Port requirements for the CDC Replication Engine for Db2® for i
CDC Replication requires that you allocate a port for communication with client workstations running Management Console and other servers.
The ports must be accessible through a firewall, although you do not require access to the internet.
| Protocol | Default Port | IN/OUT | Purpose |
|---|---|---|---|
| TCP | 11111 | IN | Accepts connections from Management Console,Access Server, command line utilities, and other installations of CDC Replication as a source of replication |
| UDP | 2222 | IN | This port is only required if you enabled the autodiscovery feature in Access Server 10.2.1 and earlier. The port listens for broadcasts from Access Server, which detects all running installations of CDC Replication. |
| TCP | 11111 | OUT | When you add a subscription in Management Console, if the subscription uses the datastore you configured as a source of data (source datastore), then you need a TCP port so that the subscription can connect to the target datastore. |
| UDP | 10101 | OUT | Auto-discovery replies are sent back to Access Server on this port. Auto-discovery is enabled by default. |