Allied Telesis AT-SBx81CFC960, Installation Manual

Page: 162 / 324

Chapter 8: Installing the Transceivers and Cabling the Ports
162 Section II: Installing the Chassis
Cabling the NET MGMT Port on the AT-SBx81CFC960 Card
For background information on the NET MGMT port on the controller card,
refer to “Ethernet Management Port (NET MGMT)” on page 73.
Note
The NET MGMT port is referred to as “eth0” in the management
software.
Here are the guidelines to using the NET MGMT port:
 The cabling requirements of the port are the same as the ports on
the AT-SBx81GT24 Line Card, in Table 12 on page 52.
 The default speed setting for the port is Auto-Negotiation. This
setting is appropriate if the port is connected to a network device
that also support Auto-Negotiation.
 The default speed setting of Auto-Negotiation is not appropriate if
the port is connected to a network device that does not support
Auto-Negotiation and has a fixed speed or 10 or 100 Mbps. In this
situation, disable Auto-Negotiation and set the port’s speed
manually to match the speed of the network device.
 The port must be set to Auto-Negotiation, the default setting, to
operate at 1000Mbps.
 The default duplex mode setting for the port is Auto-Negotiation.
This setting is appropriate if the port is connected to a network
device that also support Auto-Negotiation for the duplex mode.
 The default duplex mode setting of Auto-Negotiation is not
appropriate if the port is connected to a network device that does
not support Auto-Negotiation and has a fixed duplex mode. In this
situation, you should disable Auto-Negotiation on the port and set
its duplex mode manually to avoid the possibility of a duplex mode
mismatch. With Auto-Negotiation, the port defaults to half-duplex if
it detects that the end node is not using Auto-Negotiation. This can
result in a mismatch if the end node is operating at a fixed duplex
mode of full-duplex.
 The default wiring configuration of the port is automatic MDIX
detection, which configures the MDI/MDIX setting automatically.
This setting is appropriate for port if it is connected to a network
device that also support the feature.
 The default wiring configuration of automatic MDIX detection is not
appropriate for the NET MGMT port if it is connected to a network
device that does not support the feature. You should disable
automatic MDIX detection and set the wiring configuration
manually with the POLARITY command.