D-Link 3312SR Reference Manual - Page 193

DGS-3312SR Layer 3 Gigabit Switch create access_profile ip source_ip_mask 255.255.255.0 profile_id 1 Here we have created an access profile that will examine the IP field of each frame received by the switch. Each source IP address the switch finds will be combined with the source_ip_mask with a logical AND operation. The profile_id parameter is used to give the access profile an identifying number − in this case, 1. The deny parameter instructs the switch to filter any frames that meet the criteria − in this case, when a logical AND operation between an IP address specified in the next step and the ip_source_mask match. The default for an access profile on the switch is to permit traffic flow. If you want to restrict traffic, you must use the deny parameter. Now that an access profile has been created, you must add the criteria the switch will use to decide if a given frame should be forwarded or filtered. Here, we want to filter any packets that have an IP source address between 10.42.73.0 and 10.42.73.255: config access_profile profile_id 1 add access_id 1 ip source_ip 10.42.73.1 deny Here we use the profile_id 1 which was specified when the access profile was created. The add parameter instructs the switch to add the criteria that follows to the list of rules that are associated with access profile 1. For each rule entered into the access profile, you can assign an access_id that both identifies the rule and establishes a priority within the list of rules. A lower access_id gives the rule a higher priority. The ip parameter instructs the switch that this new rule will be applied to the IP addresses contained within each frame's header. source_ip tells the switch that this rule will apply to the source IP addresses in each frame's header. Finally, the IP address 10.42.73.1 will be combined with the source_ip_mask 255.255.255.0 to give the IP address 10.42.73.0 for any source IP address between 10.42.73.0 to 10.42.73.255. Each command is listed, in detail, in the following sections. NOTE: As a stand-alone switch or as a master switch in a switch stack, the switch number will be referred to as 15 for all configurations, graphs and tables. create access_profile Purpose Syntax Description Used to create an access profile on the switch and to define which parts of each incoming frame's header the switch will examine. Masks can be entered that will be combined with the values the switch finds in the specified frame header fields. Specific values for the rules are entered using the config access_profile command, below. [ethernet {vlan | source_mac | destination_mac | 802.1p | ethernet_type} | ip {vlan | source_ip_mask | destination_ip_mask | dscp | [icmp {type | code} | igmp {type} | tcp {src_port_mask | dst_port_mask | flag_mask [all | {urg | ack | psh | rst | syn | fin}]} | udp {src_port_mask | dst_port_mask } | protocol_id {user_mask }]} | packet_content_mask {offset_0-15 | offset_16-31 | offset_32-47 | offset_48-63 | offset_64-79 }] {port [ | all]} [profile_id ] The create access_profile command is used to create an access profile on the switch and to define which parts of each incoming frame's header 187