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C122-B001-02EN
5-7
5.2 Main GSWB Functions
Auto-sense and auto-negotiation functions
The auto-sense and auto-negotiation functions are available. Auto-sense is a function
for the port itself, for detecting the speed of a connected unit. Auto-negotiation,
which is a protocol between two units stipulated in IEEE802.3u, sets the
communication speed, the communication mode (full duplex or half duplex), and
whether to use the flow control function. If units, both of which have the auto-
negotiation function, are connected to each other, the common mode is determined in
accordance with the priority stipulated in IEEE802.3u.
• Interface support
The table below lists whether interfaces have the auto-negotiation function.
Table 5.6 Interface support for auto-negotiation
Y: Supported
N: Unsupported
• Setting priority
The table below lists the setting priority for auto-negotiation.
Table 5.7
Auto-negotiation priority
LAN type
Location
Interface
Auto-negotiation
function
Remarks
Business
LAN
Front
1000 BASE-T
Y
BackPlane SerDes
N
Communication speed:
1 Gbps (fixed)
Communication mode:
Full duplex (fixed)
Priority
Communication
speed
Communication
mode
1
1 Gbps
Full duplex
2
Half duplex
3
100 Mbps
Full duplex
4
Half duplex
5
10 Mbps
Full duplex
6
Half duplex
Summary of Contents for PRIMEQUEST 440
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