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VPN Site-to-Site networking

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Contents

VPN without normal Internet traffic

This Site-to-Site networking scenario lets enterprises to use:

  • HiPath 2000 as Site-to-Site VPN gateway both for Voice and Data traffic.
  • HiPath 2000 as a cost-effective gateway to route VoIP traffic by performing SIP and CorNet-IP IP trunking between sites over VPN trunk.
  • HiPath 2000 as gateway to access enterprise resources and applications available on the company’s VPN networked sites.

Overview

HiPath 2000 VPN Site-to-Site networking scenario without normal Internet traffic

Important informations

  • Basic bandwidth reservation for Voice can be implemented on HiPath 2000 setting:
    • Outgoing Bandwidth Control.
    • B-Channels limitation.
  • No external Firewall is required at site (HiPath 2000 features firewalling service).
  • If, at some point, normal Internet traffic (like Web navigation, Mail server access, etc.) is required by the Customer, then Hipath 2000 VPN Site-to-Site networking implementation must be designed according to VPN with normal Internet traffic scenario. In that case:
    • Customer need to ensure itself with additional ISP connection to Internet.
    • Customer need to ensure additional devices/services like:
      • Router, necessary to route LAN hosts normal traffic to Internet.
      • Firewall, necessary to protect LAN hosts and implement DMZ at site.
      • Proxy, necessary to implement Internet traffic policies.

VPN with normal Internet traffic

Overview

VPN Site-to-Site networking with normal Internet traffic Overview here

Important informations

  • Normal Internet traffic completely separated from Voice traffic by means of second Internet connection to ISP:
    • Voice quality over VPN is preserved from normal Internet traffic side effects (No Voice/Date traffic congestion, no burstly data traffic or high downstream can jam Voice connections).
    • HiPath 2000 can manage VPN Bandwidth entirely (No Bandwith share with normal Internet traffic).
    • HiPath 2000 lightweight processing power requirements handling and routing only Voice traffic over VPN Trunk.
  • Routing/Security policies demanded to external Proxy/Firewall devices for normal unencrypted Internet traffic handling.

VPN with normal Internet traffic and QoS support

Overview

VPN Site-to-Site networking with normal Internet traffic and QoS support Overview here

Important informations

  • The ISP must support QoS to ensure sufficient voice packet quality (According to specific SLA)
  • HiPath 2000 as VPN Site-to-Site gateway to a single ISP access, used for both:
    • Voice and Data traffic.
    • Normal Internet traffic.
  • HiPath 2000 as a cost-effective gateway to route:
    • VoIP traffic by performing CorNet-IP trunking between sites over VPN trunk.
    • normal Internet traffic to ISP.
    • traffic to DMZ at site.
  • External additional Proxy/Firewall:
    • must be capable to handle traffic carried by VPN transparently.
    • offer high level of Security for normal unencrypted Internet traffic
  • HiPath 2000 as gateway to access enterprise resources and applications available on the company’s VPN networked sites.
  • The ISP access can be overloaded (Available bandwidth could be used by massive or bursty downloads) affecting Voice quality first (Bursty data traffic, high downstream can jam Voice connections).
  • Operation of public servers on (DMZ) is only recommended QoS can be provided by ISP and access Router is able to support bandwidth control for both Voice and Data traffic.
  • Not all ISPs are able nor have a suitable infrastructure ready to offer adequate/any QoS features on their Internet access.