Netgear XCM8806 Chassis User Manual - Page 926
cluster, combo port, CRC error, default encapsulation mode, designated port, Device Manager
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NETGEAR 8800 User Manual C (Continued) cluster combo port CoS CRC CRC error CSPF In BGP, a cluster is formed within an AS by a route reflector and its client routers. Combination port. On some NETGEAR devices, certain ports can be used as either copper or fiber ports. Class of Service. Specifying the service level for the classified traffic type. Cyclic redundancy check. This simple checksum is designed to detect transmission errors. A decoder calculates the CRC for the received data and compares it to the CRC that the encoder calculated, which is appended to the data. A mismatch indicates that the data was corrupted in transit. Cyclic redundancy check error. This is an error condition in which the data failed a checksum test used to trap transmission errors. These errors can indicate problems anywhere in the transmission path. Constrained shortest path first. An algorithm based on the shortest path first algorithm used in OSPF, but with the addition of multiple constraints arising from the network, the LSP, and the links. CSPF is used to minimize network congestion by intelligently balancing traffic. D DA Destination address. The DA is the IP or MAC address of the device that is to receive the packet. DAD Duplicate Address Detection. IPv6 automatically uses this process to ensure that no duplicate IP addresses exist. default encapsulation mode In STP, default encapsulation allows you to specify the type of BPDU encapsulation to use for all ports added to a given STPD, not just to one individual port. The encapsulation modes are: • 802.1d-This mode is used for backward compatibility with previous STP versions and for compatibility with third-party switches using IEEE standard 802.1d. • EMISTP-Multiple Instance Spanning Tree Protocol (EMISTP) mode is an extension of STP that allows a physical port to belong to multiple STPDs by assigning the port to multiple VLANs. • PVST+-This mode implements PVST+ in compatibility with third-party switches running this version of STP. designated port In STP, the designated port provides the shortest path connection to the root bridge for the attached LAN segment. Each LAN segment has only one designated port. Device Manager The Device Manager is an NETGEAR-proprietary process that runs on every node and is responsible for monitoring and controlling all of the devices in the system. The Device Manager is useful for system redundancy. 926 | Appendix E. Glossary
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