Cisco 837

Cisco 837

Cisco 837 is a router manufactured by Cisco Systems intended for SOHO network use. The device is typically used as an internet router via its ADSL WAN port. It also incorporates an integrated 4-port Ethernet 10/100 Mbps switch for local device connectivity.

The Cisco 837 runs a Cisco IOS operating system and supports firewall, NAT (Network address translation) / PAT (Port address translation). The device also provides support for the use of multiple public IP addresses on its external WAN port.

The device is also capable of acting as an IPSEC VPN gateway for remote connectivty. Cisco Systems provide a VPN client to use with this device and many other of its Cisco VPN capable products. The 837 differs from the 827 as it features hardware acceleration of Triple DES encryption, enhancing VPN performance. The 827 was available as a SOHO 7x and the 837 was available in some regions as a SOHO 9x, where x is 1 for Ethernet, 6 for ADSL over ISDN, or 7 for ADSL over POTS. [1]

This router is no longer supplied by Cisco.

Contents

Specification

Physical

  • Device type – router + 4 port switch (integrated)
  • Form factor – external
  • Dimensions (WxDxH) – 24.6 cm x 21.6 cm x 5.1cm
  • Weight – 0.7kg
  • CPU – Motorola, MPC857DSL running at 66MHz
  • RAM – 32MB installed in original model, 64MB in later models. Max is 80MB. Expansion using onboard DIMM-socket.
  • Flash memory – 12MB (installed) / 24MB (max). (8MB / 16MB for early revisions) Expansion using onboard StrataFlash-socket.
  • Digital signaling protocol – ADSL1
  • ADSL chipset - ST-Micro DynaMiTe 20150 (former Alcatel Micro Electronics)

Software and features

  • Routing protocol – IGRP, RIP-2, GRE
  • Data link protocol – Ethernet, FastEthernet
  • Network/transport protocol – TCP/IP, PPtP, IPSec, PPPoE, PPPoA
  • Remote management protocol – SNMP, telnet, HTTP, SSH
  • IOS firewall
  • NAT/PAT

Popular uses and applications

  • Providing VPN access for remote users / teleworkers
  • Internet gateway

References

  1. ^ "Cisco SOHO 90". Cisco.com. http://www.cisco.com/en/US/products/hw/routers/ps4866/index.html. Retrieved 16 October 2009. 
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