Netgear GSM7224 GSM7224 User Manual - Page 221
O, P, non-stub area, Open Systems Interconnection, packet, Point-to-Point Protocol, Port Mirroring
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User Manual for the NETGEAR 7200 Series Layer 2 Managed Switch Software nm Nanometer (1 x 10e9) meters. non-stub area Resource-intensive OSPF area that carries a default route, static routes, intra-area routes, interarea routes, and external routes. Non-stub areas are the only OSPF areas that can have virtual links configured across them, and are the only areas that can contain an ASBR. Compare with stub area. See also ASAM and OSPF. (Cisco Systems Inc.) O Open Systems Interconnection OSI is a seven (7) layer architecture model for communications systems developed by the ISO for the interconnection of data communications systems. Each layer uses and builds on the services provided by those below it. OSI See "Open Systems Interconnection" on page 13. P packet A block of information sent over a network. A packet typically contains a source and destination network address, some protocol and length information, a block of data, and a checksum. PDU See "Protocol Data Unit" on page 14. PHY The OSI Physical Layer: The physical layer provides for transmission of cells over a physical medium connecting two ATM devices. This physical layer is comprised of two sublayers: the Physical Medium Dependent (PMD) sublayer, and the Transmission Convergence (TC) sublayer. Point-to-Point Protocol PPP. A protocol allowing a computer using TCP/IP to connect directly to the Internet. Port Mirroring Also known as a roving analysis port. This is a method of monitoring network traffic that forwards a copy of each incoming and outgoing packet from one port of a network switch to another port where the packet can be studied. A network administrator uses port mirroring as a diagnostic tool or debugging feature, especially Glossary 202-10009-01_060204 C-13
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