3Com SuperStack II 3300 User Manual page 156

156 G
LOSSARY
OSPF Open Shortest Path First — OSPFv1 (RFC 1245) is an alternative to RIP
that overcomes many of its limitations; limited network size, slow to
stabilize and network traffic load. OSPFv1 in the Layer 3 Module
supports 32 areas, 32 virtual links and 64 neighbors.
OSPF area An OSPF area is a logical, user-defined group of networks, hosts, and
directly attached routers. All routers in an area converge onto the same
OSPF routing table.
OSPF stub area A type of OSPF area that contains routers with limited resources, such
as memory. The stub area cannot support virtual links or Autonomous
System boundary routers (ASBRs) and is at the outside edge of the
OSPF routing domain. Designating an OSPF area as a stub area allows
routers in the stub area to work successfully without being able to
route to the whole of the network.
RIPv1 Routing Information Protocol Version 1 — a simple protocol used to
exchange information between routers.
router convergence This occurs when all of the routers in a given OSPF area agree on the
best path to a destination.
routing A network management function responsible for forwarding packets
from their source to their destination. A number of routing algorithms
exist to suit different network topologies and requirements.
routing domain A collection of routers.
routing table A routing table contains various routing information including
destination/next hop associations and path desirability.
SNMP Simple Network Management Protocol — a protocol originally designed
to be used in managing TCP/IP internets. SNMP is presently
implemented on a wide range of computers and networking
equipment and may be used to manage many aspects of network and
endstation operation.
static route Static routes are entered manually into the routing table, and are used
to reach networks not advertised by routers.
subnet mask A subnet mask distinguishes the network ID part of an IP address from
the host ID part. A subnet mask is a 32-bit number expressed as four
decimal numbers, in the range 0 to 255, separated by periods.