An SNMP agent communicates through a port that accepts UDP traffic and another port that accepts TCP traffic. By default, all TCP traffic uses the host server's listen port. For example, if you target this agent to a server named ManagedServer1 and ManagedServer1 listens for requests on port 7001, then the SNMP agent listens for TCP requests on port 7001. When communicating through a TCP port, WebLogic Server protects SNMP communication from denial of service (DOS) attacks.
If you want to separate SNMP TCP traffic from business traffic, you can create a custom network channel.
Any SNMP agent that you target to this WebLogic Server instance will automatically use the SNMP network channel that you created.