Nortel 1000E PRI, Руководство по установке и пусконаладке

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64 Connect PRI Gateway components
network interfaces do not autonegotiate to 100 Mb full-duplex, an alarm
is generated as issues could arise if the speed is not 100 Mb and if the
duplex is only half. See
“Media Gateway Controller system alarms, events,
and messages” (page 155) for a list of all system messages. A CLI
command is also available on the MGC to turn off auto-negotiation for the
embedded network interfaces, which configures the interfaces to 100 MB
full-duplex. No other speed or duplex options are available on the MGC.
Figure 11 "Data network providing redundancy" (page 64) illustrates a
typical robust network topology.
Figure 11
Data network providing redundancy
Media Gateway Controller network connections
Figure 12 "Single server port configuration: no dual-homing" (page 65) and
Figure 13 "Single server port configuration: dual-homing (nondistributed)"
(page 66)
show two different connections to the external data equipment
for the dual-homing feature: distributed and nondistributed.
Nondistributed means that both network interfaces (TLAN or ELAN) of
the dual-homing feature are connected to a single Layer 2 switch, which
provides a single point of failure if that switch goes out of service.
Distributed means that the two network interfaces (TLAN or ELAN) of the
dual-homing feature are connected to separate Layer 2 switches, which
provides another level of redundancy and no single point of failure with a
Nortel Communication Server 1000
Media Gateway 1000E PRI Gateway Installation and Commissioning
NN43041-311 04.01 4 June 2010
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