Download Server Station Address Considerations
The NOVRAM's initial Download Server Station Address is the Broadcast address (that is, FF"FF"FF"FF"FF"FF hex). This value is assigned to allow for initial boot"up (especially for a memory"based node) where a VCP Server node or File Server node may be acquired over the LAN.
However, except for very special applications, the Download Server Station Address should be changed to an Individual Station Address of the node that will provide VCP and File Server services.
After boot"up, presuming Node Manager software is running, it is recommended that a node's Download Server Station Address be changed to its File Server Station Address. On system reboot or reinitialization of Node Manager software, the Link File directory for the applicable card will be automatically accessed by Node Manager.
File Server Station Address Considerations
Node Manager software uses a node's File Server Station Address as a pointer to the disk"based system (local or remote) designated to maintain the node's Link File directory. Through this directory, event logging for the node is performed.
A node's File Server Station Address is not stored in NOVRAM; instead, it is stored as a variable by the Node Manager software. Note the following:
DBefore the software initializes, the File Server Station Address cannot be set by the user. During software initialization, the address is either acquired through the use of the Download Server Station Address (stored in NOVRAM), or set to zero. For more information on this process, refer to the •Node Manager Software Initialization" section in Chapter 4.
DOnce the Node Manager software is running, the user can set and change the File Server Station Address for a particular LANIC card. If the software terminates, the address is •lost".
Packet Filter Mode Considerations
Using the SC command, a node is configured to receive and accept packets based on their Destination Addresses. See Chapter 4 for a discussion on Packet Filter Addressing modes.
For example, even if a node contains Multicast Addresses (see the Insert Multicast Address, IM, command), the node will be unable to receive applicable Multicast Address packets unless it is configured with one of the Multicast Address filter settings (see Table 5"7).
It is recommended that only those systems used for dedicated applications, such as online monitoring, be configured with Promiscuous mode settings.
Caution On an active network, a node configured for Promiscuous operation will consume significant system overhead and may render that system inaccessible.
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