Cisco 2821 - Integrated Services Router Unified Communications... Installation guide

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Overview of Cisco 2800 Series Routers
The Cisco 2800 series of integrated services routers offers secure, wire-speed delivery of concurrent
data, voice, and video services. The modular design of the Cisco 2800 series routers provides maximum
flexibility, allowing you to configure your router to meet evolving needs. The Cisco 2800 series routers
incorporate data, security, and voice services in a single system for fast, scalable delivery of crucial
business applications. The routers offer features such as hardware-based VPN encryption acceleration,
intrusion-protection and firewall functions, and optional integrated call processing and voice mail. The
routers offer a wide variety of network modules and interfaces, voice digital signal processor (DSP)
slots, high-density interfaces for a wide range of connectivity requirements, and sufficient performance
and slot density for future network expansion requirements and advanced applications.
The Cisco 2800 series consists of four versions. The Cisco 2801 routers and Cisco 2811 routers are one
rack unit in height and have two 10/100 LAN ports. The more powerful Cisco 2821 routers and
Cisco 2851 routers are two rack units in height and have two 10/100/1000 LAN ports. The higher-end
router platforms of the Cisco 2800 series offer increased performance, increased slot density including
network module slots ad extension voice module slots and increased inline power output.
Figure 1, Figure 2, and Figure 3 show front views of the Cisco 2800 series routers.
Figure 1 Front View of a Cisco 2801 Router
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Hardware Features
Figure 2 Front View of a Cisco 2811 Router
Figure 3 Front View of a Cisco 2821 or Cisco 2851 Router
This chapter describes the features and specifications of the routers and includes the following sections:
•Hardware Features, page 2
•Chassis Views, page 11
•Interface Numbering, page 16
•Specifications, page 18
•Regulatory Compliance, page 25
Hardware Features
This section describes the basic features of Cisco 2800 series routers, including product identification,
built-in interfaces, modules, memory, LED indicators, chassis ventilation, and the internal clock.
Product Serial Number Location
The serial number label for Cisco 2801 routers is located on the rear of the chassis, along the bottom
edge near the lower left corner. (See Figure 4.)
95902
Do Not Remove During Network Operation
COMPACT FLASH
CONSOLE OPTIONAL RPS INPUT
12V 11A
AUX
SYS
PWR
AUX/
PWR
SYS
ACT CF
-48V 4A
100-240 V~ 4A
50/60 Hz
0
1
95903
Do Not Remove During Network Operation
COMPACT FLASH
CONSOLE
AUX
SYS
PWR
AUX/
PWR
SYS
ACT CF
0
1
OPTIONALRPSINPUT
12V11A
-48V4A
100-240 V~ 4A
50/60 Hz

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Figure 4 Serial Number Location on the Cisco 2801 Router
Note The serial number for Cisco 2801 routers is 11 characters long.
The serial number label for Cisco 2811 routers is located on the rear of the chassis, near the top right
corner, to the left of the CLEI label. (See Figure 5.)
Figure 5 Serial Number Location on the Cisco 2811 Router
Note The serial number for Cisco 2811 routers is 11 characters long.
117342 781-00286-01
SN: AAANNNNXXXX
SN: AAANNNNXXXX
103962 781-00287-01
A=ACT
FE0/1
PVDM1PVDM0AIM1AIM0
FE0/0
S=SPEED
A=FDX
A=LINK
A
F
S
L
A
F
S
L
S
L
O
T
2
S
L
O
T
0
S
L
O
T
3
S
L
O
T
1
ENM0
SN: AAANNNNXXXX

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The serial number label for Cisco 2821 and Cisco 2851 routers is located on the rear of the chassis, near
the top right corner, below the CLEI label. (See Figure 6.)
Figure 6 Serial Number Location on the Cisco 2821 and Cisco 2851 Routers
Note The serial number for Cisco 2821 and Cisco 2851 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 1 summarizes the interface ports built into the chassis.
103963 781-00288-01
A= ACT
FE 0/1
PVDM2 PVDM1 PVDM0 AIM1 AIM0
FE 0/0
S= SPEED
A= FDX
A= LINK
A
F
S
L
A
F
S
L
SN: AAANNNNXXXX
SN: AAANNNNXXXX
Table 1 Summary of Cisco 2800 Series Built-In Interfaces
Model
100BASE-T Fast Ethernet (FE)
Ports (RJ-45)
1000BASE-T Gigabit
Ethernet (GE) Ports (RJ-45)
Universal Serial
Bus (USB) Ports
Console Port
(RJ-45)
Auxiliary Port
(RJ-45)
Cisco 2801 2 — 1 1 1
Cisco 2811 2 — 2 1 1
Cisco 2821 — 2 2 1 1
Cisco 2851 — 2 2 1 1

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Removable and Interchangeable Modules
Table 2 summarizes the optional modules that can be installed in the router to provide specific
capabilities. The network modules, extension voice modules, and interface cards fit into slots, located
on the front of the chassis on the Cisco 2801 router, and on the rear of the chassis on the Cisco 2811,
Cisco 2821, and Cisco 2851 routers; they can be removed and installed without opening the chassis.
Advanced integration modules (AIMs), expansion DRAM memory modules (DIMMs), and packet voice
data modules (PVDMs) plug into connectors inside the chassis; they can be removed and installed only
by opening the chassis.
Table 2 Summary of Cisco 2800 Series Removable and Interchangeable Modules
Router Model
External Modules (In chassis slots) Internal Modules
Network Modules High-Speed WAN
Interface Cards (HWICs)
ExtensionVoice
Modules
(EVMs)
Advanced
Integration
Modules (AIMs)
Packet Voice
Data Modules
(PVDMs)1
1. Cisco 2800 series routers use PVDM II modules that are not compatible with Cisco 2600 series routers.
Cisco 2801 — 2 single-wide (HWIC) or
2 double-wide (HWIC-D)
1 WIC/VWIC/VIC slot
1 VWIC/VIC (voice-only)
—22
Cisco 2811 1 network module (NM) or
1 network module enhanced
(NME)
4 single-wide (HWIC) or
2 double-wide (HWIC-D)
—22
Cisco 2821 1 network module (NM) or
1 network module enhanced
(NME) or
1 network module enhanced
extended (NME-X)
4 single-wide (HWIC) or
2 double-wide (HWIC-D)
123
Cisco 2851 1 network module (NM) or
1 network module enhanced
(NME) or
1 network module enhanced
extended (NME-X) or
1 network module
double-wide (NMD) or
1 network module enhanced
extended double-wide
(NME-XD)
4 single-wide (HWIC) or
2 double-wide (HWIC-D)
123

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Memory
Cisco 2800 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. Stores the operating system software image.
Table 3 summarizes the memory options for Cisco 2800 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.
Table 3 Router Memory Specifications
Router
Platform DRAM Boot/NVRAM Flash Memory
Cisco 2801 Type—SDRAM DIMM
DIMM sizes—64 MB, 128 MB, 256 MB
DIMM expansion slots—11
Default onboard memory—128 MB
Maximum memory—384 MB
1. Cisco 2801 routers have 128 MB of SDRAM soldered onto the system board. You can install a DIMM into the expansion slot
to increase memory to the maximum of 384 MB.
Internal 4-MB
flash memory
External CompactFlash
memory cards of the
following optional
sizes:
•64 MB (default)
•128 MB
Cisco 2811 Type—ECC DDR (error-correcting code,
double data rate) SDRAM DIMM
DIMM sizes—256 MB, 512 MB
DIMM slots—2
Default onboard memory— none
Default memory—256 MB
Maximum memory—768 MB2
2. Cisco 2811 routers can accept one 256 MB and one 512 MB DIMM to provide 768 MB of usable memory.
Internal 2-MB
flash memory
External CompactFlash
memory cards of the
following optional
sizes:
•64 MB (default)
•128 MB
•256 MB
Cisco 2821 Type—ECC DDR (error-correcting code,
double data rate) DRAM DIMM
DIMM sizes—256 MB, 512 MB
DIMM slots—2
Default onboard memory— none
Default memory—256 MB
Maximum memory—1024 MB3
3. Cisco 2851 routers can accept two 512 MB DIMMs to provide 1024 MB of usable memory.
Cisco 2851

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Power
Table 4 summarizes the power options for Cisco 2800 series routers. Cisco 2801 routers are equipped
for operation using AC power only. Cisco 2811, Cisco 2821, and Cisco 2851 routers can be equipped for
operation using either AC or DC input power by installation of the appropriate chassis power supply. IP
phone power is supported if the appropriate AC-input chassis power supply is installed.
LED Indicators
Table 5 and Table 6 summarize the LED indicators that are located in the router bezel or chassis, but not
in removable modules or interface cards.
Table 4 Summary of Cisco 2800 Series Power Options
Router Model Power Option Input IP Phone Power Output
Cisco 2801 AC input without IP phone power
output
100 - 240 VAC, 2 A None
AC input with IP phone power
output
100 - 240 VAC, 5 A –48 VDC, 120 W
Cisco 2811 AC input without IP phone power
output
100 - 240 VAC, 2 A None
AC input with IP phone power
output
100 - 240 VAC, 4 A –48 VDC, 160 W
DC input without IP phone power
output
24 - 60 VDC, 8 A None
Cisco 2821 AC input without IP phone power
output
100 - 240 VAC, 3 A None
AC input with IP phone power
output
100 - 240 VAC, 8 A –48 VDC, 240 W
DC input without IP phone power
output
24 - 60 VDC, 12 A None
Cisco 2851 AC input without IP phone power
output
100 - 240 VAC, 3 A None
AC input with IP phone power
output
100 - 240 VAC, 8 A –48 VDC, 360 W
DC input without IP phone power
output
24 - 60 VDC, 12 A None
Cisco 2811,
Cisco 2821, and
Cisco 2851
Backup power for AC- or
DC-powered routers:
Cisco Redundant Power System
(RPS-675)
100 VAC, 10 A,
or 240 VAC, 6 A
The Cisco RPS provides IP phone power
only if the chassis power supply supports
IP phone power.
With Cisco 2811: –48 VDC, 160 W
With Cisco 2821: –48 VDC, 240 W
With Cisco 2851: –48 VDC, 360 W

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To see descriptions of LEDs in removable modules and interface cards, refer to the applicable
documentation for those products: the Cisco Network Modules Hardware Installation Guide or the Cisco
Interface Cards Installation Guide.
For LED troubleshooting information, including possible trouble causes and corrective actions, see
Table 1 in the “Troubleshooting Cisco 2800 Series Routers” document.
Table 5 Summary of Cisco 2801 Series LED Indicators
LED Color Description Location
SYS PWR Green Router has successfully booted up and the
software is functional. This LED blinks while
booting or in the ROM monitor.
Front
SYS ACT Green Blinking when any packets are transmitted or received
on any WAN or LAN or system is monitoring internal
activities.
Front
CF Green On when flash memory is busy. Do not
remove the CompactFlash memory card when this
light is on.
Front
AUX/PWR Green/
Amber
Indicates that the inline power supply is present
(LED is on). When the inline power supply is not
installed, the LED is off. If the power supply is
working properly, the LED is green. If the
power supply is not working properly, the LED
is amber, indicating an inline power failure.
Front
FE 0 Link Green On when the router is correctly connected to a
local Ethernet LAN through Ethernet port 0.
Front
FE 0 100 Green On indicates a 100-Mbps link.
Off indicates a 10-Mbps link.
Front
FE 0 FDX Green On indicates full-duplex operation.
Off indicates half-duplex operation.
Front
FE 1 Link Green On when the router is correctly connected to a
local Ethernet LAN through Ethernet port 1.
Front
FE 1 100 Green On indicates a 100-Mbps link.
Off indicates a 10-Mbps link.
Front
FE 1 FDX Green On indicates full-duplex operation.
Off indicates half-duplex operation.
Front
AIM 0 Green On indicates presence of an advanced integration
module (AIM) in AIM slot 0.
Front
AIM 1 Green On indicates presence of an AIM in AIM slot 1. Front
PVDM 0 Green On indicates presence of a packet voice data
module (PVDM) in PVDM slot 0.
Front
PVDM 1 Green On indicates presence of a PVDM in PVDM slot 1. Front

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Table 6 Summary of Cisco 2811, Cisco 2821, and Cisco 2851 Series LED Indicators
LED Location LED Label
LED Color or
State Meaning
Front of chassis SYS
PWR
Solid green System is operating normally
Blinking green System is booting or is in ROM monitor mode
Amber System error
Off Power is off or system board is faulty
AUX/
PWR
Green IP phone power operating normally (if installed), or
Cisco Redundant Power System (RPS) operating normally (if
installed)
Amber IP phone power fault (if installed), or
Cisco Redundant Power System (RPS) fault (if installed)
Off IP phone power and Cisco RPS are not installed
SYS
ACT
Blinking green
or solid green
Packet transfers are occurring
Off No packet transfers are occurring
CF Green Flash memory is being accessed; do not eject the CompactFlash
memory card
Off Flash memory is not being accessed; okay to eject the CompactFlash
memory card
Rear of chassis A (=ACT) Blinking green
or solid green
Packet activity in FE or GE port
Off No packet activity in FE or GE port
F (=FDX) Green FE or GE port is operating in full-duplex mode
Off FE or GE port is operating in half-duplex mode
S (= Speed)1
1. The Ethernet S (Speed) LED blinks only when the L (Link) LED is on.
1 blink + pause FE or GE port operating at 10 Mbps
2 blinks + pause FE or GE port operating at 100 Mbps
3 blinks + pause GE port operating at 1000 Mbps (Cisco 2821 and Cisco 2851 only)
L (= Link) Green FE or GE link is established
Off No FE or GE link is established
PVDM0
PVDM1
PVDM22
2. The PVDM2 LED is applicable only to the Cisco 2821 and Cisco 2851 routers.
Green PVDM in slot (0, 1, or 2) is initialized
Amber PVDM in slot (0, 1, or 2) is detected but not initialized
Off No PVDM installed in slot (0, 1, or 2)
AIM0
AIM1
Green AIM in slot (0 or 1) is initialized
Amber AIM in slot (0 or 1) has initialization error
Off No AIM installed in slot (0 or 1)

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Chassis Ventilation
Internal multispeed fans provide chassis cooling, controlled by an onboard temperature sensor.
The Cisco 2801 router has two fans. The Cisco 2801 router with inline power includes two additional
fans integrated with the inline power supply, for a total of four fans. The Cisco 2801 internal fans operate
at three different speeds, running at the slower speeds to conserve power and reduce fan noise at ambient
temperatures below 40oC. They operate at the highest speed in ambient temperatures above 40oC.
The Cisco 2811 router has three fans that operate at a slower speed to conserve power and reduce fan
noise at ambient temperatures below 32oC. They operate at high speed in ambient temperatures above
32oC.
The Cisco 2821 and Cisco 2851 routers have three fans that operate at a slower speed to conserve power
and reduce fan noise at ambient temperatures below 40oC. They operate at high speed in ambient
temperatures above 40oC.
Caution Ensure the device is not installed in close proximity to other devices which could lead to excessive
pre-heating of air at the air intake of the router.
Caution Your chassis installation must allow unrestricted airflow for chassis cooling.
Cisco 2800 Series Router Installation and Preventive Maintenance
Periodic inspection and cleaning of the external surface of the router is recommended to minimize the
negative impact of environmental dust or debris on the router performance. The frequency of inspection
and cleaning is dependent upon the severity of the environmental conditions. Cleaning involves
vacuuming of router air intake and exhaust vents.
Caution Fans are dynamic Electro-Mechanical devices. As such, fans can fail for various electronic reasons, and
will eventually fail due to mechanical wear-out. Sites with ambient temperatures consistently above 25
degree C and with potentially high levels of dust or debris may require fan servicing.
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. In
the Cisco 2811, Cisco 2821, and Cisco 2851 routers, the clock and battery are permanently installed; the
battery lasts the life of the router under the operating environmental conditions specified for the router.
The Cisco 2801 router has a socketed 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 2801 router 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: