1-3z If the types of parameter are the same for multiple rules, then the sum of parameters’weighting values of a rule determines its priority. The smaller the sum, the higher thematch priority.Ways to Apply an ACL on a SwitchBeing applied to the hardware directlyIn the switch, an ACL can be directly applied to hardware for packet filtering and trafficclassification. In this case, the rules in an ACL are matched in the order determined by thehardware instead of that defined in the ACL. For S5600 series Ethernet switches, the laterthe rule applies, the higher the match priority.ACLs are directly applied to hardware when they are used for:z Implementing QoSz Filtering the packets to be forwardedBeing referenced by upper-level softwareACLs can also be used to filter and classify the packets to be processed by software. In thiscase, the rules in an ACL can be matched in one of the following two ways:z config, where rules in an ACL are matched in the order defined by the user.z auto, where the rules in an ACL are matched in the order determined by the system,namely the “depth-first” order (Layer 2 ACLs, user-defined ACLs and IPv6 ACLs do notsupport this feature).When applying an ACL in this way, you can specify the order in which the rules in the ACLare matched. The match order cannot be modified once it is determined, unless you deleteall the rules in the ACL and define the match order.An ACL can be referenced by upper-layer software:z Referenced by routing policiesz Used to control Telnet, SNMP and Web login usersz When an ACL is directly applied to hardware for packet filtering, the switch will permitpackets if the packets do not match the ACL.z When an ACL is referenced by upper-layer software to control Telnet, SNMP and Weblogin users, the switch will deny packets if the packets do not match the ACL.Types of ACLs Supported by S5600 Series Ethernet SwitchesThe following types of ACLs are supported by S5600 series Ethernet switches:z Basic ACL
