1-2
Cisco 2600 Series Routers Hardware Installation Guide
OL-2171-06
Chapter 1 Overview of Cisco 2600 Series Routers
Hardware Features
In addition to the interfaces listed in Ta ble 1-1, Cisco 2600 series routers include the following hardware
features:
• Dynamic random-access memory (DRAM) for main memory and shared memory (Cisco 261x and
Cisco 262x routers)
• Synchronous dynamic random-access memory (SDRAM) for main memory and shared memory
(Cisco 26xxXM, Cisco 265x, and Cisco 2691 routers)
• Nonvolatile random-access memory (NVRAM) for storing configuration information
• Flash memory—Stores the operating system software image. In Cisco 2691 routers, flash memory
is a CompactFlash memory card. In all other Cisco 2600 series routers, flash memory is a single
inline memory module (SIMM).
• EIA/TIA-232 (RJ-45) console port for local system access by using a console terminal
• EIA/TIA-232 (RJ-45) auxiliary port for remote system access or dial backup by using a modem
Figure 1-1 and Figure 1-2 show examples of Cisco 2600 series routers.
Note Cisco 2600 series routers are either single rack-unit (1RU) or two rack-unit (2RU) high.
Note The number and type of interfaces vary, depending on the specific router.
Figure 1-1 Cisco 2600 Series Router Rear Panel—Example of 1RU Router
Cisco2621XM——2121
Cisco 2650——1121
Cisco2650XM——1121
Cisco 2651——2121
Cisco2651XM——2121
Cisco2691——2132
Table 1-1 Summary of Cisco 2600 Series LAN Interfaces (continued)
Model
Ethernet
(10BASE-T)
Token Ring
(RJ-45)
Fast Ethernet
(10/100)
Network
Module Slot
WAN Interface
Card Slots
Advanced
Integration
Module Slots
SEE MANUAL BEFORE INSTALLATION
SERIAL 1
SERIAL 0
CONN
CONN
WIC
2A/S
SEE MANUAL BEFORE INSTALLATION
SERIAL 1
SERIAL 0
CONN
CONN
WIC
2T
Cisco 2650
W
1
100-240V– 1A
50/60 Hz 47 W
W
0
A
U
X
C
O
N
S
O
LE
E
T
H
E
R
N
E
T
0
A
C
T
LIN
K
10/100BASE-T
Ethernet 0/0
(RJ-45)
Auxiliary port
(RJ-45)
Console
port (RJ-45)
Cisco 2650
31617
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