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Decnet traceroute

 
Sunil Kunnel
Occasional Advisor

Decnet traceroute


Like traceroute in TCPIP, is there a any tool in DECNET to trace the route from one host to another? The MC NCP sho know nodes shows the next node address.
12 REPLIES 12
Volker Halle
Honored Contributor

Re: Decnet traceroute

Sunil,

there is no such tool in the DECnet or DECnet-Plus product for OpenVMS.

You would need to use a sequence of NCP SHOW NODE x and NCP TELL y SHOW NODE x commands to manually follow each hop to the destination system. It will get more complicated, if you have both DECnet IV and DECnet V systems around.

There may have been a DEC-internal tool (DCL procedure) for this in the DECnet Phase IV time frame.

Volker.
labadie_1
Honored Contributor

Re: Decnet traceroute

As Volker said, mc ncp tell...
will draw a Decnet traceroute, IF mc ncp tell is authorized on the various Decnet nodes.

I remember a good laugh when I discovered, using this method, why a Decnet copy in Paris (about 1 kilometer) was so long: the path was France -> Hongkong -> UK -> France

:-)
Sunil Kunnel
Occasional Advisor

Re: Decnet traceroute

thank you.
Sunil Kunnel
Occasional Advisor

Re: Decnet traceroute

I am confused. Suppose If I want to get trace from, say Node X to Node Y what would be the command?. I am getting tomany option when i give a MC ncp tell command.
Volker Halle
Honored Contributor

Re: Decnet traceroute

Sunil,

if you want to know the DECnet route to node x:

$ MCP NCP SHOW NODE x

This will show the next node, let's say 'y'

$ MC NCP TELL y SHOW NODE x

Volker.
Sunil Kunnel
Occasional Advisor

Re: Decnet traceroute

for me the next node is the decnet address of CISCO router.I am getting message like unable to connect to listener. I suppose this is because the interface on Router is not configured for listener service.

Thank you.
Volker Halle
Honored Contributor

Re: Decnet traceroute

Sunil,

not all nodes speaking DECnet protocol are required to implement the NML (NICE or CMIP) protocol.

In case of a CISCO router, you might need to login to that router and find out what commands are available to obtain the desired information.

Volker.
Sunil Kunnel
Occasional Advisor

Re: Decnet traceroute

Thank you , I will have a look.

Re: Decnet traceroute

The old TELL.COM from 80's is here:

http://www.phrack.org/issues.html?issue=27&id=6#article