tailieunhanh - ccna practical cisco routers phần 10

AARP gửi chương trình phát sóng tất cả các trạm trên mạng để phù hợp với địa chỉ phần cứng đến các địa chỉ điểm đến hợp lý cho các gói tin. AARP phát sóng Chương trình phát sóng đến tất cả các trạm trên một mạng AppleTalk để phù hợp với địa chỉ phần cứng đến các địa chỉ điểm đến hợp lý cho các gói tin. | GLOSSARY AARP AppleTalk Address Resolution Protocol A Network layer protocol that resolves AppleTalk network addresses to hardware addresses. AARP sends broadcasts to all stations on the network to match hardware addresses to logical destination addresses for packets. AARP broadcast Broadcasts to all stations on an AppleTalk network to match hardware addresses to logical destination addresses for packets. Access list A list of conditions called permit and deny statements that help regulate traffic flow into and out of a router. agents Software watchdogs used by SNMP to keep an eye on network processes. See also SNMP anding A method used by the router in which it compares or ands an IP address with its subnet mask to determine the network address. AppleTalk A routable networking architecture developed by Apple that provides network services to Apple Macintosh computers. area A subset of an internetwork containing several member routers. When several areas are grouped into a higher-level subset this organizational level is called a routing domain. ARP Address Resolution Protocol A TCP IP protocol used to map IP addresses to node hardware addresses. asynchronous communication Serial data transfer connections that rely on start and stop bits to make sure that the data is completely received by the destination device. ATM Asynchronous Transfer Mode An advanced packet-switching protocol that uses fixed packet sizes 53 bytes called cells to increase the throughput of the data transfer. Typically run over high-speed fiber optic networks. See also cells and SONET attenuation The degradation of the data signal over the run of the cable. 343 GLOSSARY autonomous system autonomous system In cases where link-state routing protocols are used that require greater memory and processing capabilities from the routers on the network it isn t uncommon to divide the internetwork into routing domains. In IP networks a routing domain is referred to as an autonomous system. See also border