmission in which the 802.11 WLAN packet was received, expressed as the RSSI normalized to a percentage.
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Signal dBm
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The signal strength of the transmission in which the 802.11 WLAN packet was received, expressed in dBm (decibel-milliWatts). If the packet was captured on an adapter that does not report values for signal level in dBm, this item will not be shown.
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Noise Level
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The noise level reported in the receipt of this 802.11 WLAN packet, expressed as a percentage. If the packet was captured on an adapter that does not report values for noise, this will show as 0%.
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Noise dBm
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The noise level reported in the receipt of this 802.11 WLAN packet, expressed in dBm (decibel milliWatts). If the packet was captured on an adapter that does not report values for noise in dBm, this item will not be shown.
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NOTE: Omnipeek decodes hundreds of network, transport, application and device control protocols, displaying both the commands and their meaning. When the data portion of the packet is listed toward the end of the Decode view simply as data, Omnipeek has reached a layer of the packet that it cannot decode with the current or default decoder. For details about selecting an alternative decoder, see Choosing a decoder. If you are writing your own protocols and wish to write your own decoders, see Writing your own decoders.