Ha Configuration; Initial Ha Configuration; Network Topology Types And Rx/Tx Ethernet Port Group Settings - AudioCodes Mediant 4000 SBC User Manual

User's Manual
33

HA Configuration

This section describes HA configuration.
33.1

Initial HA Configuration

By default, HA is disabled on the device. When a device is loaded with valid HA
configuration and it is the first device to be loaded, it becomes the active device. The
second device that is loaded with HA configuration becomes the redundant (standby)
device.
33.1.1 Network Topology Types and Rx/Tx Ethernet Port Group
Settings
Initial HA configuration depends on how you want to deploy your HA system in the network.
The Maintenance interface, which is used for the HA link between active and redundant
device can use a dedicated Ethernet Device and Ethernet Group (port), or share the same
Ethernet Device and Ethernet Group with other IP network interface types (such as OAMP,
Media and Control). However, it is recommended that you configure the Maintenance
interface with a dedicated Ethernet Device and Ethernet Group to separate it from other IP
network interfaces.
If you want to separate the Maintenance interface from other interfaces, separation must
also be done externally to the devices, either physically (i.e., different physical networks) or
logically (using VLANs). When using VLANs, make sure that you use a different Ethernet
Device for each IP network interface (see ''Configuring Underlying Ethernet Devices'' on
page 127 and ''Configuring IP Network Interfaces'' on page 129).
Note:
•
The Maintenance interface is used for heartbeats and data transfer from active to
standby device and therefore, any short interval interruption in communication
may cause undesired switchovers.
•
If you assign the same Underlying Ethernet Device to all the IP network interfaces,
logical separation of traffic may not occur.
The Maintenance interface can employ Ethernet port redundancy (recommended), by
using two ports. This is enabled by configuring the Ethernet Group associated with the
Maintenance interface with two ports.
The required receive (Rx) and transmit (TX) mode for the port pair in the Ethernet Group
used by the Maintenance interface is as follows (not applicable to Mediant VE):
Version 7.2 605
33. HA Configuration
Mediant 4000 SBC