MSS User Guide | 5: Using the MSS |
Setting up dedicated hosts ensures that the units will always talk to each other. Enabling Autostart for both units enables one MSS to send data to the other MSS without having to wait for a serial carriage return to start the session.. The second MSS knows exactly which other MSS to accept connections from. Finally, when Autostart is enabled, the access mode must be either Local or Dynamic (Dynamic is more flexible).
Multihost Mode
Multihost mode is used to set up a data pipe between a serial device attached to the MSS and multiple hosts on the network. Data from any network host goes out of the MSS serial port, and data from the serial port is sent to all connected network hosts. The MSS does not alter the data in any way; it only forwards it between the serial port and the hosts.
There are a few important things to note about multihost connections:
The MSS attempts to send data in the order it is received. That is, it reads in and sends data from one host before reading in data from another host.
The MSS will ping TCP and UDP hosts before sending packets to make sure the remote hosts are active. If they are active, the MSS makes the real connection and passes the data. If not, the MSS will retry later. Similarly, if one of the host connections is terminated prematurely, the MSS will attempt to reconnect at preset intervals.
If a host's flow control or other settings block the MSS from sending, the MSS will skip it and send the data to the other hosts. However, the MSS does not keep a list of which hosts were skipped in the
When the MSS serial port is logged out, all host sessions are disconnected, leaving the port idle.
Enabling Multihost Mode
To configure the MSS for a dedicated multihost connection, use the Change Port Dedicated command.
Figure 5-11: Enabling Multihost Mode for MSS-VIA and MSS4
Local>> CHANGE PORT 1 DEDICATED HOSTLIST
Figure 5-12: Enabling Multihost Mode for MSS100
Local>> CHANGE DEDICATED HOSTLIST
When a dedicated connection is enabled, local mode hotkeys for session manipulation are disabled.
