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Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03
Chapter 3 First-Time Configuration
Understanding the Cisco 3825 Router Interface Numbering
Figure 3-1 Cisco 3825 Router Slot and Port Numbers
Slot and Port Numbering
The Cisco 3825 router chassis contains the following LAN and WAN interface types:
• One Small Form Pulggable (SFP) port—industry standard Gigabit interface convertor
• Two built-in Gigabit Ethernet LAN interfaces (labeled GE 0/0 and GE 0/1)
• Four slots for installing Cisco 2-port T1/E1-RAN interface cards (labeled HWIC 0, HWIC1,
HWIC2, and HWIC3)
• Two slots for installing NM-2W network modules (supports up to four additional
Cisco 2-port T1/E1-RAN interface cards)
Note A removable face plate allows for installation of a double-wide NMD network module into NME
slot 2.
The logical slot numbers are as follows:
• 0 for all built-in Cisco 2-port T1/E1-RAN interface card slots
• 1 for the lower network module slot
• 2 for the upper network module slot
The numbering format is:
<Interface type> <Slot number> / <Subslot number> / <Port number>
For example:
Serial 0/0/0 (HWIC slot 0)
Serial 1/0/0 (NM slot 1)
280205
NMD-
ESW-
36
FastEthernet Ports
35x
10/100/1000
Base-Tx
GE1
17x
Network module
(NME) slot 1
Auxiliary
port
Gigabit Ethernet
(GIGE) ports
GE 0/0
GE 0/1
Small Form Pluggable
(SFP) port
High-speed WIC
(HWIC) slots
Network module
(NME) slot 2
Removable
face plate
Console
port
HWIC0
HWIC1
HWIC2HWIC3