CHAPTER13 Network
Mediant 800 Gateway & E-SBC | User's Manual
Configuring IP Network Interfaces
You can configure a single VoIP network interface for all applications, including OAMP
(management traffic), call control (SIP signaling messages), and media (RTP traffic), or you can
configure multiple logical, IP network interfaces for these applications. You may need to logically
separate network segments for these applications for administration and security. This can be
achieved by employing Layer-2 VLANs and Layer-3 subnets. The figure below illustrates a typical
network architecture where the device is configured with three network interfaces, each
representing the OAMP, call control, and media applications. The device is connected to a VLAN-
aware switch for directing traffic from and to the device to the three separated Layer-3 broadcast
domains according to VLAN tags (middle pane).
The device is shipped with a default OAMP interface (see Default IP Address). The IP Interfaces
table lets you change this OAMP interface and configure additional network interfaces for control
and media, if necessary. You can configure up to 12 interfaces, consisting of up to 11 Control and
Media interfaces including a Maintenance interface if your device is deployed in a High Availability
(HA) mode, and 1 OAMP interface. Each IP interface is configured with the following:
■ Application type allowed on the interface:
● Control: call control signaling traffic (i.e., SIP)
● Media: RTP traffic
● Operations, Administration, Maintenance and Provisioning (OAMP): management (i.e.,
Web, CLI, and SNMP based management)
● Maintenance: This interface is used in HA mode when two devices are deployed for
redundancy, and represents one of the LAN interfaces or Ethernet Groups on each device
used for the Ethernet connectivity between the two devices. For more information on HA
and the Maintenance interface, see Configuring High Availability.
■ IP address (IPv4 or IPv6) and subnet mask (prefix length)
■ Default Gateway: Traffic from this interface destined to a subnet that does not meet any of the
routing rules (local or static) are forwarded to this gateway.
■ (Optional) Primary and secondary domain name server (DNS) addresses for resolving FQDNs
into IP addresses.
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