[HECnet] Circuit costs - Area 19 revised

[Steve Davidson]

Greg,

The issue you will run into is that in the case of the bridge or even Multinet the other end has no way of knowing that your IP address has changed.   A bit of DCL trickery is used on SG1:: to deal with this for Multinet.   As a result, SG1:: supports dynamic-DNS (remote) links.   It does a "MULTINET NSLOOKUP" of the remote periodically (this is configurable), compares it to what it has in a private database, and "fixes" it if it has to.   After that it reestablishes the link.   Each dynamic IP address MUST use a dynamic-DNS provider or SG1:: will not be able to do the lookup.

-Steve


-----Original Message-----
From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Gregg Levine
Sent: Friday, December 30, 2011 9:28 PM
To: hecnet at update.uu.se
Subject: Re: [HECnet] Circuit costs - Area 19 revised

On Fri, Dec 30, 2011 at 8:48 PM, Johnny Billquist <bqt at softjar.se> wrote:
On 2011-12-30 17.28, Gregg Levine wrote:

Incidentally Johnny Billquist, have we ever worked out a reasonable
method of assigning a dynamic IP address to be reachable by the
efforts of the network? I know it works for websites.....


Uh? Not sure what you mean?

           Johnny

Hello!
Okay please visit http://www.gregg.levine.name and that site lives
here, and resides on the Linux machine that Fred and were I discussing
earlier today. It is connected to the Internet via a router and a DSL
device. That device gets an IP address and it tells the router, both
are created dynamically via the PPPoE functions as assigned by the
service provider who is Megapath.

To have my system serve my webpages rather then have a hosting entity
do that I would need to, (and have done so) set up (or even arrange)
an account with any of the dynamic DNS service providers. I chose DDNS
to do so, and they went along with my choice of host name and offered
many suggestions on the methods of confirming that the hostname is
registered and is working. I chose to allow my router do one, and the
computer runs a program every few days to do the other one.

That's what I was getting at. Since this is a commercial router as
offered by Cisco, I'm not sure if it understands how to route the
stuff that's used for communications via the connected systems here.

I am of course looking at other methods to communicate with everything
out there besides the others people use. Speaking (or writing)
hypothetically, would a copy of Pathworks/32 work to communicate with
the others out there?
-----
Gregg C Levine gregg.drwho8 at gmail.com
"This signature fought the Time Wars, time and again."