Cisco 4000 Series Hardware Installation Manual page 49

Chapter 1 Overview of Cisco 4000 Series ISRs
In most cases, the router designates its interfaces using a 3-tuple notation that lists the slot, bay, and port.
The 3-tuple value is zero based. An example of a 3-tuple is 0/1/2. This refers to slot 0, the second bay in
slot 0 (the first bay is 0 so the second bay is 1), and the third port in bay 1. See
examples.
3-Tuple Example
0/1/2
0/0/1
1/1/1
Slots and bays are numbered from the left to the right, and from the top to the bottom.
•
The auxiliary (AUX) serial port and console (CON) serial port do not have slot, bay, or port
•
numbers.
The GE management port is named GE 0 and has a port number. It does not have a slot or bay
•
number.
The two USB ports are named USB0 and USB1. They do not have slot or bay numbers. Cisco 4331
•
ISR and Cisco 4321 ISR have only one USB port.
Note
Figure 1-38
Figure 1-38
1 Gigabit Ethernet management port
3 USB Type B mini port
5 RJ-45 Gigabit Ethernet port (GE 0/0/0)
OL-32185-02
Table 1-5
Slot
0
0
1
USB0 and USB1 can be used to insert flash drives.
shows the ports and slots on Cisco 4451-X ISRs.
Ports and Slots on the Cisco 4451-X ISRs
1 3 4
2
14 13
Hardware Installation Guide for the Cisco 4000 Series Integrated Services Router
Slots, Subslots (Bay), Ports, and Interfaces in Cisco 4000 Series ISRs
Slot, Subslot (Bay) and Port Numbering
Bay
2nd
1st
2nd
5 6 7
12 11 10
2 USB port 0
4 Auxiliary port
6 Small-form-factor pluggable (SFP)
0/Gigabit Ethernet port (GE 0/0/0)
Table 1-5 for more
Port
3rd
2nd
2nd
8
L
L
9
1-41