Mushroom Networks Documentation

VPN bonding using VLL connection

Existing IPSec VPN setup can benefit from using VLL (Virtual Leased Line) setup between branch office-head office or branch office-branch office setup, with the following advantages:

  • All ISP lines are utilized creating a bigger pipe for VPN.
  • Failure on any ISP link does not affect the existing VPN session

As an example configuration Mushroom device on WAN1 would be setup in “Passthrough mode”, so no changes would be required on your firewall/router. VLL client and server will be setup between the 2 sites. IPSec traffic originating from one site and destined for the remote site goes through VLL tunnel (which would utilize the aggregated bandwidth of all WAN Links). Additionally a secondary VPN link can still exist on your Firewall using one of the IP from the secondary ISPs (e.g ISP 3 in the following setup) for additional failover setup that can bypass Mushroom device.

VLL client server setup

BBNA devices enabled with the VLL feature can be paired with another BBNA device using Virtual Leased Line tunnel (VLL). For each VLL tunnel, there is an associated “client”, and a “server” setup.  Traffic is forwarded along the VLL tunnel from the client device to the server device and vice versa, i.e. it is a bi-directional data tunnel for IP packets. An example Pasthrough setup for VPN bonding is as follows, you may also have the client in Passthrough mode similar to the server setup:

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