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13 Ethernet
Table 13-17 Order of changing line speed
#
Down-shift
functionality
1
On
2
3
--: A down-shift operation is not performed. The usual auto-negotiation is performed.
#1: The number indicates the line speed.
(7) Notes on a 10BASE-T, 100BASE-TX, or 1000BASE-T connection
If a switch and the remote device to be connected to do not have the same
transmission speed and duplex mode (full or half), the devices cannot be connected.
If these settings on the devices are different, communication might stop. If
communication stops, execute the
execute the
When using 100BASE-TX, use a twisted pair cable (UTP) of category 5 or higher as
the connection cable. When using 1000BASE-T, use a twisted pair cable (UTP) of
enhanced category 5 or higher as the connection cable.
A full-duplex interface is implemented by not using collision detection and loopback
functions. Therefore, to use 10BASE-T or 100BASE-TX under a full-duplex setting,
make sure that you set the connecting interface of the remote device to full-duplex.
If 1000BASE-T is used, only full-duplex auto-negotiation mode is supported.
13.6.2 Automatic SFP recognition (selection of media type) [AX1250S]
[AX1240S]
A Gigabitethernet port on the Switch is used as either an RJ45
(10BASE-T/100BASE-TX/1000BASE-T) port or an SFP (100BASE-FX/1000BASE-X) port
exclusively. In the default configuration with which these Switches ship, automatic
detection of a media type is set. If SFP is detected, SFP is used. (When link-up is detected
on a 1000BASE-X port, the media type is switched to SFP.)
To use a fixed media type (fixed to SFP or RJ45), set it by using the
configuration command.
182
Phase
Configuration (speed parameter setting)
auto
1
10 100
1000
2
10 100
3
10
activate
operation command for the relevant ports.
auto 10
auto 10
100 1000
100
10 100
10 100
1000
10 100
10
10
--
inactivate
operation command, and then
#1
Remar
ks
auto 1000,
auto 100,
or
auto 10
--
--
--
media-type
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