ISR

Cisco's Integrated Services Router (ISR) line of routers consists of the 1800, 2800, and 3800 series routers. These routers are intended to replace tired 1700, 2600, 3600, and 3700 lines by increasing performance while at the same time allowing for tighter and better integration of voice and security.

Architecture

ASIC Controlled Bus

The ISR routers feature an ASIC bus, replacing the PCI bus found in older routers. Please note that unlike ASIC driven switches and routers, the ASIC found in the ISR line of routers is just for bus operation only. Routing functions are still fully handled by the CPU

AIM Slots

Like the 2600 and 3660 and 3700 routers, the ISR routers support up to 2 on-board AIM slots. These AIM slots are internal only and do not have any external connectors. The AIM slots allow for crypto modules, voice resources, or even voice mail.

Onboard DSP

The 2800 and 3800 series ISR routers also include PVDM modules for on-board DSP modules. DSPs are the voice resources needed to terminate POTS or Voice ISDN PRIs, or handle conferencing.

Older routers needed to have either AIM cards or a NM with PVDM slots on-board. ISRs can take VIC and VWICs directly not needed another module for voice resources.

The on-board PVDM slots take PVDM-2 modules

Power

With the overhaul of the bus Cisco has added inline power to all of the modules allowing for 802.3af services off of the router. Although, a larger power supply is usually needed.

USB

The ISR routers were one of the first Cisco devices to have external USB connectors on-board. The USB connectors can be used for flash (copying IOS images, config, etc) or for security credentials using a USB token.

Most ISR routers fearure a USB 1.1 port with the 1811 and 1821 featuring USB 2.0 and the 1801 - 1803 missing an USB port.

Please note that not all USB flash devices will work and Cisco will only support Cisco branded USB sticks. More research will be done to figure out what thrid party sticks will work.

New Modules/WICs

The ISR series of routers not only up internal backplane speeds but offers new card types.

HWIC

The HWIC or 'High-speed' WIC increases the speed of the small form factor WIC from a max of 8Mbps (shared across all slots) up to a dedicated 400Mbit for each HWIC slot. HWIC slots on the router support all previous WIC form factor devices including WIC, VWIC, and VICs and support PoE to the HWIC slot (for HWIC based switch modules).

HWICs will be available in two form-factors, single-wide and double-wide. Double wide slots must be next to each other and will have a removable separator. The HWIC-9ESW is an example of a double-wide HWIC.

NME/NME-X

THE NME slot expands on the NM slot increasing the speed from 400Mbps to 1.0Gbps. In addition to the speed increase NME slots are fully compatable with NM, NME, and EVM modules. Also the NME allows for full 802.3af compatible power ports (older NM based switch modules were pre-802.3af)

The NME comes in 4 form factors. Single-wide, Double-wide, Single-wide extended, and Double-wide extended.

EVM

EVM or Enhanced Voice Module allows for dense voice modules in a NM form factor.

Models

1800 Series

Cisco ISR 1800
Manufacturer:	Cisco Systems
Positioning:	SOHO / Small Branch Router
Throughput:	70-75 kpps
Size:	Desktop
Release Date:	3QCY04

The 1800 series has replaced the 1700 series, unless you require voice (1750v or 1760v) which you will need to consider a 2800 or a 1861. They occupy a small footprint and not rackmountable out of the box, although a rackmount kit can be ordered.

The 1800 series adds additional security services on top of the routing platform with hardware cryptography on-board with an additional AIM slot to increase crypto throughput (1841 only).

The small form factor and hardware crypto makes the 1800 series perfect for a SOHO or small branch office solution.

Model	Performance	Expandability	WAN ports	Ethernet ports	USB Ports	Wireless	Voice Ports
1801	70 kpps 35.85Mbps*	Fixed config	ADSL over POTS ISDN S/T	1 - 10/100 + 8 port built-in managed switch	0	Yes	No
1802	70 kpps 35.85Mbps*	Fixed config	ADSL over ISDN ISDN S/T	1 - 10/100 + 8 port built-in managed switch	0	Yes	No
1803	70 kpps 35.85Mbps*	Fixed config	G.SHDSL ISDN S/T	1 - 10/100 + 8 port built-in managed switch	0	Yes	No
1811	70 kpps 35.85Mbps*	Fixed config	N/A V.92 analog modem	2 - 10/100 + 8 port built-in managed switch	2 USB 2.0	Yes	No
1812	70 kpps 35.85Mbps*	Fixed config	N/A ISDN S/T	2 - 10/100 + 8 port built-in managed switch	2 USB 2.0	Yes	No
1841	75 kpps 38.40Mbps*	2 - HWIC slots, 1 - AIM slot	N/A (use HWIC slots)	2 - 10/100	1 USB 1.1	w/ HWIC-AP card	No
1861	146kpps 74.82Mbps*	1 - HWIC slot	N/A (use HWIC slots)	1 - 10/100 + 8 port built-in managed switch + uplink port	0	w/ HWIC-AP card	4 - FXS, 4 - FXO or, 4 - FXS, 2 - BRI

• Speed calculated using 64 byte packets. 8 bit/byte * 64 * pps. IMIX traffic will be much higher

2800 Series

Cisco ISR 2800 Series
Manufacturer:	Cisco Systems
Positioning:	Branch Office Router
Throughput:	90 - 220 kpps
Size:	1-2 RU
Release Date:	3QCY04

The 2800 series builds upon the 1800 series by not only having on-board cryptography, but also adding on-board voice resources. Designed for a branch office.

Model	Performance	Ethernet Ports	Expandability	On-board DSP Slots	RU
2801	90 kpps 46.08Mbps*	2 - 10/100	2 HWIC/VWIC/WIC/VIC 1 VWIC/WIC/VIC 1 VWIC/VIC (voice only)	2	1 RU
2811	120 kpps 61.44Mbps*	2 - 10/100	4 HWIC 1 NME	2	1 RU
2821	170 kpps 87.04Mbps*	2 - 10/100/1000	4 HWIC 1 NME or NME-X	3	2 RU
2851	220 kpps 112.64Mbps*	2 - 10/100/1000	4 HWIC 1 NME,NMD,NME-X or NME-XD	3	2 RU

3800 Series

Cisco ISR 3800 Series
Manufacturer:	Cisco Systems
Positioning:	Branch Office/ Head office Router
Throughput:	350-500 kpps
Size:	2-3 RU
Release Date:	4QCY04

The 3800 series is designed for large branch offices or head offices. Combining the security and voice features of the 2800 with larger density and higher speeds makes the 3800 series perfect. The 3800 series was designed to replace tired 3600 and 3700 series routers.

Model	Performance	Ethernet Ports	Expandability	On-board DSP Slots	RU
3825	350 kpps 179.20Mbps*	2 - 10/100/1000 (1 port is dual media SFP/copper)	4 HWIC 2 NME(or 1 NMD)	4	2 RU
3845	500 kpps 256.00Mbps*	2 - 10/100/1000 (1 port is dual media SFP/copper)	4 HWIC 4 NME(or 2 NMD)	4	3 RU