Lucent Technologies PortMaster - Manual (Page 332)

Glossary
Glossary-22 PortMaster Configuration Guide
Multichassis PPP
Multilink PPP over two or more chassis.
Multilink PPP
A protocol defined in RFC 1990 that allows a PortMaster to automatically bring up
additional ISDN B channels as bandwidth needs increase. See also Multichassis PPP.
multiexit discriminator
In BGP, an arbitrary rating number that the PortMaster can use to enforce the use of
preferred exit and entry points when multiple connections exist between its autonomous
system and another. The PortMaster assigns the multiexit discriminator to any route that
it advertises to its external peers, and forwards any multiexit discriminator it learns from
its external peers on to its internal peers. A lower number indicates a greater preference
for a route when more than one exists to a destination through multiple peers within the
same neighboring autonomous system. You can use a routing policy rule to override this
value and assign your own multiexit discriminator to a route that you learn or advertise.
multihome routing
In BGP, the process of choosing among multiple exit points to route packets out of a
single autonomous system, typically to the Internet. Routers in a multihomed
autonomous system usually store large amounts of network reachability information to
help them select the best exit point. See also easy-multihome.
multiline load balancing
The ability of a PortMaster to add additional lines when network traffic is heavy. If more
than one line to a remote location is established, the PortMaster balances the traffic
among the lines. Distinct from Multilink PPP.
N
name server
A server connected to a network that resolves hostnames into network addresses.
name service
The software system that provides a database of authorized users for a computer, subnet,
or network. The system can reside on one device, or be distributed across several devices
in a network.