Networking Capabilities; Ethernet Interface Configuration; Ethernet Interface Redundancy - AudioCodes Mediant 1000 User Manual

SIP User's Manual
8

Networking Capabilities

8.1

Ethernet Interface Configuration

The device's Ethernet connection can be configured (using the ini file parameter
EthernetPhyConfiguration) for one of the following modes:
Manual mode:
•
10Base-T Half-Duplex or 10Base-T Full-Duplex
•
100Base-TX Half-Duplex or 100Base-TX Full-Duplex
Auto-Negotiation: chooses common transmission parameters such as speed and
duplex mode
Auto-Negotiation falls back to Half-Duplex mode when the opposite port is not in Auto-
Negotiation mode, but the speed (i.e., 10/100Base-T) in this mode is always configured
correctly. Note that configuring the device to Auto-Negotiation mode while the opposite port
is set manually to Full-Duplex (either 10/100Base-T) is invalid (as it causes the device to
fall back to Half-Duplex mode while the opposite port is Full-Duplex). It's also invalid to set
the device to one of the manual modes when the opposite port is either Auto-Negotiation or
not exactly matching (both in speed and in duplex mode).
It's recommended to configure the port for Full-Duplex connections (not Half-Duplex) and
100Base-TX (not 10Base-T) due to the larger bandwidth. It's also strongly recommended to
use the same mode in both link partners. Any mismatch configuration can yield unexpected
functioning of the Ethernet connection.
Note that when remote configuration is performed, the device should be in the correct
Ethernet setting prior to the time this parameter takes effect. When, for example, the device
is configured using BootP/TFTP, the device must perform many Ethernet-based
transactions prior to reading the ini file containing this device configuration parameter. To
resolve this problem, the device always uses the last Ethernet setup mode configured. In
this way, if you want to configure the device to operate in a new network environment in
which the current Ethernet setting of the device is invalid, you should first modify this
parameter in the current network so that the new setting holds next time the device is
restarted. After reconfiguration has completed, connect the device to the new network and
restart it. As a result, the remote configuration process that takes place in the new network
uses a valid Ethernet configuration.
8.2

Ethernet Interface Redundancy

The device supports Ethernet redundancy by providing two Ethernet ports, located on the
CPU module. The Ethernet port redundancy feature is enabled using the ini file parameter
MIIRedundancyEnable. By default, this feature is disabled.
When Ethernet redundancy is implemented, the two Ethernet ports can be connected to
the same switch (segment / hub). In this setup, one Ethernet port is active and the other is
redundant. If an Ethernet connection failure is detected, the CPU module switches over to
the redundant Ethernet port. The CPU issues a Major alarm notifying of the failed physical
port. If the first Ethernet port connection is restored, the Major alarm is cleared. The first
physical port now becomes the redundant Ethernet port in case of failure with the active
physical port (which is currently the second physical port).
Version 5.4 445
8. Networking Capabilities
May 2008