Connection to the Network
25
in 1000 Mb/s electrical interfaces. Auto-negotiation is always enable if this interface is
being used.
Under normal circumstances, the preferred link speed is the highest available. Use
1000-FD, 100-FD and 10-FD settings if you want to analyse the link operation under
Table 2.4: Ethernet Auto-negotiation Setup
Setting Description
Enable Enables or disables the standard Ethernet auto-negotiation
procedure during the connection setup. Auto-negotiation sets
the link bit rate, duplex mode, flow control mode without user
intervention.
Disable Auto-negotiation only if you know that the remote
end does not support this procedure or if you want to check
link operation without auto-negotiating.
1000-FD Allows / disallows the interface to negotiate the 1000 Mb/s
transmission rate. This is the only choice available if an opti-
cal SFP transceiver for 1000BASE-X is attached to the port.
100-FD Allows / disallows the interface to negotiate the fast Ethernet
speed (100 Mb/s) if you are using the RJ-45 port or a com-
patible electrical SFP for data transmission.
10-FD Allows / disallows the interface to negotiate the 10 Mb/s
transmission rate if you are using the RJ-45 port or a compat-
ible electrical SFP for data transmission.
Clock role Sets the master / slave clock role in 1000BASE-T interfaces.
The available settings for this field are listed below:
• Auto: The master / slave role designation is automatic and
in principle random.
• Master: The synchronization master role is forced in the
interface. This is the right configuration for frequency offset
generation or sinusoidal phase modulation generation in
xGenius.
• Slave: The synchronization slave role is forced in the inter-
face. This is the right configuration value for frequency and
phase measurements over the interface, including MTIE
and TDEV, in the units with the.ability to measure these
metrics.
The clock role setting makes sense only if the equipment is
allowed to negotiate the 1000BASE-T interface over a native
RJ-45 port.
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