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Wireshark-users: [Wireshark-users] ICMP Echo Requests & Replies - multiple Identifier & Sequence

From: "Keith French" <keithfrench@xxxxxxxxxxxxx>
Date: Thu, 24 Feb 2011 11:30:35 -0000
I have recently seen in Wireshark when looking at an echo request/reply pair, that instead of the identification/sequence numbers used to tie the two packets together, there are now two identifiers and two sequence numbers:-
 
Identifier (BE): 512 (0x0200)
Identifier (LE): 2 (0x0002)
Sequence number (BE): 4352 (0x1100)
Sequence number (LE): 17 (0x0011)
 
What do the BE & LE signify & how do you use them to tie up the request & reply?