Cisco 2600 Series, Operation Manual

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Overview of Cisco Network Modules 1-9
Cisco 2600 Series Interface Numbering
Cisco 2600 Series Interface Numbering
Each individual network interface on a Cisco 2600 series router is identified by a slot
number and a unit number.
Slot and Unit Numbering
The Cisco 2600 series router chassis contains one slot in which you can install a network
module. This is always slot 1.
Unit numbers identify the interfaces on the modules and WAN interface cards installed in
the router. Unit numbers begin at 0 for each interface type, and continue from right to left
and (if necessary) from bottom to top. Modules and WAN interface cards are identified by
interface type, slot number, followed by a forward slash (/), and then the unit number; for
example, Ethernet 0/0.
Figure 1-4 shows a router with a 2E 2-slot module in slot 1. One serial and one ISDN BRI
WAN interface card are installed in the module.
Figure 1-4 Cisco 2600 Series Unit Numbers
Note
WAN interface card slots (built into the chassis) are always numbered as slot 0, even
if the interface card is installed in the slot labeled W1.
Cisco 2612
100-240V– 1A
50/60 Hz 47 W
W0
W1
16552
Ethernet
0/0
Auxiliary
port
Console
port
Serial 0/0 Serial 0/1
2E
2W
W1
ETHERNET 1
ETHERNET 0
EN
AUI
WO
ACT
LNK
ACT LNK
AC
T
SERIAL
BRI
NT1
B1
B2
NT1
SEE MANUAL BEFORE INSTALLATION
AUX
CONSOLE
ETHERNET 0/0 ACT LINK
ACT TOKEN RING 0/0
LINK
SERIAL
CONN
W0
SERIAL CONN
Token
Ring 0/0
Serial 1/0
BRI 1/0
Ethernet
1/0
Ethernet
1/1