Avaya Communication Server 1000 Installation And Commissioning Manual page 65

Media Gateway Controller network connections
Figure 12: Single server port configuration: no dual-homing
A single server supports multiple MGCs using external networking equipment.
Figure 13: Single server port configuration: dual-homing (nondistributed) on page 65 shows
a typical network configuration that supports dual-homing of both the ELAN and TLAN network
interfaces. With this configuration, however, a single Layer 2 switch is still a single point of
failure.
Figure 13: Single server port configuration: dual-homing (nondistributed)
Figure 14: Single server port configuration: dual-homing (distributed) on page 66 shows a
typical network configuration that supports dual-homing of both the ELAN and TLAN network
interfaces. Multiple Layer 2 switches are used to ensure there is no single point of failure. Avaya
recommends this configuration for highest reliability in a single CPU Call Server configuration.
Note that the Layer 2 switch must be partitioned into separate VLANs to keep the ELAN and
TLAN traffic on separate subnets.
Media Gateway 1000E PRI Gateway Installation and Commissioning March 2013 65