HP-UX Reference (11i v1 00/12) - 4 File Formats (vol 8)

__________________________________________________________________________________________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________________________________________________________________________________________
STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man4/!!!intro.4
________________________________________________________________
___ ___
g
gated.conf(4) gated.conf(4)
default
host host
Glossary of Terms
Terms used in descriptions throughout this document are defined below:
adjacency
A relationship formed between selected neighboring routers for the purpose of exchanging routing
information. Not every pair of neighboring routers becomes adjacent.
autonomous system
A set of routers under a single technical administration, using an interior gateway protocol and com-
mon metrics to route packets within the AS, and using an exterior gateway protocol to route packets
to other ASs. Since this classic definition was developed, it has become common for a single AS to use
several interior gateway protocols and sometimes several sets of metrics within an AS. The use of the
term Autonomous System stresses that even when multiple igps and metrics are used, the adminis-
tration of an AS appears to other ASs to have a single coherent interior routing plan and presents a
consistent picture of what networks are reachable through it. The AS is represented by a number
between 1 and 65534, assigned by the Internet Assigned Numbers Authority.
BGP
Border Gateway Protocol
One of a class of exterior gateway protocols, described in more detail in the BGP section of the Proto-
col Overview.
cost An OSPF metric. See metric.
delay
A HELLO metric. Valid values are from zero to 30000 inclusive. The value of 30000 is the maximum
metric and means unreachable. See metric.
designated router
OSPF: Each multiaccess network that has at least two attached routers as a designated router. The
designated router generates a link state advertisement for the multiaccess network and assists in run-
ning the protocol. The designated router is elected by the HELLO protocol.
destination
Any network or any host.
distance
An EGP metric. See metric. Valid values are from zero to 255 inclusive.
egp
exterior gateway protocol
exterior routing protocol
A class of routing protocols used to exchange routing information within an autonomous system. A
detailed explanation of exterior gateway protocols is availablein the Protocol Overview.
EGP
Exterior Gateway Protocol
One of a class of exterior gateway protocols, described in more detail in the EGP section of the Proto-
col Overview.
gateway
An intermediate destination by which packets are delivered to their ultimate destination. A host
address of another router that is directly reachable via an attached network. As with any host address
it may be specified symbolically.
gateway_list
A list of one or more gateways separated by white space.
HELLO
One of a class of interior gateway protocols, described in more detail in the HELLO section of the Pro-
tocol Overview.
host
The IP address of any host. Usually specified as a dotted quad, four values in the range of 0 to 255
inclusive separated by dots (.). For example 132.236.199.63 or 10.0.0.51. It may also be
specified as an eight digit hexadecimal string preceded by 0x. For example 0x???????? or
HP-UX Release 11i: December 2000 − 50 − Section 4−−121
___
___