![]() Unlike Router ACL, VACL is not defined in a direction but it is possible to filter traffic based on the direction of the traffic by combining VACLs and Private VLAN features. All packets entering the VLAN are checked against the VACL. VLAN ACL is used to filter traffic of a VLAN (traffic within a VLAN i.e traffic for destination host residing in the same VLAN). (Access-list, is a set of various permit or deny conditions, used for packet filtering) If we want some hosts not able to reach other hosts within the same VLAN, then the concept of VLAN Access-list or Private VLAN can be used. If we create different VLANs then by default, a host from one VLAN can communicate with all the hosts residing in the same VLAN. VLAN (Virtual LAN) is a concept in which we divide the broadcast domain into smaller broadcast domains logically at layer 2. Prerequisite – Virtual LAN (VLAN), Access-lists (ACL) Network Devices (Hub, Repeater, Bridge, Switch, Router, Gateways and Brouter). ![]() Introduction of MAC Address in Computer Network. ![]() Inter-Switch Link (ISL) and IEEE 802.1Q. ![]()
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