9 Mar
2020
9 Mar
'20
8:08 p.m.
On Mar 9, 2020, at 2:34 PM, Mark J. Blair <nf6x at
nf6x.net> wrote:
Dumb question time, because I struggle with VMS: Is there a DECnet equivalent to
"ping" that I can use to verify that my emulations can talk to pydecnet? I
gather that's what the mirror server is for, but I don't know how to invoke it on
the VMS side.
"ncp loop node <name>". That will do one ping (via an application layer
connection); there are arguments to specify N messages or a length different from the
default.
Then there is "ncp loop circuit <cname>". For Ethernet, that uses the
standard loop protocol (90-00), to whoever answers the "assistant multicast
address" or to the specified neighbor if you give the address.
You can also see what PyDECnet believes is out there via its http pages. One item that
might be useful is the MOP display ("internals" for maximal detail). That gives
the sysid listener's database, which records the DEC Sysid messages every node is
supposed to send every 8-12 minutes. There is a defined way to get that via NCP but I
haven't found anyone who implements that (the "configurator" module).
paul