User's Manual

DEC. 2011—EFT REVIEW DRAFT—CISCO CONFIDENTIAL
2-22
Cisco 1240 Connected Grid Router Hardware Installation Guide
OL-12345-01
Chapter 2 Router Hardware Description
Hardware Features Detailed Description
Ethernet Connections
The established Ethernet standard is IEEE 802.3. The router supports the following Ethernet
implementations:
• 1000BASE-T—1000 Mbps full-duplex transmission over a Category 5 or better unshielded
twisted-pair (UTP) cable. Supports the Ethernet maximum length of 328 feet (100 meters).
• 100BASE-T—100 Mbps full-duplex transmission over a Category 5 or better unshielded
twisted-pair (UTP) cable. Supports the Ethernet maximum length of 328 feet (100 meters).
• 10BASE-T—10 Mbps full-duplex transmission over a Category 5 or better unshielded twisted-pair
(UTP) cable. Supports the Ethernet maximum length of 328 feet (100 meters).
Fast Ethernet Ports
The router features four Fast Ethernet (FE) ports that can be connected to an Ethernet hub or switch. The
ports are labeled as follows (see
Figure 2-16):
• ETH 2/3
• ETH 2/4
• ETH 2/5
• ETH 2/6
Note Although port ETH 2/5 is labeled PoE, this port does not currently support Power over Ethernet (PoE).
Specifications
Gigabit Ethernet Ports
The router features two Gigabit Ethernet (GE) ports that can be connected to an Ethernet hub or switch.
The ports are labeled as follows (see
Figure 2-16):
• ETH 2/1
• ETH 2/2
Note Interfaces ETH 2/1 and ETH 2/2 are also used by the Small Form-Factor Pluggable (SFP) Ports. For
more information about how these ports are used together, see Combo Ports, page 2-26.
The GE ports automatically detect the type of any connected cable (fiber or copper) and then switch to
the corresponding mode (fiber or copper). When both cables types are connected to the router, the first
cable that establishes a link is enabled.
Specification Description
Connector type
RJ-45
Cables
Category 5 or higher
Interface speed
10BASE-T and 100BASE-TX
Time stamp
IEEE 1588
Pinouts
See Connector and Cable Specifications