Cisco Cisco VN 2900 Network Adaptation Interface Installation Guide

Connectivity fault management (CFM) 

Flow control

Online insertion and removal (OIR)

Install the Fast Ethernet HWICs in the following Cisco routers:

Cisco 1841 integrated services router

Cisco 2800 series integrated services routers

Cisco 3800 series integrated services routers

Insert Fast Ethernet HWICs into HWIC slots only. They do not fit into WIC/VIC slots.

 shows the maxmum number of each type of HWIC that may be installed, the slot locations, and 

slot numbering for each platform.

For information about HWIC slot locations on each router, see the “Interface Card Slot Locations and 
Numbering on Cisco Access Routers” section of the Cisco Interface Cards for Cisco Access Routers 
guide located at:

Port numbers identify the interfaces on the modules and interface cards installed in the router. Modules 
and interface cards are identified by three digits: slot number/subslot number/port number. 

For example, HWIC port 0 in HWIC subslot 1 of router slot 0 is represented as:

interface FastEthernet 0/1/0

Cisco 1841

1 may be installed

1 may be installed

1

1.

Requires Cisco IOS Release 12.4(24)T or later. 

Slot 0 and slot 1

Cisco 2801

1 to 2 may be installed

1 may be installed

Slot 1 and slot 3 support HWICs

Cisco 2811

1 to 2 may be installed

1 may be installed

Slot 0 to slot 3

Cisco 2821

1 to 2 may be installed

1 may be installed

Slot 0 to slot 3

Cisco 2851

1 to 2 may be installed

1 may be installed

Slot 0 to slot 3

Cisco 3825

1 to 4 may be installed

1 to 2 may be installed

Slot 0 to slot 3

Cisco 3845

1 to 4 may be installed

1 to 2 may be installed

Slot 0 to slot 3