Cisco 2811 ROUTER 2FE 1NME 4HWIC 2PVDM 2AIM IP BASE WITH A/C POWER SUPPLY 仕様ガイド

The IEEE has established Ethernet as standard IEEE 802.3. Cisco 2800 series routers support 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).

The Cisco 2801 and Cisco 2811 routers do not support the 1000BASE-T Ethernet 
implementation.

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).

Refer to the 

 online document for information about 

Ethernet cables, connectors, and pinouts.

Serial connections are provided by WAN interface cards and network modules. For more information 
on WAN interface cards, refer to the

. For more information on 

network modules, refer to the 

. These documents 

are accessible online at Cisco.com.

Before you connect a device to a serial port, you need to know the following:

Type of device, data terminal equipment (DTE) or data communications equipment (DCE), you are 
connecting to the synchronous serial interface

Type of connector, male or female, required to connect to the device

Signaling standard required by the device

The serial ports on the asynchronous/synchronous serial network modules and the serial WAN interface 
card use DB-60 connectors. Serial ports can be configured as DTE or DCE, depending on the serial cable 
used.

A device that communicates over a synchronous serial interface is either a DTE or DCE device. A DCE 
device provides a clock signal that paces the communications between the device and the router. A DTE 
device does not provide a clock signal. DTE devices usually connect to DCE devices. The 
documentation that accompanied the device should indicate whether it is a DTE or DCE device. (Some 
devices have a jumper to select either DTE or DCE mode.) 

 lists typical DTE and DCE devices.