Re: SLIP on V3R2

[Peter Coffin <phcoffin@xxxxxxxxxx>]

Chris writes:

> On the laptop, I can dial into my ISP using SLIP without any problems.
> However, when connected, PINGing between the AS/400 and the PC results
> in no PONGs back.

Disclaimer: My SLIP experience is limited to PC/unix stuff, and includes
no AS/400 implementations.

This is while connected to the ISP? Remember, SLIP is a point to point IP
connection over serial lines, hence Serial Line Internet Protocol and the
AS/400 referring to it as Point-to-Point TCP/IP. This means it works over
a serial line connecting (in your case) the laptop over a serial line to
the AS/400 directly: no ISP, no router, no nothin' inbetween except serial
devices, such as a pair of modems and a phone line. In short you should be
dialing straight into a modem plugged into your 9401. GENERALLY, this is
used the other direction: The AS/400 dials in to the ISP, and becomes a
a leaf node on the ISP's network, at least on the serial line. (I don't
know if the 400 is multihoming (able to have multiple IP addresses depending
on the line used), but the manuals don't seem to imply that it is. If you're
connecting to you ISP using SLIP, you need to use the IP addresses on the
local and remote lines that your ISP gave you, not the ones assigned to your
TR line. If you're using the laptop to dial straight into the modem on the
400, then the local IP address will be the 400's normal IP address, and the
remote will be the IP address of your laptop.

Peter H. Coffin
phcoffin@us.ibm.com
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