LANVCP Operations
This chapter explains the software and procedures for downloading a memory"based system to another computer and for using the remote VCP over a LAN. This software and procedures may also collectively be referred to as LANVCP.
Memory%Based System, LAN, and VCP
A memory"based system is a system executing entirely in memory without a disk. The memory"based system is downloaded over an IEEE 802.3 LAN (downloading over an Ethernet LAN is not supported) to a remote system. This is done from the remote system, either interactively or automatically on power"up. The remote boot process is not supported over gateways. A gateway node is one that belongs to two separate networks. Therefore, you cannot remotely boot a system in another network.
When describing a memory"based system over a LAN, the server refers to the system in control, usually the local node that is running the download monitor program, VCPMT (described later). The client refers to the memory"based system that is being downloaded to or controlled. A single server can serve up to 28 downloads simultaneously per LAN interface card.
Downloading and controlling a memory"based system is done by running the LAN"based remote VCP (Virtual Control Panel) program called RMVCP. All the systems must be on the same LAN. By running RMVCP, you can obtain the VCP prompt at your terminal as if you were directly connected to the remote system where VCP is executing. From your node, you can run VCP commands remotely.
There is a remote VCP feature in the DS/1000"IV and NS"ARPA/1000 products called DSVCP. DSVCP works only over HDLC links. This feature is documented in the DS/1000"IV and NS"ARPA/1000 manuals.
Hardware and Software Requirements
The following hardware and software are required to create memory"based nodes on a LAN. Refer to the HP 12076A LAN/1000 Link Local Area Network Interface Controller Installation Manual, part number 12076"90001, for information on configuring the LAN card. For information on using the LAN Node Manager software, refer to the other chapters in this manual (HP 12076A LAN/1000 Link Node Manager's Manual, part number 12076"90002).
DLAN cards - Every HP 1000 A"Series system that is going to be remotely booted must have a LAN card and must be on the same LAN as the server. The remote boot process is not supported over gateways.
For remote VCP operation, the LAN card on the client must have the VCP enabled (U1S1 [switch 1] in the closed position). Note that only one interface card per system can have the VCP enabled.
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