What are the physical and operational specifications of the VPN Router 251?

The specifications of the VPN Router 251 are as follows:

Feature

Specifications

Interfaces

  • 4-port 10/100 Mbps Ethernet switch
  • ADSL – G.992.1 Annex A, Annex B or U-R2
  • Console port (RS-232, DB-9f)

Physical size

  • Length: 9.1" (230 mm)
  • Width: 6.3" (161 mm)
  • Height: 2.1" (53 mm)
  • Weight: 1.0 lbs. (468 grams)

IPsec performance

4.5 Mbps for 3DES

ADSL compliance

  • ITU G.992.1 (G.DMT)
  • G.992.1 Annex A – ADSL over POTS
  • ITU G.992.2 (G.Lite)
  • RADSL – ANSI T1.413 Issue 2
  • DSL Forum document TR-042 ATM
  • Transport over ADSL
  • G.hs 994.1
  • G.ploam G.997.1
  • Auto negotiation rate adaptation
  • RFC 2364 – PPP over AAL5
  • RFC 2684 – MPoA; both bridged and routed encapsulation
  • British Telecom SIN 329; BT Broadband IP Product requirements for End User NTE equipment
  • RFC 2516 – PPPoE
  • Traffic shaping UBR, CBR
  • ATM Forum UNI 3.1/4.0 PVC
 

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