Cisco 1921 vs. cisco 1941 vs. cisco 2901. More info...

1. Cisco 1921 vs. Cisco 1941 vs. Cisco 2901
If you wanna buy a Cisco router to set up your network, maybe you are confused
with the detailed functions of these models, such as Cisco 1921, Cisco 1941 and Cisco
2901. Which one would be better for your network setup? For example, if you need
one that support over 10 routing protocol such as OSPF, BGP, EIGRP, PIM-SM, IGMPv3,
static IPv4 routing, static IPv6 routing; an evolutionary platform with multicore CPUs,
etc. the CISCO1941W-E/K9 may be not a bad choice.
So what are the main differences between the following routers: Cisco 2901, Cisco
1941 and Cisco 1921? Here we list the main differences and features of Cisco 1921,
CISCO 1941 and Cisco 2901 in the following table:
Cisco 1921, Cisco 1941 and Cisco 2901 Comparison
CISCO 1921 Cisco 1941/Cisco 1941W Cisco 2901
Form Factor 1 RU 2 RU 1 RU
Integrated WAN Ports
2 Gigabit
Ethernet 2 Gigabit Ethernet
2 Gigabit
Ethernet
Interface slots
(enhanced high-speed
WAN interface card
[EHWIC]) 2 2
4
Interface Slots,
Network Interface
Modules N/A N/A N/A
Service-module slots 0 0
0
Integrated services
module (ISM) slots 0 1 1
Packet-voice
data-module (PVDM)
slots 0 0
2
USB Ports (v2.0) 1 2 2
Default/maximum flash
memory
256 MB/256
MB 256 MB/ 8 GB
256 MB/ 8 GB

2. Default/maximum
synchronous dynamic
RAM (SDRAM)
512 MB/512
MB 512 MB/ 2.5 GB
512 MB/ 2.5 GB
Modular LAN
switchports (with
optional Power over
Ethernet) 9 11
16
Stateful Firewall YES YES YES
Voice and Video DSP
support - -
PVDM3 and
PVDM2
Survivable Remote Site
Telephony (SRST) - -
Up to 35
Cisco Unity Express
(network module [NM],
service module [SM], or
ISM)
- - 10 ports; 100
mailboxes
Digital Voice Support - - Up to 100
If you want to know the more detailed Cisco 1900 router models you can visit the
page:
http://www.router-switch.com/Price-cisco-routers-cisco-router-1900-series_c16
More Cisco 1900 Series Comparison:
Cisco 1921 vs. Cisco 1941 vs. Cisco 1941W