[HECnet] Cisco DECnet routers and NML

[Brian Hechinger]

Probably the same one I use for the tunnel manager.

It's pretty simple to use.

-brian
On May 4, 2020, 16:26 -0400, Paul Koning <paulkoning at comcast.net>, wrote:
>
>
> > On May 4, 2020, at 3:58 PM, Johnny Billquist <bqt at softjar.se> wrote:
> >
> > On 2020-05-04 19:39, Paul Koning wrote:
> > > > On May 4, 2020, at 1:35 AM, Tim Sneddon <tim at sneddon.id.au> wrote:
> > > >
> > > > On Mon, May 4, 2020 at 1:57 AM Peter Lothberg <roll at stupi.com> wrote:
> > > > The Cisco DECnet router implementation does not speak "decnet management" as
> > > > we all knew. The way we are using them the tunnel end-points are on the Internet.
> > > >
> > > > Most of the information "missing" is actually available through the SNMP MIB,
> > > > so if we could agree on a common read-only community and publish the IP addresses
> > > > of those routers it would be possible to complete Paul's map..
> > > >
> > > > I would definitely be up for that. Maybe "hecnet-ro" for the community name?
> > > >
> > > > Regards, Tim.
> > > Nice idea. I can certainly do this. To make it work, the node database would have to list IP addresses for MIB access.
> >
> > I could certainly extend it with that...
> >
> > > The fact that the Cisco routers don't speak NICE isn't always a problem. If they have neighbors that do I still get the information, since I will chart a circuit even if only one of the two sides tells me about it.
> > > If there is a chain of Cisco routers, the one in the middle of the chain wouldn't be mapped. But, for example, an area served by a Cisco area router would be, since the mapper will try to talk to the nodes in the area and ask them what their view of the neighborhood looks like.
> >
> > Well, that's not entirely enough. This means there are some major links that are not visible. Yes, you can see that there are a Cisco box here, and a Cisco box there, but you cannot see that they are connected.
>
> True, and that certainly is a good argument to do the change. To make matters easy, it turns out there is an SNMP library for Python.
>
> paul
>
>
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