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Cisco 1721 Modular Access Router - Router - DSL - EN, Fast EN - Cisco IOS at Backoffice
Cisco 1721 Modular Access Router - Router - DSL - EN, Fast EN - Cisco IOS
CISCO1721-ADSL-DG
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This product is no longer available.
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The enhanced Cisco 1721 Modular Access Router is designed to help organizations embrace the productivity benefits of e-business applications. The Cisco 1721 router enables e-business by delivering secure Internet, intranet, and extranet access with virtual private networks (VPNs) and firewall technology. The Cisco 1721 offers higher performance, additional functionality, and increased memory capacity over the Cisco 1720. In addition, the Cisco 1721 supports standards-based IEEE 802.1Q VLAN routing, which enables enterprises to set up multiple VLANs and route between them for added security within the internal corporate network. Powered by Cisco IOS Software, the Cisco 1721 router provides a cost-effective solution for small and medium businesses and enterprise small branch offices to support e-business applications through a comprehensive feature set in a compact design.| Product Description | Cisco 1721 Modular Access Router - router | | Device Type | Router | | Form Factor | External - modular | | Dimensions (WxDxH) | 28.4 cm x 22.1 cm x 7.9 cm | | RAM | 64 MB | | Flash Memory | 32 MB | | Routing Protocol | OSPF, NHRP | | Data Link Protocol | Ethernet, Fast Ethernet | | Network / Transport Protocol | TCP/IP, L2TP, IPSec, L2F, AAL5 | | Remote Management Protocol | SNMP, RMON | | Digital Signaling Protocol | ADSL | | Features | Cisco IOS , full duplex capability, firewall protection, auto-sensing per device, NAT support, VPN support, auto-negotiation, VLAN support, traffic shaping, Stateful Packet Inspection (SPI), manageable | | Compliant Standards | IEEE 802.3, IEEE 802.3u, IEEE 802.1Q | | Power | AC 120/230 V ( 50/60 Hz ) |
GENERAL |
| Device Type | Router |
| Form Factor | External - modular |
| Installed Modules Qty (Max) | 1 (installed) / 3 (max) |
| Width | 28.4 cm |
| Depth | 22.1 cm |
| Height | 7.9 cm |
MEMORY |
| RAM | 64 MB |
| Flash Memory | 32 MB |
NETWORKING |
| Connectivity Technology | Wired |
| Framing Format | ANSI T1.413 |
| Data Link Protocol | Ethernet, Fast Ethernet |
| Network / Transport Protocol | TCP/IP, L2TP, IPSec, L2F, AAL5 |
| Routing Protocol | OSPF, NHRP |
| Remote Management Protocol | SNMP, RMON |
| Communication Mode | Half-duplex, full-duplex |
| Status Indicators | Link activity, collision status, power, status |
| Features | Full duplex capability, firewall protection, auto-sensing per device, NAT support, VPN support, auto-negotiation, VLAN support, traffic shaping, Stateful Packet Inspection (SPI), manageable |
| Compliant Standards | IEEE 802.3, IEEE 802.3u, IEEE 802.1Q |
COMMUNICATIONS |
| Type | DSL modem |
| Digital Signaling Protocol | ADSL |
| Protocols & Specifications | ITU G.992.1 (G.DMT) |
EXPANSION / CONNECTIVITY |
| Expansion Slots Total (Free) | 3 ( 2 ) x Expansion Slot |
| Interfaces | 1 x modem - ADSL - RJ-11 ( WAN )
1 x network - Ethernet 10Base-T/100Base-TX - RJ-45
1 x serial - auxiliary - RJ-45
1 x management - console - RJ-45 |
MISCELLANEOUS |
| Authentication Method | RADIUS, PAP, CHAP, TACACS+ |
| Compliant Standards | FCC Class B certified, CSA, CISPR 22 Class B, EN 60950, EN55022, UL 1950, VCCI-II |
POWER |
| Power Device | Power adapter - external |
| Voltage Required | AC 120/230 V ( 50/60 Hz ) |
| Power Consumption Operational | 20 Watt |
SOFTWARE / SYSTEM REQUIREMENTS |
| OS Provided | Cisco IOS |
| Software Included | Drivers & Utilities, Cisco IOS IP |
ENVIRONMENTAL PARAMETERS |
| Min Operating Temperature | 0 °C |
| Max Operating Temperature | 40 °C |
| Humidity Range Operating | 10 - 85% |
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