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nodename character limit and interaction between Decnet and TCP/IP

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Victor Mendham
Regular Advisor

nodename character limit and interaction between Decnet and TCP/IP

The SCSNODE char limit is 6 characters.

If the SCSNODE name is 6 characters and the TCP/IP nodename is 8 characters, will this cause any problems under OpenVMS v7.3.1, running TCP/IP 5.3 (5.3 is the version which comes with OpenVMS 7.3.1 right? ).
4 REPLIES
Martin P.J. Zinser
Honored Contributor

Re: nodename character limit and interaction between Decnet and TCP/IP

Hello,

Yes, you can do it (see below), and no, I do not think it is genarally a good idea since it surely
will end up confusing people who have to work with this system.

Greetings, Martin

ABCDEF> show net

Product: DECNET Node: ABCDEF Address(es): aa.aaa
Product: TCP/IP Node: ABCDEF.deutsche-boerse.de Address(es): bb.bb.bb.bb
UF1002> tcpip show inter
Packets
Interface IP_Addr Network mask Receive Send MTU

WE0 cc.cc.cc.cc 255.255.0.0 64651937 42070987 1500
WE1 bb.bb.bb.bb 255.0.0.0 117572127 72020625 1500
LO0 127.0.0.1 255.0.0.0 74 74 0
UF1002> tcpip show host cc.cc.cc.cc

LOCAL database

Host address Host name

cc.cc.cc.cc abcdef-e0, ABCDEF-E0

(Node names and addresses masked)
Gary Sachs
Advisor
Solution

Re: nodename character limit and interaction between Decnet and TCP/IP

Victor,

you can have 6 character DECnet name and a different length TCPIP name, no problem. But as mentioned in the previous reply, it is not necessarily a good idea from a confusion standpoint. I would try and keep host/node names the same whenever possible to avoid the confusion that maybe encountered, be consistent. However, some circumstance don't always allow us to be consistent. It will all depend on what you are trying to accomplish or avoid.
Victor Mendham
Regular Advisor

Re: nodename character limit and interaction between Decnet and TCP/IP

Martin / Gary,

Thanks for your responses.

Regards,

Vic Mendham
Alex Daniels
Frequent Advisor

Re: nodename character limit and interaction between Decnet and TCP/IP

Agreed, dont think its a great idea, but if you want longer DECnet names an easy way to achive this is to run DECnet over IP.

Then you can just add extra entries in your DNS / local host table for as many extra names as you require and certainly up to 8 characters. You can also then keep your 6 char DECnet name as well.