Decnet traceroute

[Sunil Kunnel]

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.

[Volker Halle]

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]

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]

thank you.

[Sunil Kunnel]

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]

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]

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]

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]

Thank you , I will have a look.

[kari salminen]

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

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