Continue Button for Router Serial Number is Grey
Overview of the Router
The Cisco 1900 Series Integrated Services Routers (ISRs) are modular routers with LAN and WAN connections that can be configured by means of interchangeable interface cards and internal service modules (ISMs). The series currently consists of the 1905, 1921, 1941, and 1941W (wireless) models. The 1941W is Wi-Fi CERTIFIED™ and 802.11a/b/g/n-compliant. The modular design of the routers provides flexibility, allowing you to configure your router according to your needs.
This ISR series has new slots that support next generation Enhanced High-Speed WAN Interface Cards (EHWICs), Internal Services Modules (ISMs, 1941 only), and 2 CompactFlash cards (1941 only). Universal serial bus (USB) ports are available for USB devices, and a USB mini Type-B serial console port is available in addition to the RJ-45 console connector.
This chapter provides an overview of the Cisco 1900 series routers and includes the following sections:
- Safety Warnings
- Chassis Views
- Hardware Features
- Interface Numbering
- Specifications
- Regulatory Compliance
Safety Warnings
Warning 
IMPORTANT SAFETY INSTRUCTIONS
This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071
SAVE THESE INSTRUCTIONS
Warning Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040
Warning No user-serviceable parts inside. Do not open. Statement 1073
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030
Safety Warnings for Finland, Norway and Sweden
Warning statement 1017 applies to the countries of Finland, Norway, and Sweden.
Warning This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017
Chassis Views
This section contains views of the front and rear panels of Cisco 1900 series routers, showing the locations of the power and signal interfaces, the interface card slots, and the status indicators.
Figure 1-1 shows the front panel of the Cisco 1905 and Cisco 1921 router. Figure 1-2 shows the back panel connectors on the Cisco 1905 and Cisco 1921 router. Figure 1-3 shows the front panel of a Cisco 1941 wireless router and Figure 1-4 shows the LEDs of the Cisco 1941 router. Figure 1-5 shows the back panel connectors on the Cisco 1941 router.
Power off the router and the power over Ethernet (PoE) before installing an EHWIC in the Cisco 1905 and Cisco 1921 ISRs. Figure 1-1shows the front panel of the Cisco 1905 and Cisco 1921 router and LED names.
Figure 1-1 Front Panel of the Cisco 1905, and Cisco 1921 Router
1.Power over Ethernet (PoE) is available with optional external PoE power supply.
2.Power off the PoE before installing an EHWIC in the Cisco 1905 and Cisco 1921 ISRs.
Power off the PoE before installing an EHWIC in the Cisco 1905 and Cisco 1921 ISRs. Figure 1-2 shows the back panel of the Cisco 1905 and Cisco 1921 with ports and LEDs.
Figure 1-2 Back Panel of the Cisco 1905 and Cisco 1921 Router (1921 shown)
| | EHWIC (HWIC, WIC, or VWIC3) slots 0 and 1—slot 0 (Right), slot 1 (Left), or double wide4 5 6 7 | | EN (Enable RJ-45 console) |
| | RJ-45 serial console port | | AUX port |
| | GE 0/1 | | GE 0/0 |
| | S (Speed) | | L (Link) |
| | USB port—USB 2.0 Type-A port | | KensingtonTM security slot |
| | PoE8 | | Ground connector |
| | On/Off switch | | Input power connection |
| | Baud reset | | USB serial port—USB 5-pin mini USB Type-B |
| | EN (Enable USB console) | | Flash |
3.VWIC support is for data only.
4.Double-wide slot on the 1921 only.
5.The 1905 slot 0 (Right) comes with a permanently installed interface card. Only slot 1 (Left) is available.
6.Only 1 EHWIC Gigabit Ethernet Switch can be installed in a 1905 or 1921.
7.See Module Support on Cisco's Integrated Services Routers Generation 2 http://cisco.com/en/US/prod/collateral/routers/ps10538/aag_c07_563807.pdf for supported modules.
8.Power off the PoE before installing an EHWIC in the Cisco 1905 and Cisco 1921 ISRs.
Figure 1-3 shows the front panel of a Cisco 1941 wireless router with antennas mounted.
Note The Cisco 1905 comes with a permanently installed EHWIC in slot 0 (Right).
Figure 1-3 Front Panel of the Cisco 1941W Router
| | Antenna mounts9 | | LEDs10 |
9.The antenna mounts are not available on the non-wireless models.
10.Some LEDs are not available on the non-wireless models.
Figure 1-4 shows the front panel of the Cisco 1941W (without antennas) with the LED names.
Figure 1-4 Cisco 1941 and Cisco 1941W Router LEDs
| | SYS | | ACT |
| | PoE | | WLAN |
| | 2.4 or 5 GHz | |
Figure 1-5 shows the Cisco 1941 and 1941W back panel with ports and LEDs.
Figure 1-5 Back Panel of the Cisco 1941 and Cisco 1941W Router
| | USB ports—two USB 2.0 Type-A ports (USB 0=Bottom) | | L (Link) |
| | GE 0/1 | | S (Speed) |
| | RJ-45 serial console port | | EN (Enable RJ-45 console) |
| | USB serial port—USB 5-pin mini USB Type-B | | EN (Enable USB console) |
| | HWIC slot 0 (EHWIC, HWIC, WIC, or VWIC11)—single wide12 | | ISM13 or WLAN |
| | CF 0 | | CompactFlash 0 |
| | HWIC slot 1 (EHWIC, HWIC, or WIC)—double wide14 | | CF 1 |
| | CompactFlash 1 | | KensingtonTM security slot |
| | On/Off switch | | Input power connection |
| | AUX port | | S (Speed) |
| | GE 0/0 | | L (Link) |
11.VWIC support is for data only.
12.See Module Support on Cisco's Integrated Services Routers Generation 2 http://cisco.com/en/US/prod/collateral/routers/ps10538/aag_c07_563807.pdf for supported modules.
13.Internal Service Module (ISM).
14.The double-wide slot can accommodate a single wide EHWIC, HWIC, WIC, or VWIC (data only), on the left side of the slot.
Hardware Features
- Product Serial Number Location
- Built-In Interfaces
- Removable, Interchangeable, and Optional Modules
- Memory
- LED Indicators
- Chassis Ventilation
- Real-Time Clock
- Chassis Security
- Wireless LAN Connectivity
- Baud Reset Button
Product Serial Number Location
The serial number and common language equipment identifier (CLEI) label for the Cisco 1905 and Cisco 1921 router is located on the rear of the chassis. (See Figure 1-6.) The product ID (PID) label for the Cisco 1905 and Cisco 1921 series routers is located on the bottom of the chassis. (See Figure 1-8.) The serial number label for the Cisco 1940 series routers is located on the rear of the chassis on a pull-out tab. (See Figure 1-8.)
Figure 1-6 Serial Number and CLEI Location on Cisco 1905 and Cisco 1921 Routers
| | Common Language Equipment Identifier (CLEI) | | Serial Number (SN) |
Figure 1-7 PID and Compliance Label on Cisco 1905 and Cisco 1921 Routers
| | Product ID (PID) | | Compliance label |
Figure 1-8 Serial Number, PID/VID, and CLEI Number Location on Cisco 1940 Series Routers
| | Product ID (PID) | | Serial Number (SN) |
| | Product ID/Version ID (PID/VID) | | Common Language Equipment Identifier (CLEI) |
Note The serial number for Cisco 1900 series routers is 11 characters long.
Cisco Product Identification Tool
The Cisco Product Identification (CPI) tool provides detailed illustrations and descriptions showing where to locate serial number labels on Cisco products. It includes the following features:
- A search option that allows browsing for models using a tree-structured product hierarchy
- A search field on the final results page making it easier to look up multiple products
- End-of-sale products are clearly identified in results lists
The tool streamlines the process of locating serial number labels and identifying products. Serial number information expedites the entitlement process and is important for access to support services.
The Cisco Product Identification tool can be accessed at the following URL:
http://tools.cisco.com/Support/CPI/index.do
Built-In Interfaces
Table describes the interfaces available on the Cisco 1900 series routers.
Note Either the RJ-45 console port or USB console port may be used. They can not both be used at the same time.
| | |
|---|---|
| Gigabit Ethernet (GE) | Two GE ports (RJ-45 connectors). |
| RJ-45 Console | One console port (RJ-45 connector). |
| Auxiliary | One auxiliary port (RJ-45 connectors). |
| USB console | In addition to the RJ-45 Console port, the Cisco 1900 ISRs have a USB 5-pin mini Type-B port. When first connecting to this port, a USB driver must be installed. You will be prompted to install the driver. Simply follow the installation prompts to install the driver. |
| USB | Two USB 2.0 Type-A compliant ports;1940 series. One USB 2.0 Type-A compliant port; 1905 and1921.These ports are backward compatible with USB1.1 devices. The USB port provides connection for USB devices such as security tokens and flash memory. |
Removable, Interchangeable, and Optional Modules
Some modules can be installed either by inserting them into slots on the chassis, or by opening the chassis and plugging them into connectors inside. The WLAN is factory installed.
- CompactFlash memory and enhanced high-speed WAN interface cards (EHWICs) fit into slots on the Cisco 1940 series chassis, and can be installed or removed without opening the chassis.
- A connector inside the Cisco 1940 series chassis accommodates an optional field installable Internal Service Module (ISM). See Installing and Upgrading Internal Modules and FRUs in Cisco 1900 Series ISRs.
- The ISM connector inside the Cisco 1941W chassis accommodates an optional factory installed wireless LAN card. The WLAN card is permanently installed in the ISM connector.
- Cisco 1940 series ISRs feature an optional upgrade to the internal power supply providing in-line power (802.3af-compliant Power-over-Ethernet (PoE) and Cisco standard inline power) to optional integrated switch modules. The Cisco 1905, and Cisco 1921 have an external feed for PoE. (See Figure 1-2.)
- There are no user-installable or replaceable modules on the Cisco 1905 or Cisco 1921 routers. The chassis cover should never be removed.
Power off the PoE before installing an EHWIC in the Cisco 1905 and Cisco 1921 ISRs. Table 1-2 summarizes the optional modules:
| | | |
|---|---|---|
| | | |
| 2 | 2 | 1 |
15.Only Advanced Capability CompactFlash (CF) purchased from Cisco operate in Cisco 1900 series ISRs. Legacy CF will not operate in these routers. When legacy CF is inserted, the following error message appears:
WARNING: Unsupported compact flash detected. Use of this card during normal operation can impact and severely degrade performance of the system. Please use supported compact flash cards only.
16.HWICs, WICs, and VWICs (data only) are supported.
17.Non wireless models only.
Memory
Cisco 1900 series routers contain the following types of memory:
- DRAM—Stores the running configuration and routing tables and is used for packet buffering by the network interfaces. Cisco IOS software executes from DRAM memory.
- Boot/NVRAM—Internal flash memory. Stores the bootstrap program (ROM monitor), the configuration register, and the startup configuration.
- Flash memory—External flash memory (1940 series only). Stores the operating system software image.
Table 1-3 summarizes the memory options for Cisco 1900 series routers. The default memory numbers for RAM represent the minimum usable memory. You can install additional RAM in multiples of the default amount, up to the maximum amount on the Cisco 1940 series ISRs. The Cisco 1905 and Cisco 1921 have factory installed, fixed memory modules and no expansion slots.
| | | | |
|---|---|---|---|
| DRAM | Type—Unregistered DIMM (UDIMM) DIMM sizes—512 MB, 1 GB, 2 GB DIMM expansion slots—1 Default onboard memory—512 MB non ECC Maximum memory—2.5 GB Boot or NVRAM—Internal 16-MB flash memory. | Type—DDR2 DIMM expansion slots—0 Default onboard memory—512 MB non ECC effective with Cisco IOS release 15.5(3) M onwards and 256 MB non ECC for older versions. Maximum memory—512 MB18 Boot or NVRAM—Internal 16 MB flash memory. | Type—DDR2 DIMM expansion slots—0 Default onboard memory—512 MB non ECC Maximum memory—512 MB Boot or NVRAM—Internal 16 MB flash memory. |
18.512 MB activation requires memory licensing feature. See the Cisco IOS Software Activation Configuration Guide for details.
LED Indicators
Table 1-4 summarizes the LED indicators that are located in the router bezel or chassis, but not on the interface cards. Not all models have every LED.
| | | | |
|---|---|---|---|
| SYS | Solid green | Solid green indicates normal operation. | Front panel |
| Blinking green | System is booting or is in ROM monitor mode. | ||
| Amber | System error. | ||
| Off | Power is off or system board is faulty. | ||
| ACT | Green | Solid or blinking when any packets are transmitted or received on any WAN or LAN, or when monitoring system activity. | Front panel |
| PoE | Green | PoE is available. | Front panel |
| Amber | Power supply is not supplying PoE power. | ||
| WLAN 2.4GHz (Wireless Models) | Green | On—Radio is connected, SSID19 is configured, signal is being transmitted, and client is associated, but no data is being received or being transmitted. Slow blinking—Radio is connected, SSID is configured, and beacons are being transmitted. Fast blinking—Data is either being received or being transmitted. Off—Radio is shut down, and no SSID is configured. | Front panel |
| WLAN 5GHz (Wireless Models) | Green | On—Radio is connected, SSID is configured, signal is being transmitted, and client is associated, but no data is being received or being transmitted. Slow blinking—Radio is connected, SSID is configured, and beacons are being transmitted. Fast blinking—Data is either being received or being transmitted. Off—Radio is shut down, and no SSID is configured. | Front panel |
| WLAN | Green | On—Wireless link is up. Blinking—Ethernet link is up and data is either being received or being transmitted. Off—Wireless link is down. On—Ethernet link is up, wireless access point is communicating with LWAPP controller. Blinking—Ethernet link is up, wireless access point is not communicating with LWAPP controller. Off—Ethernet link is down. | Front panel |
| ISM/WLAN | Green | Initialized. | Rear panel |
| Amber | Initialized with error. | ||
| Flash (1905 and 1921 only) | Green | Blinking means software is accessing the internal USB Flash (eUSB20) device. | Rear panel |
| Amber | Initialized with error. | ||
| CF 1 | Green | Flash memory is busy. Note Do not remove the CompactFlash memory card when this light is on. | Next to the CF1 slot |
| Amber | Initialized with error. | ||
| Blinking Green then turns off | CompactFlash is ready for removal. Note Remove the CompactFlash when the light turns off. | ||
| CF 0 | Green | Flash memory is busy. Note Do not remove the CompactFlash memory card when this light is on. | Next to the CF0 slot |
| Amber | Initialized with error. | ||
| Blinking Green then turns off | CompactFlash is ready for removal. Note Remove the CompactFlash when the light turns off. | ||
| S (Speed) | 1 blink + pause | GE port operating at 10 Mb/s. | Rear panel |
| 2 blink + pause | GE port operating at 100 Mb/s. | ||
| 3 blink + pause | GE port operating at 1000 Mb/s. | ||
| L (Link) | Green | GE link is established. | Rear panel |
| Off | No GE link is established. | ||
| EN (RJ-45 console port) | Green | The RJ-45 console port is active. | Rear panel, next to the console port |
| EN (USB serial console port) | Green | The USB console port is active. | Rear panel, next to the USB console port |
19.SSID = Service Set Identifier
20.eUSB = embedded USB
Chassis Ventilation
An internal fan provides chassis cooling. An onboard temperature sensor controls the fan speed. The fan is always on when power is applied to the router. Under most conditions, the fan operates at the slowest speed to conserve power and reduce fan noise. It operates at the higher speeds when necessary under conditions of higher ambient temperature. See the "Chassis Airflow Diagram" section.
Real-Time Clock
An internal real-time clock with battery backup provides the system software with time of day on system power up. This allows the system to verify the validity of the certification authority (CA) certificate. The Cisco 1900 series router has a lithium battery. This battery lasts the life of the router under the operating environmental conditions specified for the router, and is not field-replaceable.
Note If the lithium battery in a Cisco 1900 ISR should fail, the router must be returned to Cisco for repair.
Although the battery is not intended to be field-replaceable, the following warning must be heeded:
Warning Dispose of used batteries according to the manufacturer's instructions. Statement 1015
Chassis Security
The chassis of the router is constructed with a KensingtonTM security slot on the back panel. It can be secured to a desktop or other surface by using KensingtonTM lockdown equipment.
Wireless LAN Connectivity
The embedded Wi-Fi CERTIFIED™, 802.11a/b/g/n-compliant wireless access point is preinstalled in the router as an optional feature. The Cisco 1900 routers support both autonomous and unified features and network configurations.
The wireless access point does not have an external console port for connections. To configure the wireless device, you must use a console cable to connect a PC to the host router's console port as described in "Cable Information and Specifications for Cisco 1900 Series Routers," and then use the Cisco IOS command-line interface (CLI) to access the interface.
Table 1-5 describes the radios and antennas for the wireless routers.
| | | | | | |
|---|
21.Actual data rate is highly dependent on your wireless environment.
Baud Reset Button
The Cisco 1905 and Cisco 1921 ISRs have a baud reset button on the back panel. When the button is pressed during power on, ROMMON resets the router to the default console port configuration. If the baud reset button is pressed for longer than 30 seconds, the router defaults to the read-only ROMMON image. The default console port configuration is 9600 baud, 8 data bits, 1 stop bit, no parity, and flow control is set to none.
Interface Numbering
Each individual interface (port) on a Cisco 1900 series router is identified by a number. The Cisco 1900 series routers contains the following wide-area network (WAN) and local-area network (LAN) interface types:
- Two onboard Gigabit Ethernet (GE) LAN interfaces.
- Two slots in which you can install WICs, VWICs (data only), and HWICs. The Cisco 1905 comes with a factory installed EHWIC in the right slot.
The numbering format for the slots is interface-type 0/slot-number / interface-number. Table 1-6 summarizes the interface numbering. See Figure 1-5 to identify the slot numbers.
| | | |
|---|---|---|
| Onboard Ports | 10/100/1000 Ethernet | 0/0 and 0/1 |
| Slot 0 | EHWIC/HWIC/WIC | 0/0/0 to 0/0/0 (single-wide) |
| Slot 1 | EHWIC/WIC/VWIC | 0/1/0 to 0/1/0 (single or double-wide) |
Note On the Cisco 1900 series router, the numbering format for configuring an async interface is 0/slot/port. To configure the line associated with an async interface, simply use the interface number to specify the async line. For example, line 0/0/0 specifies the line associated with interface serial 0/0/0 on a WIC-2A/S in slot 0. Similarly, line 0/1/1 specifies the line associated with interface async 0/1/1 on a WIC-2AM in slot 1.
Specifications
Table 1-7 lists the specifications for Cisco 1905 and Cisco 1921 series routers. Table 1-8 lists the specifications for Cisco 1940 series routers.
| | |
|---|---|
| | |
| Dimensions without rubber feet (H x W x D) | 1.75 in x 13.5 in x 11.5 in (4.4 cm x 34.3 x 29.2 cm), 1 RU23 height |
| Rack-mount 19 in. (48.3 cm) EIA | Optional |
| Weight (no modules installed) | Approximately 12 lbs |
| Weight with PoE | 12.8 lbs |
| Maximum Weight-Fully Configured | 14 lbs |
| | |
| AC input power | |
| 100 to 240 VAC, autoranging |
| 47 to 63 Hz |
| 1.5 to 0.6 A |
| 25 W |
| 60 W |
| 70 W |
| 80 W |
| <50 A |
| | |
| Console | One RJ-45 connector and one USB mini Type B, USB 2.0 compliant. Baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200. |
| Auxiliary ports | RJ-45 connector. Baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200. |
| USB port | One USB Type A, USB 2.0 compliant, 2.5 W (500 mA) max.24 |
| 10/100/1000 Gigabit Ethernet | Two RJ-45 connectors (GE0/GE1), Auto-MDIX25 |
| | |
| Operating humidity | 10 to 85% RH |
| Operating temperature - up to 5906 ft (1800 m) elevation | 32 to 104°F (0 to 40°C) |
| Operating temperature - up to 9843 ft (3000 m) elevation | 32 - 77°F (0 - 25°C) |
| Operating altitude maximum | 10,000 ft (3000 m) |
| | |
| Nonoperating temperature | –40 to 158°F (–40 to 70°C) |
| Nonoperating humidity | 5 to 95% RH |
| Nonoperating altitude | 15,000 ft (4570 m) |
| | |
| Sound Pressure (Typ/Max) | 32.9/58.3 dBA |
| Sound Power (Typ/Max) | 41.9/67.2 dBA |
| | |
| Electromagnetic compatibility (EMC) | 47 CFR, Part 15 For detailed compliance information, see Regulatory Compliance and Safety Information for Cisco 1900 Series Routers. |
| Safety compliance | UL 60950-1 For detailed compliance information, see Regulatory Compliance and Safety Information for Cisco 1900 Series Routers. |
| Telecom | TIA/EIA/IS-968 For detailed compliance information, see Regulatory Compliance and Safety Information for Cisco 1900 Series Routers. |
| | |
|---|---|
| | |
| Dimensions without rubber feet (H x W x D) | 3.5 x 13.5 x 11.5 in. (8.9 x 34.3 x 29.2 cm), 2 RU27 height |
| Rack-mount 19 in. (48.3 cm) EIA | Included |
| Weight (no modules installed) | Approximately 12 lbs |
| Weight with PoE | 12.8 lbs |
| Maximum Weight-Fully Configured | 14.0 lbs |
| | |
| AC input power | |
| 100 to 240 VAC, autoranging |
| 47 to 63 Hz |
| 1.5 to 0.6 A |
| 35 W |
| 110 W |
| 110 W |
| 80 W |
| <50 A |
| Power consumption | 110 W maximum platform only |
| | |
| Console | One RJ-45 connector and one USB mini Type B, USB 2.0 compliant. Baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200. |
| Auxiliary ports | RJ-45 connector. Baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200. |
| USB ports | Two USB Type A, USB 2.0 compliant, 2.5 W (500 mA) max.28 |
| 10/100/1000 Gigabit Ethernet | Two RJ-45 connectors (GE0/GE1), Auto-MDIX29 |
| | |
| Operating humidity | 10 to 85% RH |
| Operating temperature - up to 5906 ft (1800 m) elevation | 32 to 104°F (0 to 40°C) |
| Operating temperature - up to 9843 ft (3000 m) elevation | 32 - 77°F (0 - 25°C) |
| Operating altitude maximum | 10,000 ft (3000 m) |
| | |
| Nonoperating temperature | –40 to 158°F (–40 to 70°C) |
| Nonoperating humidity | 5 to 95% RH |
| Nonoperating altitude | 15,000 ft (4570 m) |
| | |
| Sound Pressure (Typ/Max) | 26/46 dBA |
| Sound Power (Typ/Max) | 36/55 dBA |
| | |
| Electromagnetic compatibility (EMC) | 47 CFR, Part 15 For detailed compliance information, see Regulatory Compliance and Safety Information for Cisco 1900 Series Routers. |
| Safety compliance | UL 60950-1 For detailed compliance information, see Regulatory Compliance and Safety Information for Cisco 1900 Series Routers. |
| Telecom | TIA/EIA/IS-968 For detailed compliance information, see Regulatory Compliance and Safety Information for Cisco 1900 Series Routers. |
Regulatory Compliance
For compliance information, refer to Regulatory Compliance and Safety Information for Cisco 1900 Series Routers.
Source: https://www.cisco.com/c/en/us/td/docs/routers/access/1900/hardware/installation/guide/1900_HIG/19over.html
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