Re: Confusion reigns supreme (TCP/IP)

[Jim Langston <jlangston@xxxxxxxxxxxxxxxx>]

Hmm... I verified the default route and it was correct, and it still wouldn't 
work.
I was assigning my AS/400 a high IP address, x.x.x.139 and it wouldn't work
We just got a new internet line and I had tried the same thing on my old line, 
with
a high internet address, and it didn't work.

So, I just removed the x.x.x.139 address, and added x.x.x.115, added the default
route and... it worked?!?

I am told that my ip range is x.x.x.112 Block Size: /28

So, I have 112-140.  My net mask is 255.255.255.240

This is what confuses me, and maybe it has something to do with it?
240 in binary is 11110000
255 in binary is 11111111

wouldn't a mask of 255.255.255.240 mask off all bits but the last 4?
so wouldn't my range be from 0 to 15 with 0 and 15 being unusable?
Or is there something I don't understand about net masks?  (I wouldn't
doubt that).

Anyway, thanks for the help, but there is something funny going on, I think,
with the AS/400 (or V3R7M0 in particular), IP address, netmasks and the
internet.

Regards,

A still confused Jim Langston



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