topic Re: Decnet Host Database.. in Operating System - OpenVMS

Decnet Host Database..

Muthuvel.B — Wed, 06 Apr 2005 16:35:23 GMT

Hi Guys,

Is there any host database file for DECNET nodes and Addresses on an OpenVMS system just as how TCPIP has TCPIP$HOST.DAT file. If not, how to find out the DECNET addresses that are there in cache on a running OpenVMS system?

I somewhere heard that NETNODE_REMOTE.DAT is the one which has these DECNET Address entries. But that is also not readable.

Any clarfication is greatly appreciated.

Thanks & Regards,
Muthuvel.B

Re: Decnet Host Database..

Jeffery D. Urmann — Wed, 06 Apr 2005 17:43:19 GMT

Muthuvel,

DECnet information is stored in a database accessible via the NCP utility. Enter the following DCL commands to enter the utility:

$ MCR NCP

Once in the utility, use the SHOW command to view the volatile entries. Use the LIST command to view permanent entries. To show all nodes in the volatile database:

NCP> Show Known Nodes

For detailed information on commands and qualifiers:

NCP> Help

Hope that gets you started.

Enjoy,

--Jeff

Re: Decnet Host Database..

Muthuvel.B — Wed, 06 Apr 2005 18:23:05 GMT

Thank you so much.. I am very much pleased with the help.

I read that for the nodes running Decnet Plus, the configs should be done with NCL instead of NCP. Is that true? and if that is the case, How can I find the same thing that is the DecNet node info using NCL?

I also would request you to provide me some useful stuffs which detailedly describes the DECNET transport across nodes.

Thanks & Regards,
Muthuvel.B

Re: Decnet Host Database..

Travis Craig — Wed, 06 Apr 2005 20:54:54 GMT

Muthuvel.B,

On my machine, I use:

$ mcr decnet_register

and then follow the prompts and help in there. I think it is for newer versions of DECnet than NCL was. I have DECnet_OSI V7.3-1.

--Travis Craig

Re: Decnet Host Database..

Kris Clippeleyr — Thu, 07 Apr 2005 02:13:01 GMT

Hi,

For DECnet Plus, use MCR DECNET_REGISTER.
Once the menu is displayed, choose option "7 - Export node names to a data file". Then for "Directory service", enter "LocalFile", for "Node name or address", enter *, for "File name", enter a valid file specification. After "export", you'll have a quite readable list of the nodes known to DECnet.

Regards,
Kris (aka Qkcl)

Re: Decnet Host Database..

Daniel Fernandez Illan — Thu, 07 Apr 2005 02:37:29 GMT

Hi,
With DECnet phase IV you can view nodes on database using NCP. "show know nodes" displays nodes on temporal database and "list know nodes" displays nodes on permanent database.
If you use DECnet phase V, the best option to view defined nodes is use command DECNET_REGISTER to display nodes on local or DNS databases.
Best Regards.

Re: Decnet Host Database..

Ian Miller. — Thu, 07 Apr 2005 07:18:31 GMT

See DECnet manual for some info on the protocol stack. The DECnet phase IV protocols are documents and the documents are available e.g
http://linux-decnet.sourceforge.net/docs/doc_index.html