Nortel 15000 Terminology page 41

DR
See designated router (DR) (page
default gateway
The gateway used to reach a destination if no other route is known or
provided.
Defense Network Secure Information Exchange (DNSIX)
A protocol defined in RFC 1038 and RFC 1108 for passing confidential data
securely over a network.
delta channel (D-channel)
A bidirectional channel, also known as the D-channel, used to carry call
control messages and signaling information over ISDN links.
designated router (DR)
When a LAN has multiple multicast routers attached, one of the routers is
elected as the router designated to forward the multicast traffic.
designated transit list (DTL)
A list of node and link identifiers that completely specify a path across a single
PNNI peer group. Link identifiers are optional.
device alarm
An alarm that originated from a device (for example, a Nortel Multiservice
Switch node).
DGCRA
See dynamic generic cell rate algorithm (DGCRA) (page
dial backup network link (DBNL)
A type of dial-in DPN gateway providing connectivity when a dedicated
connection breaks.
dial-in DPN gateway
A connection made by modem between a DPN module and a Nortel
Multiservice Switch node. The network link type is dial backup.
DiffServ
A Nortel Multiservice Switch IP differentiated service feature that provides IP
traffic management.
DiffServ domain
A group of virtual routers that are using the same
(page 101)
Copyright © 2006, Nortel
- 41 -
List of terms
definitions to apply differentiated services to IP traffic.
Nortel Multiservice Switch 7400/15000/20000
Terminology
NN10600-005 7.2S1 Standard
PCR7.2 and up March 2006
41).
45).
per-hop-behavior
Nortel Confidential