Specifications
Table 8
Interface Numbering on Cisco 2811, Cisco 2821, and Cisco 2851 Integrated Services Routers (continued)
Port Location
Voice port in a BRI expansion
module (internal slot) in an
extension voice module (EVM)
BRI interface in a BRI expansion
module (internal slot) in an
extension voice module (EVM)
1. Interface abbreviations: fa = Fast Ethernet; gi = Gigabit Ethernet; usb = universal serial bus; bri = ISDN basic rate interface.
2. The interfaces listed are examples only; other possible interface types are not listed.
3. Interface card slot numbers for double-width (HWIC-D) slots are 1 and 3 only.
4. Specify the line number in the Cisco IOS CLI by using the interface number for the associated asynchronous serial interface.
5. "1" is the network module slot number in all Cisco 2800 series routers.
6. "2" is the EVM slot number in Cisco 2821 and Cisco 2851 routers.
7. "0" is required by the CLI syntax for voice ports in an EVM; it indicates no interface card slots in EVMs.
On the Cisco 2811, Cisco 2821, and Cisco 2851 routers, the interface numbering scheme is the same for
Note
asynchronous interfaces as other types of interfaces. To configure the line associated with an async
interface, simply use the interface number to specify the async line. For example, line 0/3/0 specifies the
line associated with interface serial 0/3/0 on a WIC-2A/S in slot 3. Similarly, line 1/22 specifies the line
associated with interface async 1/22 on a NM-32A in network module slot 1.
Specifications
Table
Table 9
Description
Dimensions (H x W x D)
Weight
AC input power
•
•
•
•
Power consumption
Console and auxiliary ports
Overview of Cisco 2800 Series Routers
18
Interface Numbering Scheme
6
Interface-type 2
Port numbers are 8 to 11 in expansion module 0.
Port numbers are 16 to 19 in expansion module 1.
6
Interface-type 2
Port numbers are 0 to 3 if one expansion module is installed.
Port numbers are 0 to 7 if two expansion modules are installed.
9,
Table
10,
Table
11, and
Cisco 2801 Router Specifications
Input voltage
Frequency
Input current
Inrush surge current
7
/ 0
/ port
/ port
Table 12
list Cisco 2800 series specifications.
Specification
1.72 x 17.49 x 16.5 in. (4.4 x 44.4 x 41.9 cm).
10.9 lb (4.9 kg) with standard power supply if fully populated with
modules
13.71 lb (6.2 kg) with inline power supply if fully populated with
modules
100 to 240 VAC, autoranging
47 to 63 Hz
2 A (5 A for IP phone support)
50 A maximum, one cycle (–48V power included)
105 W with standard power supply (maximum)
130 W with inline power supply and 12 IP phones (maximum)
RJ-45 connector
1, 2
Examples
voice-port 2/0/x
interface bri 2/x
OL-5783-01
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