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Cisco Connected Grid Ethernet Switch Module Interface Card Getting Started Guide
OL-23421-02
Chapter 1 Product Overview
Ports
10/100BASE-T Ports
You can set the 10/100BASE-T ports on the switch to operate in any combination of half duplex, full
duplex, or 10 or 100 Mb/s. You can set the ports for speed and duplex auto-negotiation. The default
setting is auto-negotiate.
When set for auto-negotiation, the switch determines the speed and duplex settings of the attached
device, and advertises its own capabilities. If the connected device also supports auto-negotiation, the
switch negotiates the best connection (the fastest line speed that both devices support and full-duplex
transmission if the attached device supports it), and configures itself accordingly. In all cases, the
attached device must be within 328 feet (100 meters).
The 10/100BASE-T ports use RJ-45 connectors with Ethernet pinouts. The maximum cable length is 328
feet (100 meters). The 100BASE-TX traffic requires Category 5, Category 5e, or Category 6 unshielded
twisted pair (UTP) cable. The 10BASE-T traffic can use Category 3 or Category 4 UTP cable.
Note On the GRWIC-D-ES-2S-8PC switch module, the first four 10/100 Fast Ethernet ports (FE0/1, FE0/2,
FE0/3, FE0/4) are PoE+ ports.
PoE and PoE+ Ports
The first four 10/100 Fast Ethernet ports (FE0/1, FE0/2, FE0/3, FE0/4) on the GRWIC-D-ES-2S-8PC
switch module are PoE+ ports.
Warning
Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if
interconnections are made using uninsulated exposed metal contacts, conductors, or terminals.
Avoid using such interconnection methods, unless the exposed metal parts are located within a
restricted access location and users and service people who are authorized within the restricted
access location are made aware of the hazard. A restricted access area can be accessed only through
the use of a special tool, lock and key or other means of security.
Statement 1072
These PoE+ ports provide:
• Support for IEEE 802.3af-compliant powered devices (up to 15.4 W PoE per port) and support for
IEEE 802.3at-compliant powered devices (up to 30 W PoE+ per port).
• Support for prestandard Cisco powered devices.
• Configurable support for Cisco intelligent power management, including:
–
enhanced power negotiation
Table 1-3 GRWIC-D-ES-2S-8PC Port Labeling
Port Description
8 10/100BASE-T ports FE0/1, FE0/2, FE0/3, FE0/4, FE0/5, FE0/6,
FE0/7, FE0/8
Dual-purpose port (10/100/1000BASE-T port and
100/1000 Mb/s SFP module slot)
GE0/1
100/1000 Mb/s SFP module slot GE0/2