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Cisco MWR 1900 Mobile Wireless Edge Router Software Configuration Guide
78-13983-04
Chapter2 First-Time Configuration
Before You Begin
Figure 2-1 Front of the MWR 1900
The Cisco MWR 1900 router chassis contains the fo llowing LAN and WAN interface types:
•Two built-in Fast Ethernet LAN interfaces
•Two slots in which you can install Voice/WAN interface cards (VWICs)
The slot numbers are as follows:
•0 for all built-in interfaces
•0 for all VWIC interfaces
The numbering format is:
Interface type Slot number/Interface number
Interface (port) numbers begin at 0 for each interface type, and continue fr om right to left.
The two built-in Ethernet 10/100 interfaces are Fast Ethernet 0/0 and Fast Ethernet 0/1.
The slot number for all VWIC interfaces is always 0. (The W0 and W1 slot designations are for physical
slot identification only.) Interfaces in the VWICs are numbered from right to left, starting with 0/0 for
each interface type, regardless of the physical slot in which the VWICs are installed.
For example, if you have a VWIC in each VWIC slot, then the interfaces are Serial 0/0 and Serial 0/1 in
physical slot W0 and Serial 0/2 and Serial 0/3 in physica l slot W1. However, if you install a VWIC in
physical slot W1 (leaving slot W0 empty), the interfaces in slot W1 are Serial 0/0 and Serial 0/1. If you
then add a VWIC to slot W0, the interface numbering will shift. The configuration that you created for
interfaces Serial 0/0 and Serial 0/1 will now be applied to the VWIC in slot W0 and you will need to
create a new configuration for the interfaces that you previously configured on W1 (which will now be
Serial 0/2 and Serial 0/3).
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SEE MANUAL BEFORE INST
ALLA
TION
SEE MANUAL BEFORE INST
ALLA
TION
DSU
56K
CONSOLEAUXILIARY
Network module
slot (future)
Fast
ethernet
LEDs:
Activity (G)
Speed (G)
Link (G)
VWIC LEDs:
Alarm (A)
Loopback (A)
Carrier detect (G)
VWIC
position 0
2 ports
VWIC
position 2
(future)
2 FE
ports VWIC
position 1
2 ports
Compact
flash slot
Console
port
Auxiliary
port
VWIC LEDs:
Alarm (A)
Loopback (A)
Carrier detect (G)
Power (G)
Air vent (both sides)
Status (G) Chassis LEDs
Activity (G)