Configuring Ip Network Interfaces - AudioCodes Mediant 4000 SBC User Manual

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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 separated 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).

untagged (i.e., removes the VLAN ID).

[1] Tagged = (Default for new Ethernet Devices) The Ethernet

Device accepts packets that have the same VLAN ID as the

Ethernet Device and sends packets with this VLAN ID. For all

Ethernet Devices that are associated with the same Ethernet

Group (see 'Underlying Interface' parameter above) and

configured to Tagged, incoming untagged packets received

on this Ethernet Group are discarded.

Note: Only one Ethernet Device can be configured as Untagged

per associated Ethernet Group. In other words, if multiple

Ethernet Devices are associated with the same Ethernet Group,

only one of these Ethernet Devices can be configured to

Untagged; all the others must be configured to Tagged.

Figure 12-2: Multiple Network Interfaces

Mediant 4000 SBC