Sfp Ports; 10Base-T/100Base-Tx/1000Base-T Ports; Console Port - 3Com 4070 Getting Started Manual

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HAPTER NTRODUCING THE OM WITCH X AMILY

SFP Ports

The 24 SFP (Small Form Factor Pluggable) ports support fiber Gigabit
Ethernet short-wave (SX) and long-wave (LX) SFP Transceivers in any
combination. This offers you the flexibility of using SFP transceivers to
provide connectivity between the Switch and remote 1000 Mbps
workgroups or to create a high capacity aggregated link backbone
connection.
The default state for these ports is auto-negotiation enabled, where the
speed, duplex and flow control modes are negotiated. As the speed and
duplex modes are fixed by the media type, only the flow control is
negotiated with the link partner. Alternatively, auto-negotiation can be
disabled and the flow control setting can be manually configured.
10BASE-T/ The 10BASE-T/100BASE-TX/1000BASE-T ports have RJ-45 connectors and
100BASE-TX/ are configured as Auto MDIX (cross-over).
1000BASE-T Ports
The default state for these ports is auto-negotiation enabled, where the
speed, duplex and flow control modes of a link are automatically
detected to provide the highest available bandwidth with the link partner.
Alternatively, auto-negotiation can be disabled. These ports can be
manually configured to 10 Mbps half duplex, 100 Mbps half duplex,
10 Mbps full duplex or 100 Mbps full duplex. It is not possible to
manually configure a 1000 Mbps link as auto-negotiation is mandatory in
the 1000 Mbps standard. If auto-negotiation is disabled, Auto MDIX
cannot function and the ports are fixed as MDIX (cross-over) mode.
If auto-negotiation is disabled on a 1000 Mbps port, the speed will drop
to the highest available speed. By default this is 100 Mbps.

Console Port

The console port allows you to connect a terminal and perform remote or
local out-of-band management. The console port uses a standard null
modem cable and is set to autobaud (up to a maximum of 19,200 baud),
8 data bits, no parity and 1 stop bit.