Interface Numbering
Figure 1-11 Interface Numbering in Chassis with 1-RU Height
SE RIA
L
A/ S
CN/L P
3
RXC
RXD
TXC
10
1
WIC Slot 1 (Serial 0/1)
2
WIC Slot 0 (Serial 0/0)
3
Auxiliary Port
4
Console Port
5
Ethernet 0/0
Figure 1-12
A 2-port T1 network module in slot 1 (containing the following ports: T1 1/0 and T1 1/1)
•
Two built-in Ethernet 10/100 interfaces—Fast Ethernet 0/0 and Fast Ethernet 0/1
•
A WIC in each WIC slot (containing interfaces Serial 0/0 and Serial 0/1 in physical slot W0,
•
interface Serial 0/2 in physical slot W1, and interface BRI 0/0 in physical slot W2)
–
–
–
Note
Cisco 2600 Series Routers Hardware Installation Guide
1-10
1
TXD
CN/L P
2
RXC
RXD
TXC
TXD
CN/L P
1
RXC
RXD
TXC
W 1
TXD
CN/L P
RXC
0
RXD
TXC
TXD
EN
LIN K
TO KE N
RI NG 0/0
AC T
9
8
7
6
shows a router of 2-RU height with:
If physical slot W0 is empty and physical slot W1 contains a 1-port serial WIC, the interface
number in the WIC is numbered Serial 0/0.
If slot W0 contains a 2-port serial WIC and slot W1 contains a 1-port serial WIC, the interfaces
in physical slot W0 are numbered Serial 0/0 and Serial 0/1, and the interface in physical slot W1
is numbered Serial 0/2.
If slot W0 contains a 2-port serial WIC and slot W1 contains a 1-port BRI WIC, the interfaces
in physical slot W0 are numbered Serial 0/0 and Serial 0/1, and the interface in physical slot W1
is numbered BRI 0/0.
The slot number for all WIC interfaces is always 0. (The W0 and W1 slot designations are for
physical slot identification only.) Interfaces in the WICs are numbered from right to left, starting
with 0/0 for each interface type, regardless of which physical slot the WICs are installed in.
2
C is co 26
W 0
12
10 0- 24
W 0
0V – 1A
50 /6 0 Hz
W 0
47 W
LIN K
ET HE RN
ET 0/0
AC T
CO NS OL
E
AU X
5
3
4
6
Ethernet 0/1 (Optionally: Token Ring 0/0)
7
Network Module Port 0 (Serial 1/0)
8
Network Module Port 1 (Serial 1/1)
9
Network Module Port 2 (Serial 1/2)
10 Network Module Port 3 (Serial 1/3)
Chapter 1
Overview of Cisco 2600 Series Routers
OL-2171-06
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