[HECnet] PyDECnet setup

[Brian Hechinger]

So, I started a bit of a thing here, eh? :D

So my thought is as follows. I'm going to re-write the tunnel config 
tool soon(ish) and will focus on the existing Cisco bits for the GRE 
mesh but when I was configuring your router I saw the options for GRE 
and I thought to myself wouldn't it be neat if I could auto-configure 
pydecnet as well.

The only thing I'd really do is create/update/delete circuits (doesn't 
even need to be GRE specific circuits, I'd be able to configure any 
kind!). Being able to do so from external to the machine pydecnet is 
running on would be a bit more flexible. Worst case my new architecture 
plan has an agent that can run anywhere so it's reasonable for me to be 
able to just manage config files and process restart from the agent.

As far as re-config goes if the API would allow me to alter circuit 
configs (how it stores them is up to it) and just do a full router 
reload that's basically what I'll be forced to do anyway if I can't use 
an API to do it.

I'll put together an arch diagram for what I have in mind and we'll look 
into it.

-brian


On 17/11/21 16:50, Paul Koning wrote:
> Not at the moment, and it's a large change to the design to allow 
> configuration to change at runtime.
>
> I have done a bit of work to allow "change" type NICE requests, 
> starting with the "zero counters" request.  That isn't done yet.
>
> A specific change that should be small and straightforward is updating 
> the list of node name/address pairs.  I'm thinking of doing that in 
> the network mapper, since it already fetches the current list from 
> MIM.  Right now that updates the mapper data but not the main DECnet 
> node list.  Once it does that, you'd be able to do the NCP "copy from 
> 28NH" request for NCPs that implement that, or an equivalent script, 
> to get the current database.
>
> paul
>
>> On Nov 17, 2021, at 11:42 AM, Brian Hechinger <wonko at 4amlunch.net> wrote:
>>
>> Speaking of the API, would it be possible to configure pydecnet via 
>> the API?
>>
>> -brian
>>
>> On 17/11/21 14:54, Paul Koning wrote:
>>> BTW, I'm still trying to figure out how best to construct the API. 
>>>  What's there now seems clumsy.  The existing network application 
>>> API (see decnet/application/mirror.py) feels more like what I want, 
>>> but I need to go back and see how best to work that for requests 
>>> initiated from the outside, as opposed to subprocesses started from 
>>> PyDECnet.
>>>
>>> paul
>>>
>>>> On Nov 17, 2021, at 9:44 AM, Brian Hechinger <wonko at 4amlunch.net> 
>>>> wrote:
>>>>
>>>> Read documentation? Heathen. :-P
>>>>
>>>> Got a systemd unit file written for it and it's up and running for 
>>>> good now. Woo!
>>>>
>>>> Now to figure out what I can do with the API.
>>>>
>>>> -brian
>>>>
>
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