Nortel 1000 Branch of?ce Installation And Commissioning Manual page 39

You can connect the MGC to a Layer 2 switch to handle signaling between
the Call Server and the MG 1000Bs. If two of the MGC ELAN ports connect
to separate Layer 2 switches, the MG 1000B can remain operational if one
of the Layer 2 switches fails.
MG 1000B shelves must have a data network connectivity to the ELAN
port of the Call Server. The design of the data networking configuration is
outside the scope of this document. The engineering of the data network is
documented in the Data Networking for Voice over IP (NN43001-260) NTP.
The MG 1000B with MGC by default supports Auto Negotiate mode on
the embedded Ethernet interfaces; you must configure the networking
equipment to which they connect as Auto Negotiate. If the MGC Ethernet
ports do not auto-negotiate to 100 Mb Full Duplex, an alarm occurs, as
issues can arise if the speed is not 100 Mb, and if the duplex is only half. A
CLI command is also available on the MGC to turn off auto-negotiation for
the embedded Ethernet interfaces, which configures the interfaces to 100
MB Full Duplex. No other speed or duplex options are available on the MGC.
CS 1000B/MG 1000B with MGC - Data Network Topology illustrates a
typical robust network topology.
Figure 4
CS 1000B and MG 1000B with MGC - Data Network Topology
Copyright © 2007, Nortel Networks
.
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
MG 1000B with MGC Data Networking 39