The Cisco 1921 and 1941 routers reached EOL back in 2011, but we still receive calls on these on an almost weekly basis.
Some of the calls are for clarifications on the differences between them, so we put this chart together to help with that.
This information is available elsewhere online, but this chart has most of the similarities removed to make it easier to read.
Of course, if you have any questions, our Cisco experts would love to hear from you at 855-932-6627 or cisco@maximummidrange.com

Also, in this article:
http://www.maximummidrange.com/blog/cisco-1921-series-routers/2386
We said that “Clients are looking for WAN Interface Cards and complete units for expansion and replacements”, on the 1921 and 1941 routers which is still the case.
However, we currently have new factory sealed units of these items:
– CISCO1921-K9
– CISCO1941-K9
– CISCO1941-SEC-K9

Pricing on these will be in an upcoming blog, but a quick no-hassle phone call will also get current pricing.


Cisco 1921 - 1941 Comparison

Column1Cisco 1921 RouterCisco 1941 RouterCisco 1941W Wireless Router
Form Factor Desktop or rack-mount - 1U Desktop or rack-mount - 2U Desktop or rack-mount - 2U
Connectivity Wired Wired Wireless, wired
Data Link Protocols Ethernet, Fast Ethernet, Gigabit Ethernet Ethernet, Fast Ethernet, Gigabit Ethernet Ethernet, Fast Ethernet, Gigabit Ethernet, IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.11n (draft 2.0)
Network Protocols IPSec, L2TPv3 IPSec, PPPoE, L2TPv3 IPSec, PPPoE, L2TPv3
Routing Protocols OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, static IP routing, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-based routing (PBR), MPLS OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-based routing (PBR), MPLS, Bidirectional Forwarding Detection (BFD), IPv4-to-IPv6 Multicast OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-based routing (PBR), MPLS, Bidirectional Forwarding Detection (BFD), IPv4-to-IPv6 Multicast
Remote Management SNMP, RMON SNMP, RMON SNMP, RMON
Encryption Algorithm None SSL LEAP, MD5, TLS, PEAP, TKIP, WPA, WPA2
Authentication Method None None RADIUS, Extensible Authentication Protocol (EAP), EAP-FAST
Features Firewall protection, VPN support, MPLS support, VLAN support, Syslog support, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Quality of Service (QoS), Web Services Management Agent (WSMA), TR-069 Agent, Ne Firewall protection, VPN support, MPLS support, Syslog support, content filtering, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Dynamic Multipoint VPN (DMVPN), Web Services Management Agent (WSMA), NetFl Firewall protection, hardware encryption, VPN support, MPLS support, Syslog support, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED)
Compliant Standards IEEE 802.1Q, IEEE 802.3ah, IEEE 802.1ah, IEEE 802.1ag IEEE 802.3, IEEE 802.1Q, IEEE 802.3af, IEEE 802.3ah, IEEE 802.1ah, IEEE 802.1ag, ANSI T1.101, ITU-T G.823, ITU-T G.824 IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.3ah, IEEE 802.1ah, IEEE 802.1ag, IEEE 802.11n (draft 2.0)
Installed RAM 512 MB 512 MB 512 MB
Maximum RAM 512 MB 2 GB 2 GB
Installed Flash Memory 256 MB 256 MB 256 MB
Maximum Flash Memory 256 MB 8 GB 8 GB
Status Indicators None Link activity, power Link activity, power
Interfaces 2 x 10Base-T/100Base-TX/1000Base-T - RJ-45 ¦ Serial : 1 x console ¦ Management : 1 x console - mini-USB Type B ¦ Serial : 1 x auxiliary ¦ Hi-Speed USB : 1 x 4 pin USB Type A 2 x 10Base-T/100Base-TX/1000Base-T - RJ-45 ¦ Management : 1 x console - RJ-45 ¦ Management : 1 x console - mini-USB Type B ¦ Serial : 1 x auxiliary - RJ-45 ¦ USB : 2 x 4 pin USB Type A 2 x 10Base-T/100Base-TX/1000Base-T - RJ-45 ¦ Management : 1 x console - RJ-45 ¦ Management : 1 x console - mini-USB Type B ¦ Serial : 1 x auxiliary - RJ-45 ¦ USB : 2 x 4 pin USB Type A
Expansion Slots 2 (total) / 2 (free) x EHWIC 2 (total) / 2 (free) x EHWIC ¦ 2 (total) / 1 (free) x CompactFlash Card ¦ 1 (total) / 1 (free) x ISM 2 (total) / 2 (free) x EHWIC ¦ 2 (total) / 1 (free) x CompactFlash Card
Antenna None None External detachable
Antenna Qty None None 3
Directivity None None Omni-directional
Gain Level None None 2 dBi
Power Device Power supply - internal Same Same
Voltage Required AC 120/230 V ( 50/60 Hz ) Same Same
Compliant Standards VCCI, CISPR 22 Class A, CISPR 24, EN 61000-3-2, EN55024, EN55022 Class A, EN50082-1, AS/NZS 60950-1, CAN/CSA-E60065-00, ICES-003 Class A, CS-03, FCC CFR47 Part 15, EN300-386, UL 60950-1, IEC 60950-1, EN 60950-1, BSMI CNS 13438, CSA C22.2 No. 60950-1, AS/N CISPR 22 Class A, CISPR 24, EN55024, EN55022 Class A, EN50082-1, AS/NZS 60950-1, ICES-003 Class A, CS-03, R&TTE, FCC CFR47 Part 15, EN300-386, UL 60950-1, IEC 60950-1, EN 60950-1, BSMI CNS 13438, AS/NZS 3548 Class A, CAN/CSA C22.2 No. 60950-1, VCCI V-3, E CISPR 22 Class A, CISPR 24, EN55024, EN55022 Class A, EN50082-1, CAN/CSA-E60065-00, ICES-003 Class A, CS-03, AS/NZS 3548, FCC CFR47 Part 15, EN300-386, UL 60950-1, IEC 60950-1, EN 60950-1, CSA C22.2 No. 60065, BSMI CNS 13438
Operating System Cisco IOS Security Cisco IOS IP Base Cisco IOS IP Base



Comparison: Cisco 1921, Cisco 1941, Cisco 1941W Routers

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