Hi,
It's actually a binary representation of the distribution method. (Not sure how useful it is but there you go...)
For example, comparing 55 and AA we get:
01010101
10101010
Which is a simple alternation between the ports.
If we compare 11,22,44,88 we get:
00010001
00100010
01000100
10001000
Which again gives a simple alternation between the ports. I guess it may be useful in the case where you have an uneven distribution of ports (and hence an uneven distribution of traffic) - 3 ports gives you the following values: 0x49 0x92 0x24, which in binary is:
01001001
10010010
00100100
Which shows the 3:3:2 ratio of traffic distribution that you'd expect.
HTH
Andrew.