3Com 2928 User Guide - Page 458

Item Check Established Source TCP/UDP Port Destination Operator Port To Port Operator Port To Port Precedence Filter DSCP TOS Precedence Time Range Description Select this option to make the rule match packets used for establishing and maintaining TCP connections. These items are available only when you select 6 TCP from the Protocol drop-down box. Select the operators and type the source port numbers and destination port numbers as required. These items are available only when you select 6 TCP or 17 UDP from the Protocol drop-down box. Different operators have different configuration requirements for the port number fields: z Not Check: The following port number fields cannot be configured. z Range: The following port number fields must be configured to define a port range. z Other values: The first port number field must be configured and the second must not. Specify the DSCP priority. Specify the ToS preference. Specify the IP precedence. If you specify the ToS precedence or IP precedence when you specify the DSCP precednece, the specified TOS or IP precedence does not take effect. Select the time range during which the rule takes effect. Available time ranges are those that have been configured. Return to IPv4 ACL configuration task list. Configuring a Rule for an Ethernet Frame Header ACL Select QoS > ACL IPv4 from the navigation tree and then select the Link Setup tab to enter the rule configuration page for an Ethernet frame header IPv4 ACL, as shown in Figure 1-5. 1-9