Configuring Ip Interface Settings - AudioCodes Mediant 3000 User Manual

After start-up is complete and the operational software is running, the device continues to
use the Ethernet port used for software upload. The device switches over from one
Ethernet port to the other each time an Ethernet link carrier-loss is detected on the active
Ethernet port, and if the Ethernet link of the other port is operational. Switchover occurs
only once per link loss (i.e., the 'secondary' interface stays the active one even if the
'primary' interface has returned to life). After start-up, the device generates a gratuitous
ARP message each time a switchover occurs.
For correct functionality of the redundancy mechanism, it's recommended to configure both
links to the same mode. It is essential that both link partners (primary and secondary) have
the same capabilities. This ensures that whenever a switchover occurs, the device is able
to provide at least the same Ethernet services as were provided prior to the switchover. In
addition, it's recommended to set the physical secondary link prior to resetting the device
(since the MAC configuration cannot be changed thereafter).
Note that since the two Ethernet ports use the same MAC address, the external switches
connected to the device can in some cases create a noticeable switchover delay due to
their internal switching logic, though at the device level, the switchover delay is minimal
(milliseconds).
10.3

Configuring IP Interface Settings

The Multiple Interface Table page allows you to configure logical VoIP network interfaces.
Each interface can be defined 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 (such as Web- and SNMP-based management)

IP address and subnet

VLAN ID

Default Gateway

Primary and secondary DNS IP address
You can configure up to 32 interfaces - up to 31 Control and/or Media interfaces, and 1
OAMP interface.
A combination of multiple IP addresses of IPv4 and IPv6 interfaces can also be defined.
However, only one interface (of IPv4 type) must be defined for OAMP; the rest being
Media, Control, or a combination of Media and Control. The IPv6 Internet Layer protocol is
based on the definition of a 128-bit address (as opposed to 32 bits for IPv4).
This page also provides VLAN-related parameters for enabling VLANs and defining the
Native VLAN ID. This is the VLAN ID to which incoming, untagged packets are assigned.
For assigning VLAN priorities and Differentiated Services (DiffServ) for the supported Class
of Service (CoS), see Configuring the QoS Settings on page 134.
SIP User's Manual 106
Mediant 3000
Document #: LTRT-89712