[HECnet] Is MIM running?

Peter Lothberg roll at stupi.com
Thu Oct 21 07:39:58 PDT 2021


Tops10/Tops20 has something caled "NETPTH" but it don't work like trace route 
that depends on packet TTL expire and ICMP replies, it actually talks management to each node
and splices the path together.

[Routing path from MRC (59.41) to LEGATO (2.1)]

 From               Via        Back     Thru                           Cost    Hops
MRC    (59.41)    =>NI-0-0   / TAP-0       <=   OPS1VA (59.59)          -1      -1
OPS1VA (59.59)    =>GRE-3    / GRE-4       <=   IAD2   (59.1020)        -1      -1
IAD2   (59.1020)  =>DMC-0    / MUL-59-1020 <=   A2RTR  (2.1023)         -1      -1
A2RTR  (2.1023)   =>TAP-0    / QNA-1       <=   LEGATO (2.1)            -1      -1

----- Original Message -----
> From: "David Moylan" <djm at wiz.net.au>
> To: "hecnet" <hecnet at Update.UU.SE>
> Sent: Thursday, October 21, 2021 1:20:12 AM
> Subject: RE: [HECnet] Is MIM running?

> It would be awesome to implement a "traceroute" equivalent on something :-)
> I assume we'd have to allow node inspection from remote, but I'm sure people
> would be open for that.
> 
> I used to run a Cisco router for my area, but replaced it with pyDECnet as I
> wanted to mix both GRE and point-to-point tunnels.
> pyDECnet ticked all the boxes and was simple to implement.
> 
> The one thing that I miss, however, is the simplicity of "ping decnet" in Cisco
> IOS. Right from the router I could see if something was up or down.
> Now I have to jump onto one of my boxes and do an ncp loop node to confirm the
> same.
> 
> Would be nice to have the same implemented in pyDECnet, perhaps as a command
> line option, or via the web gui.
> 
> If nobody else has any equipment handy, I could setup a router again at home and
> do some captures.
> 
> Cheers, Wiz!!


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