topic DecNet Plus & TCPIP in Operating System - OpenVMS

DecNet Plus & TCPIP

XMAN_1 — Thu, 02 Mar 2006 17:57:26 GMT

Can DecNet Plus & TCP/IP be installed together?

Will DecNet Plus alone can support TCP/IP or not?

Re: DecNet Plus & TCPIP

Arch_Muthiah — Thu, 02 Mar 2006 18:22:46 GMT

XMAN,

Yes, both can be installed together, and DECnet over TCP/IP requires that you have a supported version of DECnet-Plus for OpenVMS and a supported version of an industry standard TCP/IP stack, like Compaq TCP/IP Services for OpenVMS

Archunan

Re: DecNet Plus & TCPIP

Phillip Thayer — Thu, 02 Mar 2006 18:24:31 GMT

XMAN,

Yes these two products can be installed together. I don't think that DecNet Plus has a TCP/IP stack as part of it so I don't think DecNet Plus can support TCP/IP alone.

Phil

Re: DecNet Plus & TCPIP

Arch_Muthiah — Thu, 02 Mar 2006 18:26:00 GMT

XMAN,

We don't need any other s/w for this.

DECnet over TCP/IP is not just another tunnel or gateway between one protocol and another. Unlike tunnels, there is no duplication of function between the upper layer applications and the lower TCP and IP layers. When using DECnet over TCP/IP, the flow-control and error-recovery mechanisms are those of TCP and underlying IP. As a consequence, there is no inherent performance overhead with running DECnet over TCP/IP, unlike that which is found in tunneling solutions.

Equally important, DECnet over TCP/IP does not define a gateway between the DECnet and TCP/IP worlds. Systems running DECnet over TCP/IP are still DECnet systems ; they just use TCP/IP (along with other protocols) for DECnet communications, while not interfering with "pure" TCP/IP communication from TCP/IP applications on the same systems.

Archunan

Re: DecNet Plus & TCPIP

XMAN_1 — Thu, 02 Mar 2006 23:48:38 GMT

Thanks a lot Guys!

Re: DecNet Plus & TCPIP

Ian Miller. — Fri, 03 Mar 2006 03:35:56 GMT

For more information on DECnet/Plus and DECnet over IP see the following presentations by Colin Butcher (well known VMS and networking consultant)

http://www.downloads.xdelta.co.uk/bootcamp%20jun2005/i220_decnet-plus_issue_1-1_10jun2004.pdf
http://www.downloads.xdelta.co.uk/vmstjv5%20feb2005/decnet%20article%20vms%20tj%20v5%20feb2005.pdf