ip and routing subtleties

[Bill Campbell]

On Sun, Feb 04, 2007, David Bandel wrote:
>Folks,
>
>Anyone need to actually understand the ip utility?  While I've used ip
>for ipv6 and other related things, I had forgotten just how poor the
>ip documentation was until I had to brush up this week.
>
>I bought another 2Mb frame relay (wish we had fiber available here)
>and stuck a Sangoma Wanpipe card (ugh) in beside my Cyclades PC300
>then had to write the routing tables, etc., for the two distinct
>routes.  Since I'm not assigned an AS, dynamic routing is out.  So,
>with three public IP blocks and a dozen different private IP blocks in
>use, I wrote the necessary scripts to handle it.

I refuse to use Cyclades since they thoroughly screwed me by selling me a
card that wouldn't work with the version of Linux I specifically said I
would be using, then charging a 15% ``restocking'' fee when it wouldn't
work.  I've had excellent results and support from Sangoma, even having
them replace a card nuked by a lightning strike.

>The exercise made me realize that some folks who might need to
>understand this won't.  OTOH, I may be one of the few unhappy saps
>without an AS but with numerous inbound and outbound routes.
>
>If there's interest, let me know while it's still fresh in my feeble old mind.

I would be interested.  So far the only thing I've figured out how to do
with the ``ip'' command is to temporarily add/delete IP addresses to an
interface while configuring systems on our LAN that will be used on a
different network.

Bill
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