Port clustering Introduction
Digi CM User Guide 132
Introduction
Port clustering is the ability to manage many serial ports on one or multiple slave devices from one
master device using a single IP address. For instance, the Digi CM unit can manage up to 16 slave
devices or a maximum 816 serial ports with one Master device. Ports can be configured either
collectively or individually depending on user preference. Each master and slave device is
configured separately; they cannot be configured from one master console.
A secondary IP address can be specified to put all slaves on a private network. The secondary IP
option can be found under Network –> IP configuration.
To set up the Digi CM unit for port clustering you will need to:
▪ Configure all the Digi CM serial ports.
▪ Assign one Digi CM unit as the master clustering device; all other Digi CM units default to slave
devices.
▪ Import slave configuration to the Digi CM unit’s master device.
Configure port clustering
Assign master clustering mode
To assign a Digi CM unit as the master cluster device, do the following:
1 Access the Digi CM unit through the web interface. This Digi CM unit needs to be the unit you
want as the Master.
2 Under the Clustering heading, choose Configuration.
3 Choose Master from the drop down menu.
Subsequent units will be configured in Slave mode by default.
Slave 2
192.168.1.103
Slave 1
192.168.1.102
IP 211.112.67.34
Master
Ports 7000-7031 - Local
8000-8031 - Slave 1
9000-9031 - Slave 2
Remote PC
Telnet 211.112.67.34 8005
Port 5
Server