Netgear XCM8806 Chassis User Manual - Page 922

E. Glossary E A AAA ABR ACL alternate port AP area ARP Authentication, authorization, and accounting. A system to control which computer resources specific users can access and to keep track of the activity of specific users over the network. Area border router. In OSPF, an ABR has interfaces in multiple areas, and it is responsible for exchanging summary advertisements with other ABRs. Access Control List. ACLs are a mechanism for filtering packets at the hardware level. Packets can be classified by characteristics such as the source or destination MAC, IP addresses, IP type, or QoS queue. Once classified, the packets can be forwarded, counted, queued, or dropped. In XCM8800 software, you configure ACLs by creating a file, called a policy file (with a .pol file extension). The system parses the policy file and loads the ACL into the hardware. In RSTP, the alternate port supplies an alternate path to the root bridge and the root port. Access point. In wireless technology, access points are the devices that connect to the regular wired network and forward and receive the radio signals that transmit wireless data. In OSPF, an area is a logical set of segments connected by routers. The topology within an area is hidden from the rest of the AS. Address Resolution Protocol. ARP is part of the TCP/IP suite used to dynamically associate a device's physical address (MAC address) with its logical address (IP address). The system broadcasts an ARP request, containing the IP address, and the device with that IP address sends back its MAC address so that traffic can be transmitted. Appendix E. Glossary | 922