Overview of Cisco 3600 Series Routers
Table of Contents
Overview of Cisco 3600 Series Routers
Hardware Features
Modules and Interface Cards
Memory
Interface Numbering
System Specifications
Regulatory Compliance
Overview of Cisco 3600 Series Routers
Cisco 3600 series routers are modular access routers with LAN and WAN connections that can be configured by means of interchangeable modules and WAN interface cards. With over 70 modular interface options, Cisco 3600 series routers provide solutions for data, voice, video, hybrid dial access, Virtual Private Networks (VPNs), and multiprotocol data routing.
This chapter includes the following sections:
Hardware Features
The Cisco 3600 series includes the Cisco 3620, Cisco 3640, Cisco 3631, and Cisco 3660 routers, which have the following features:
- Two slots for Personal Computer Memory Card International Association (PCMCIA) cards (Cisco 3620, Cisco 3640, and Cisco 3660 routers only)
- Flash memory capability
- Sockets for memory modules; either:
-
- Four sockets for DRAM single in-line memory modules (SIMMs), user-configurable as shared memory or main (processor) memory (Cisco 3620 and Cisco 3640 routers only)
- Two sockets for SDRAM dual in-line memory modules (DIMMs), user-configurable as shared memory or main (processor) memory (Cisco 3631 and Cisco 3660 routers only)
- High-speed console and auxiliary ports (up to 115.2 kbps)
- Hardware thermal alarm to warn of excessively high operating temperature
Figure 1-1 through Figure 1-4 show the front panels of the Cisco 3600 series routers.
Cisco 3620
The Cisco 3620 router includes these additional features:
- High-performance 80-MHz Reduced Instruction Set Computer (RISC) processor
- Two slots for network modules
- Can be installed in a 19-, 23-, or 24-inch rack, on a wall, or on a desk
- Can receive DC power from the Cisco Redundant Power System (RPS)
Figure 1-1 Front Panel of the Cisco 3620 Router
Cisco 3631
The Cisco 3631 router includes these additional features:
- High-performance 240-MHz PMC-Sierra RM7061A RISC processor
- One 10/100 Ethernet port
- Two slots for network modules
- One compact Flash memory card slot
- One Advanced Integration Module (AIM) slot
- 2 WIC/VIC slots
- Can be installed in a 19- or 23-inch rack or on a desk
Figure 1-2 Front Panel of the Cisco 3631 Router
Cisco 3640
The Cisco 3640 router includes these additional features:
- High-performance 100-MHz RISC processor
- Four slots for network modules
- Can be installed in a 19-, 23-, or 24-inch rack, or on a desk
- Can receive DC power from the Cisco Redundant Power System (RPS)
Figure 1-3 Front Panel of the Cisco 3640 Router
Cisco 3660
The Cisco 3660 router includes these additional features:
- High-performance 225-MHz RISC processor installed on a removable mainboard tray
- Six slots for hot swapping similar network modules
- Can be installed in a 19- or 23-inch rack, or on a desk
- Dual redundant, hot-swappable power supplies (second power supply is optional)
- Hot-swappable fan cage used to cool the chassis
- One or two onboard, autosensing, 10/100 Fast Ethernet interfaces
- Supports two Advanced Integration Modules (AIMs)
Figure 1-4 Front Panel of the Cisco 3660 Router
 |
Note The Cisco 3660 router platform consists of two router models: Cisco 3661 and Cisco 3662. The Cisco 3661 router with one Fast Ethernet interface (part number CISCO3661-xC) is shown in Figure 1-5, and the Cisco 3662 router with two Fast Ethernet interfaces (part number CISCO3662-xC or CISCO3662-xC-CO) is shown in Figure 1-6. |
Figure 1-5 and Figure 1-6 show Cisco 3660 AC power supplies installed. The DC power supplies differ in appearance but occupy the same bays in the router.
|
Note In this publication, references to Cisco 3660 routers include both Cisco 3661 and Cisco 3662 models. |
Figure 1-5 Cisco 3661 Router with One Fast Ethernet Interface
Figure 1-6 Cisco 3662 Router with Two Fast Ethernet Interfaces
Modules and Interface Cards
The latest information on network modules, WAN interface cards (WICs), voice interface cards (VICs), and advanced integration modules (AIMs) is available online and on the documentation CD-ROM.
- For information on installing network modules, refer to the following documents:
-
- For information on installing WICs and VICs, refer to the following documents:
-
- For information on installing AIMs, refer to the following documents:
-
Memory
This section describes the various types of memory that may be present in a Cisco 3600 series router.
Memory Types
Cisco 3600 series routers support the following types of memory:
- DRAM or SDRAM—Stores the running configuration and routing tables, and is used for packet buffering by the router's network interfaces. The Cisco IOS software executes from DRAM.
- Nonvolatile random-access memory (NVRAM)—Stores the system configuration file and the virtual configuration register. (For more information, see "Configuration Register.")
- Flash memory—Stores the operating system software image. You can also add Flash memory on PCMCIA cards and compact Flash cards, depending on the router.
- EPROM-based memory—Stores the ROM monitor, which allows you to boot an operating system software image from Flash memory or PCMCIA memory.
Memory Installation Documentation
For information about installing DRAM, SDRAM, NVRAM, and Flash memory SIMMs, refer to the following hardware configuration note:
For information about installing Flash memory PCMCIA cards, refer to the following hardware configuration note:
For information about installing compact Flash memory cards, refer to the following hardware configuration note:
Memory Specifications
Table 1-1 through Table 1-4 list processor and memory specifications for the routers.
Table 1-1 Cisco 3620 Router Processor and Memory Specifications
| Description |
Specification |
|
Processor
|
80-MHz IDT1 R4700 RISC
|
|
DRAM (main plus shared)
|
4 to 64 MB
|
|
NVRAM
|
32 KB
|
|
Flash memory (SIMM)
|
4 to 32 MB
|
|
Flash memory (PCMCIA)
|
2 to 40 MB
|
|
Boot ROM
|
512 KB
|
|
IDT = Integrated Device Technology.
|
Table 1-2 Cisco 3631 Router Processor and Memory Specifications
| Description |
Specification |
|
Processor
|
240-MHz PMC-Sierra RM7061A RISC processor
|
|
SDRAM (main plus shared)
|
64 to 256 MB
|
|
NVRAM
|
55 KB
|
|
Flash memory
(compact Flash)
|
32 to 128 MB
|
|
Boot ROM
|
512 KB
|
|
Table 1-3 Cisco 3640 Router Processor and Memory Specifications
| Description |
Specification |
|
Processor
|
100-MHz IDT R4700 RISC
|
|
DRAM (main plus shared)
|
4 to 128 MB
|
|
NVRAM
|
128 KB
|
|
Flash memory (SIMM)
|
4 to 32 MB
|
|
Flash memory (PCMCIA)
|
2 to 40 MB
|
|
Boot ROM
|
512 KB
|
|
Table 1-4 Cisco 3660 Router Processor and Memory Specifications
| Description |
Specification |
|
Processor
|
225-MHz QED RM5271
|
|
SDRAM (main plus shared)
|
32 to 256 MB
|
|
NVRAM
|
128 KB
|
|
Flash memory (SIMM)
|
8 to 64 MB
|
|
Flash memory (PCMCIA)
|
2 to 40 MB
|
|
Boot ROM
|
512 KB
|
|
Interface Numbering
Cisco 3620 and Cisco 3640 Interfaces
Each individual network interface on a Cisco 3620 or Cisco 3640 router is identified by a slot number and a unit number.
Slot Numbering
The Cisco 3620 or Cisco 3640 router chassis contains two or four slots in which you can install modules. You can install any module into any available slot in the chassis. For Cisco 3620 and Cisco 3640 routers, the slots are numbered as follows:
- Slot 0 is at the bottom right (as viewed from the rear of the chassis), near the power supply.
- Slot 1 is at the bottom left.
- Slot 2 is at the top right, above slot 0.
- Slot 3 is at the top left, above slot 1.
Unit Numbering
Cisco 3600 series routers have unit numbers that 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 1-7 shows a router with a 2E 2-slot module in slots 0 and 1. Two serial WAN interface cards are installed in the module in slot 0. One serial and one ISDN BRI WAN interface card are installed in the module in slot 1.
Figure 1-7 Cisco 3600 Series Unit Numbers
Voice Interface Numbering
Voice interfaces are numbered as follows:
interface-type chassis-slot/voice-module-slot/voice-interface
For example, Slot 1, voice network module slot 0, is referred to as voice 1/0/0 (closest to chassis slot 0).
Cisco 3631 Interfaces
Each individual interface (port) on a Cisco 3631 router is identified by number as described in the following sections.
WAN and LAN Interface Numbering
The Cisco 3631 router chassis contains the following WAN and LAN interface types:
- One built-in FastEthernet LAN interface
- Two slots in which you can install WAN interface cards (WICs)
- Two single-width slots (slot 1 and slot 2) in which you can install single-width network modules
The numbering format is Interface-type Slot-number/Interface-number. Two examples are:
FastEthernet 0/0Serial 1/2
The slot numbers are as follows:
- 0 for all built-in interfaces
- 0 for all WIC interfaces
- 1 for interfaces in the lower network module slot
- 2 for interfaces in the upper network module slot
Interface (port) numbers begin at 0 for each interface type, and continue from right to left and (if necessary) from bottom to top.
Figure 1-8 shows an example of interface numbering on a Cisco 3631 router with:
- A WIC in each WIC slot (containing interfaces serial 0/0 and serial 0/1 in physical slot W0, and interface serial 0/2 in physical slot W1)
- A 32-port asynchronous network module in slot 1 (containing interfaces serial 1/0 through serial 1/31)
- An alarm interface controller network module in slot 2 (internally connected to interface serial 2/0)
- One built-in Ethernet 10/100 interface—FastEthernet 0/0
Figure 1-8 Interface Numbering—Example
|
Note 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. Some examples are: |
- If slot W0 is empty and slot W1 contains a 1-port serial WIC, the interface 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.
Cisco 3660 Interfaces
Each individual network interface on a Cisco 3600 series router is identified by a slot number and port number.
Slot Numbering
The Cisco 3660 router chassis has six network module slots. Each network module slot accepts a variety of network module interface cards, supporting a variety of LAN and WAN technologies. Figure 1-9 shows the locations of the network module slots.
Figure 1-9 Cisco 3660 Slot Numbers
Modules and WAN interface cards are identified by interface type, slot number, followed by a forward slash (/), and then the port number; for example, Ethernet 0/0.
- Slot 0 contains fixed Fast Ethernet ports and is located at the top of the chassis.
- Slot 1 through Slot 6 accept up to six network modules.
Port numbers usually begin at 0 for each interface slot, and continue from right to left and, if necessary, from bottom to top. However, interface numbering for the Cisco 3660 series routers and for Ethernet and Token Ring network modules with two WAN interface card slots differs in the following ways:
- WAN interface card slot numbers always appear as slot 0, even if the interface card is installed in the slot labeled W1.
- WAN interface cards are numbered dynamically, starting with the first card installed. For example:
-
- If slot W0 is empty and slot W1 contains a 1-port serial WAN interface card, the interface number would be serial 0/0.
- If slot W0 contains a 2-port serial WAN interface card and slot W1 contains a 1-port serial interface card, serial 0/0 and 0/1 would reside in slot W0 and serial 0/2 would reside in slot W1.
Voice Interface Numbering
Voice interfaces are numbered differently from WAN interfaces. Voice interfaces are numbered as follows:
interface-type chassis-slot/voice-module-slot/voice-interface
If you have a 4-channel voice network module installed in slot 1 of your router, the voice interfaces will be as follows:
- Chassis-slot 1, voice-network-module-slot 0, voice-interface 0, referred to as voice 1/0/0 (closest to chassis-slot 0)
- Chassis-slot 1, voice-network-module-slot 0, voice-interface 1, referred to as voice 1/0/1
- Chassis-slot 1, voice-network-module-slot 1, voice-interface 0, referred to as voice 1/1/0
- Chassis-slot 1, voice-network-module-slot 1, voice-interface 1, referred to as voice 1/1/1 (farthest from chassis-slot 0)
System Specifications
Table 1-5 through Table 1-8 contain Cisco 3600 series system specifications.
Table 1-5 Cisco 3620 Router System Specifications
| Description |
Specification |
|
Dimensions (H x W x D)
|
1.75 x 17.5 x 13.5 inches (4.4 x 44.5 x 34.3 cm), one rack unit in height
|
|
Weight
|
23 lb (10.45 kg), maximum including chassis and two network modules
|
|
Input voltage, AC power supply
Current
Frequency
Input surge current (AC)
|
100 to 240 VAC, autoranging
2.0A
47 to 64 Hz
50A, one cycle
|
|
Input rating, DC power supply
Current
Input surge current (DC)
|
-3 to -75 VDC
5.0 A
65 A, 250 ms
|
|
Power dissipation
|
95 W (maximum)
|
|
Console and auxiliary ports
|
RJ-45 connector
|
|
Operating humidity
|
5 to 95%, noncondensing
|
|
Operating temperature
|
32 to 104\xb0 F (0 to 40\xb0 C)
|
|
Nonoperating temperature
|
-40 to 185\xb0 F (-40 to 85\xb0 C)
|
|
Noise level
|
45 dBA (maximum)
|
|
Regulatory compliance
|
FCC Part 15 Class A. For additional compliance information, refer to the Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Regulatory Compliance and Safety Information document that accompanied the router.
|
|
Safety compliance
|
UL 60950; CAN/CSA C22.2 No. 60950-00; IEC 60950; AS/NZS 3260; TS001
|
|
Table 1-6 Cisco 3631 Router System Specifications
| Description |
Specification |
|
Dimensions (H x W x D)
|
3.46 x 17.07 x 11.20 inches (8.78 x 45.36 x 28.45 cm), two rack units in height
|
|
Weight
|
15 lb (6.8 kg)
|
|
Input voltage, AC power supply
Current
Frequency
Input surge current (AC)
|
100 to 240 VAC, autoranging
2.0 A
47 to 63 Hz
50 A, one cycle
|
|
Input rating, DC power supply
Operational between
Current
Input surge current (DC)
|
-48 to -60 VDC
-48 to -60 VDC
4.0 A
50 A, 250 ms
|
|
Power dissipation
|
105 W (maximum)
|
|
Console and auxiliary ports
|
RJ-45 connector
|
|
Operating humidity
|
5 to 95%, noncondensing
|
|
Operating temperature
|
32 to 104\xb0 F (0 to 40\xb0 C)
|
|
Nonoperating temperature
|
-40 to 185\xb0 F (-40 to 85\xb0 C)
|
|
Noise level
|
45 dBA (maximum)
|
|
Regulatory compliance
|
FCC Part 15 Class A. For additional compliance information, refer to the Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Regulatory Compliance and Safety Information document that accompanied the router.
|
|
Safety compliance
|
UL 60950; CAN/CSA C22.2 No. 60950-00; IEC 60950; AS/NZS 3260; TS001
|
|
Table 1-7 Cisco 3640 Router System Specifications
| Description |
Specification |
|
Dimensions (H x W x D)
|
3.44 x 17.5 x 15.8 inches (8.7 x 44.5 x 40.0 cm), two rack units in height
|
|
Weight
|
30 lb (13.6 kg), including chassis and four modules
|
|
Input voltage, AC power supply
Current
Frequency
Input surge current (AC)
|
100 to 240 VAC, autoranging
2.0 A
47 to 64 Hz
50 A, one cycle
|
|
Input rating, DC power supply
Current
Input surge current (DC)
|
-38 to -75 VDC
5.0 A
65 A, 250 ms
|
|
Power dissipation
|
220 W (maximum)
|
|
Console and auxiliary ports
|
RJ-45 connector
|
|
Operating humidity
|
5 to 95%, noncondensing
|
|
Operating temperature
|
32 to 104\xb0 F (0 to 40\xb0 C)
|
|
Nonoperating temperature
|
-40 to 185\xb0 F (-40 to 85\xb0 C)
|
|
Noise level
|
51.9 dBA (maximum)
|
|
Regulatory compliance
|
FCC Part 15 Class A. For additional compliance information, refer to the Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Regulatory Compliance and Safety Information document that accompanied the router.
|
|
Safety compliance
|
UL 60950; CAN/CSA C22.2 No. 60950-00; IEC 60950; AS/NZS 3260; TS001
|
|
Table 1-8 Cisco 3660 Router System Specifications
| Description |
Specification |
|
Dimensions (H x W x D)
|
8.75 x 17.5 x 11.5 inches (22.1 x 44.5 x 29.1 cm), five rack units in height
|
|
Weight
|
48 lb (21.8 kg), including chassis, six modules, and two power supplies
|
|
Input voltage, AC power supply
(dual, redundant)
Current
Frequency
Input surge current (AC)
|
100 to 240 VAC, autoranging
4.0 A/2.0 A
47 to 63 Hz
50 A, half-cycle
|
|
Input rating, DC power supply
(dual, redundant)
Operational between
Current
Input surge current (DC)
|
-48 to -60 VDC
-36 to -72 VDC
10.0 A
50 A, 10 ms
|
|
Power dissipation
|
380 W (maximum)
|
|
Console and auxiliary ports
|
RJ-45 connector
|
|
Operating humidity
|
5 to 95%, noncondensing
|
|
Operating temperature
|
32 to 104\xb0 F (0 to 40\xb0 C)
|
|
Nonoperating temperature
|
-40 to 185\xb0 F (-40 to 85\xb0 C)
|
|
Noise level
|
50 dBA
|
|
Regulatory compliance
|
FCC Part 15 Class A. For additional compliance information, refer to the Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Regulatory Compliance and Safety Information document.
|
|
Safety compliance
|
UL 60950; CAN/CSA C22.2 No. 60950-00; IEC 60950; AS/NZS 3260; TS001
|
|
|
