It sits in a loop doing the following:
show node xxx:: status
From that it picks out the appropriate circuit and does a
show circuit xxx status
So, to show the path from venti2:: to twenex::, the first few commands would be
NCP>shoW noDE twenex:: statUS
Remote Node = 31.29 (TWENEX)
Active Links = 0
Delay = 1
Circuit = NI-0-0
Next Node = 2.1023 (A2RTR)
NCP>shoW cirCUIT ni-0-0 staTUS
Circuit State Loopback
Adjacent Block
Name
Node Size
NI-0-0 On 2.1023
(A2RTR) 591
Designated Router = 2.1023 (A2RTR)
NI-0-0 2.520
(TOMMYT) 1476
NCP>tell a2rtr:: shoW noDE twenex:: statUS
Remote Node = 31.29 (TWENEX)
Circuit = DMC-31
Next Node = 31.3 (PYRTR)
NCP>tell a2rtr:: shoW cirCUIT dmc-31 stATUS
Circuit = DMC-31
State = On
Adjacent Node = 31.3 (PYRTR)
Block Size = 576
NCP>telL pyrtr:: shoW noDE twenex:: statUS
Remote Node = 31.29 (TWENEX)
State = Reachable
Delay = 1
Cost = 24
Hops = 2
Circuit = MUL-31-32
NCP>telL pyrtr:: shoW cirCUIT mul-31-32 statUS
Circuit = MUL-31-32
Adjacent Node = 31.32 (PIPY)
Block Size = 576
State = On
NCP>telL pipy:: shOW noDE twenex:: statUS
Remote Node = 31.29 (TWENEX)
State = Reachable
Type = Nonrouting IV
Cost = 4
Hops = 1
Circuit = VDE-31
NCP>tell pipy:: shoW cirCUIT
vde-31 staTUS
Circuit = VDE-31
Adjacent Node = 31.1022 (AHIMSA)
Block Size = 591
State = On
Adjacent Node = 31.1020 (MOKSHA)
Block Size = 591
Adjacent Node = 31.13 (FEDACH)
Block Size = 1498
Adjacent Node = 31.19 (MACOS9)
Block Size = 1498
Adjacent Node = 31.14 (FOMFOR)
Block Size = 1498
Adjacent Node = 31.26 (W2000S)
Block Size = 1498
Adjacent Node = 31.18 (RAPTOR)
Block Size = 1498
Adjacent Node = 31.21 (WXPEE2)
Block Size = 1498
Adjacent Node = 31.22 (TRU64)
Block Size = 1490
Adjacent Node = 31.20 (WFW311)
Block Size = 1498
Adjacent Node = 31.16 (WEXPEE)
Block Size = 1498
Adjacent Node = 31.11 (CLOUDY)
Block Size = 1498
Adjacent Node = 31.10 (QCOCAL)
Block Size = 1498
Adjacent Node = 31.12 (JUICHI)
Block Size = 576
Adjacent Node = 31.23 (XLVII)
Block Size = 1498
Adjacent Node = 31.24 (TSTVAX)
Block Size = 1498
Adjacent Node = 31.28 (RST101)
Block Size = 598
Adjacent Node = 31.31 (XLIV)
Block Size = 1498
Adjacent Node = 31.33 (XL)
Block Size = 1498
Adjacent Node = 31.34 (NANAJU)
Block Size = 576
Adjacent Node = 31.35 (NJEVX1)
Block Size = 1498
Adjacent Node = 31.36 (NJEVX2)
Block Size = 1498
Adjacent Node = 31.41 (KDJ11E)
Block Size = 576
Adjacent Node = 31.44 (XLVI)
Block Size = 1498
Adjacent Node = 31.39 (ROUT20)
Block Size = 1498
Adjacent Node = 31.38 (LV)
Block Size = 1498
Adjacent Node = 31.15 (OSTARA)
Block Size = 1498
Adjacent Node = 31.30 (VAXSTN)
Block Size = 1498
Adjacent Node = 31.42 (XXXV)
Block Size = 1498
Adjacent Node = 31.1021 (PYDNET)
Block Size = 591
Adjacent Node = 31.27 (MACOS7)
Block Size = 1498
Adjacent Node = 31.29 (TWENEX)
Block Size = 576
Could you tell in detail which NICE messages you are generating?
In general, if I were to do such a tool, I would normally do the NICE message that generates the same request as NCP SHO NOD do.
To give an example from JOCKE to A2RTR:
.ncp sho nod a2rtr
Node summary as of 11-APR-23 00:26:52
Remote Active Next
Node State Links Delay Circuit Node
2.1023 (A2RTR) 1.15 (PONDUS)
.ncp tell pondus sho nod a2rtr
Node summary as of 11-APR-23 00:27:05
Remote Active Next
Node State Links Delay Circuit Node
2.1023 (A2RTR) 1.13 (MIM)
.ncp tell mim sho nod a2rtr
Node summary as of 11-APR-23 00:27:21
Remote Active Next
Node State Links Delay Circuit Node
2.1023 (A2RTR) 31.3 (PYRTR)
.ncp tell pyrtr sho nod a2rtr
Node summary as of 11-APR-23 00:27:30
Remote Active Next
Node State Links Delay Circuit Node
2.1023 (A2RTR)
Sadly PYRTR did not actually tell what the next node is here. Not sure if it's just an old version of PYRTR, or if there is something for Paul to improve. But you should get the idea...
Also, note that this will give the forward path, which in DECnet most certainly might be different than the return path...
Johnny
On 2023-04-10 23:58, Thomas DeBellis wrote:
Now that I'm done with Kermit-20, I wanted to get back to finishing up some other work that I had been doing. FAL, DAP and NFT are in good enough shape for me to leave them alone for the moment, so that's another rabbit hole I've gotten myself out of.
I'm now looking fix an error that I somehow introduced into MMAILR (SMTP over DECnet). Fixing this required modifying DDT, which I had to do to fix another issue I had introduced into Kermit. I wanted to have a quick look at what Tops-20 hosts might be up on HECnet and wrote up a little batch job to use NETPTH to test connectivity.
NETPTH is a nifty utility to find paths between DECnet nodes. It builds a connection the NCU's of various nodes to determine the path that a message might take to get there. Think of it like traceroute or ping -R (RECORD_ROUTE option).
It almost never works...
Before I roll up my sleeves and jump into this I was wondering if anybody had any observations about the errors I'm seeing?
------------------------------------------------------------------------
*TINA*::*PAMINA*::*KLIO*::*TWLGHT*::*RARITY*::*FLUSHY*::*RBDASH*::*APPLEJ*::*PINKIE*::*DISCRD*::*TWENEX*::
From Via Back Thru Cost Hops
VENTI2 (2.522) =>NI-0-0 / BRG-0 <= A2RTR (2.1023) -1 -1
A2RTR (2.1023) =>DMC-31 /
?NETCFO Can't find Output Circuit parameter
*SAMT20*::
?NETURN Unreachable node
*TOMMYT*::
From Via Back Thru Cost Hops
VENTI2 (2.522) =>NI-0-0 / NI-0-0 <= TOMMYT (2.520) 1 1
*BITXT2*::*BITXT0*::*MINDY*::*FALLON*::*JOSHUA*::*OLAF*::
From Via Back Thru Cost Hops
VENTI2 (2.522) =>NI-0-0 / BRG-0 <= A2RTR (2.1023) -1 -1
A2RTR (2.1023) =>
?NETCFO Can't find Output Circuit parameter
*WALACH*::
From Via Back Thru Cost Hops
VENTI2 (2.522) =>NI-0-0 / BRG-0 <= A2RTR (2.1023) -1 -1
A2RTR (2.1023) =>DMC-29-206 /
?NETCFO Can't find Output Circuit parameter
*SOL*::
From Via Back Thru Cost Hops
VENTI2 (2.522) =>NI-0-0 / BRG-0 <= A2RTR (2.1023) -1 -1
A2RTR (2.1023) =>MUL-59-1016 / DMC-1 <= STORTR (59.1016) -1 -1
STORTR (59.1016) =>GRE-16 /
?NETCFO Can't find Output Circuit parameter
*FENCER*::
From Via Back Thru Cost Hops
VENTI2 (2.522) =>NI-0-0 / BRG-0 <= A2RTR (2.1023) -1 -1
A2RTR (2.1023) =>MUL-59-1016 / DMC-1 <= STORTR (59.1016) -1 -1
STORTR (59.1016) =>GRE-16 /
?NETPTH NTMAN failed, reason:
Parameter missing
$
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