Netgear XCM8806 Chassis User Manual - Page 933

NETGEAR 8800 User Manual L (Continued) LFS loop detection LSA LSDB M MAC address MAN master router MED MEP metering Link Fault Signal. LFS, which conforms to IEEE standard 802.3ae-2002, monitors 10 Gbps ports and indicates either remote faults or local faults. In ELRP, loop detection is the process used to detect a loop in the network. The switch sending the ELRP PDU waits to receive its original PDU back. If the switch received this original PDU, there is a loop in the network. Link state advertisement. An LSA is a broadcast packet used by link state protocols, such as OSPF. The LSA contains information about neighbors and path costs and is used by the receiving router to maintain a routing table. Link state database. In OSPF, LSDB is a database of information about the link state of the network. Two neighboring routers consider themselves to be adjacent only if their LSDBs are synchronized. All routing information is exchanged only between adjacent routers. Media access control address. The MAC address, sometimes known as the hardware address, is the unique physical address of each network interface card on each device. Metropolitan area network. A MAN is a data network designed for a town or city. MANs may be operated by one organization such as a corporation with several offices in one city, or be shared resources used by several organizations with several locations in the same city. MANs are usually characterized by very high-speed connections. In VRRP, the master router is the physical device (router) in the VRRP virtual router that is responsible for forwarding packets sent to the VRRP virtual router and for responding to ARP requests. The master router sends out periodic advertisements that let backup routers on the network know that it is alive. If the VRRP IP address owner is identified, it always becomes the master router. Multiple exit discriminator. BGP uses the MED metric to select a particular border router in another AS when multiple border routers exist. In CFM, maintenance end point is and end point for a single domain, or maintenance association. The MEP may be either an UP MEP or a DOWN MEP. In QoS, metering monitors the traffic pattern of each flow against the traffic profile. For out-of-profile traffic the metering function interacts with other components to either re-mark or drop the traffic for that flow. In the NETGEAR implementation, you use ACLs to enforce metering. Appendix E. Glossary | 933