ZyXEL NetAtlas User Guide - Page 282

Chapter 19 EPON Profile Configuration Table 141 EPON Profile Configuration > Add Policy Link Rule Profile (continued) LABEL DESCRIPTION OK Click this to save the settings and close the screen. Cancel Click this to discard all changes and close the screen. 19.1.7.1 Editing a Packet Filtering Rule Select an entry under Rule and click the Set... button in the Add Policy Link Rule Profile screen to display the following screen. Figure 178 EPON Profile Configuration > Add Policy Link Rule Profile > Set Rule The following table describes the labels in this screen. Table 142 EPON Profile Configuration > Add Policy Link Rule Profile > Set Rule LABEL DESCRIPTION Active Select this check box to enable this rule. Field Left Mask Clear this check box to disable the rule. Select the packet filtering criteria. The value format in a Boolean comparison is 64-bit long. If the value you specified is less than 64 bits, select a mask between 0 and 63 to define how many bit(s) from the left will turn to zero and not be used for comparison when the specified value is right-aligned. This is useful when you want to check only few bits in a pre-defined field, such as the 3-bit CoS value (by setting the left mask to 48 and the right mask to 13) or 12-bit VLAN ID (by setting the left mask to 52) in a 32-bit VLAN tag. For example, if the value you specified is a network address with a 24-bit subnet mask, set the left mask to 32 and the right mask to 8. 282 NetAtlas EPON Manager User's Guide