7 May
2020
7 May
'20
11:38 p.m.
On 2020-05-07 23:07, John Forecast wrote:
Exactly what is included in "ACTIVE NODES" and "ADJACENT NODES" in RSX
is a topic I've discussed with Paul before.
DECnet actually do have a formal definition for these, but RSX is not
completely following it.
For ACTIVE NODES, it's adjacent nodes, as well as any node for which RSX
have some statistics (so yes, the round trip delay is a sign that it
have statistics).
ADJACENT NODES on the other hand, are nodes that you have a direct
connection to, and/or are online.
So, any nodes that are at the other end of any point to point circuit,
as well as any nodes that are online on an ethernet that the RSX machine
is also on.
So there are nodes that might not be adjacent, but might be active. But
the other way around cannot happen.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
On May 7, 2020, at 4:14 PM, Paul Koning
<paulkoning at comcast.net> wrote:
SHOW ACTIVE NODES on both RSX and VMS does the equivalent of SHOW EXECUTOR SUMMARY
followed by all the other ?active? nodes. I don?t think anyone used the ?on-NI cache? but
it looks as though both RSX and VMS keep a cache of recently computed round-trip delays
and use that for ?adjacent nodes?. On May 7, 2020, at 3:08 PM, John Forecast
<john at forecast.name> wrote:
I include the executor in active nodes, and that's generally what I've seen
others do. The spec does not say so, interestingly enough. The spec is also confused
because "adjacent nodes" isn't defined on non-routing nodes; the only
adjacency they have is the designated router. I'm assuming it wasn't the intent
for this to show the "on-NI cache", I don't remember seeing anyone do that.
paul
BTW, how did you implement ACTIVE NODES (i.e. how
did you determine which nodes are "active?)?
The above list looks very similar to what I have running. ACTIVE NODES for a
nonrouting node is defined as all nodes at the other end of a logical link, adjacent nodes
and the designated router.