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List of terms
Nortel Multiservice Switch 7400/15000/20000
Terminology
NN10600-005 7.2S1 Standard
PCR7.2 and up March 2006
Copyright © 2006, Nortel Nortel Confidential
link delay synchronization (LDS)
A circumstance in which the receiving end of an IMA link group has measured
and compensated for the differential delay over a physical link. If this is the
case, then the link is considered to be in link delay synchronization (LDS).
link group (LG)
1 A group of links (Nortel Multiservice Switch trunks or DPN gateways)
between two nodes that can share traffic between the nodes. This allows
the available bandwidth between the two nodes to be greater than that of
a single link. A maximum of four links in a link group can be supported.
2 An IMA link group refers to the combination of multiple physical links that
use the inverse multiplexing process to transmit traffic across these links.
A link group is presented as a single link to the ATM layer. A link group
originates on one FP running the IMA feature and terminates on another
FP running the IMA feature (typically these FPs are on two different
Multiservice Switch nodes). Any link group can be composed of up to eight
DS1/E1 physical links on an FP running IMA.
link-level protocol (LLP)
A protocol that permits encapsulation of multiple protocols over a single ATM
virtual circuit.
link state advertisement (LSA)
A packet of information that determines the shortest path to a destination.
link-state algorithm
A routing technology in which each node broadcasts to all other nodes its view
of the links. When every node in the network does this, all nodes can derive
the complete topology and perform operations on that topology.
link state parameter
Information that captures an aspect or property of a link.
live alarm
An alarm that is issued by a fault or other significant event, rather than in
response to a replay command.
LLP
See link-level protocol (LLP) (page 73).
LMI
See local management interface (LMI) (page 75).
LN
1 See logical network (LN) (page 76).