Features Of Pnni - 3Com CoreBuilder 7000 Operation Manual

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HAPTER RIVATE

Features of PNNI

N - -N I
ETWORK TO ETWORK NTERFACE
any one node. These are the addresses of the nodes that any one node is
physically or logically connected to. QoS metrics include information on
available bandwidth, guaranteed cell delay, jitter, and other performance
options available for establishing a new ATM connection. The
administrative weight can be modified via the LMA by the network
manager. (See "Setting Interface Parameters" on page 424 in the
Management Guide for information on modifying the various
administrative weights.) The remaining QoS metrics are modified by the
switch per session. After the node has collected all the information it
needs to complete its database, it will then be able to calculate the best
route to its destination.
The signaling protocol, used in point-to-point (P2P) and
point-to-multipoint (P2M) connections across the ATM network, is based
on the ATM Forum UNI 3.1 Signaling Specifications. Additions were made
to the specification to allow for source routing, crankback, and alternate
routing as well as ATM anycast. Anycast is the ability to allow an
application to request a P2P connection over a single ATM end system
that is part of an ATM group.
Key features include:


Easy configuration


Fast detection and reaction to changes in network


Intelligent routing protocol


Support of all UNI 3.1 and some UNI 4.0 characteristics


Hierarchical routing capabilities


High scalability


Multiple routing metrics and attributes support


ATM anycast support


Physical links and tunneling over VPCs support


Incorporation with external routing domains that do not necessarily
use PNNI


QoS support


Operation in the presence of partitioned areas
(PNNI) V 1.0
ERSION