User Manual
COGE5, COGE5-F
page 27 of 110
© KEYMILE December 2015
EN/LZTBU 372 144/3 RA
110
Installation
4.4.4
Electrical Ethernet Interface Cable
COGE5 provides three electrical Ethernet traffic interfaces according to IEEE
802.3, 802.3u and 802.3ab specifications, and they support:
• 10BASE-T
• 100BASE-TX
• 1000BASE-T
COGE5 provides one electrical Ethernet local management port according to
IEEE 802.3 and 802.3u specifications, and it supports:
• 10BASE-T
• 100BASE-TX
All four interfaces are presented as RJ-45 connectors with automatic crosso-
ver functionality so they may be connected to both host and switch inter-
faces. Therefore both, crossover and straight cables can be used.
Please note:
For error free transmission, category 5e Ethernet cables are required at
least. This assumes that the equipment on the remote end also supports
transmission on category 5e cables. If this is not the case, we recommend
the use of category 6 cables.
Electrical 10BASE-T/100BASE-TX/1000BASE-T ports on COGE5 support
auto-negotiation with parallel detection.
Auto-Negotiation allows the highest performance mode to be automatically
selected on a given link.
Please note:
COGE5 Ethernet electrical interfaces are configured in auto negotiation
mode by default.
Please note:
With auto negotiation switched off, a crossed cable has to be used to con-
nect to another COGE5 since the interface cannot automatically select the
mode.
The following table shows the behaviour of COGE5 when connecting an
external Ethernet device:
Table 15:
COGE5 mode of operation
COGE5 mode
External Equipment mode
COGE5 election
Auto negotiation
Auto negotiation
1000 Mbit/s Full Duplex
Auto negotiation
1000 Mbit/s Full Duplex
1000 Mbit/s Full Duplex
Auto negotiation
1000 Mbit/s Half Duplex
1000 Mbit/s Half Duplex
Auto negotiation
100 Mbit/s Full Duplex
100 Mbit/s Full Duplex
Auto negotiation
100 Mbit/s Half Duplex
100 Mbit/s Half Duplex
Auto negotiation
10 Mbit/s Full Duplex
10 Mbit/s Full Duplex
Auto negotiation
10 Mbit/s Half Duplex
10 Mbit/s Half Duplex