SETUP
Page 32
DOC_DEV_XS_Setup guide_C
8
Loop VPN
When the SHDSL network forms a daisy chain (i.e. a linear topology), and when it is not possible to form a
secure ring, the "loop VPN" function allows for network redundancy if a public WAN connection (Internet) or
private (MPLS) is available at each end of the SHDSL network.
The 2 XS switches at the end of the network establish a VPN over the WAN. The VPN provides connectivity at
the Ethernet level. Thus by activating the RSTP protocol redundancy may be provided thanks to that VPN.
One XS must be configured as a VPN server mode and must be accessible via a fixed IP address across the
WAN. The other XS must be configured as a VPN client.
The VPN is established on the Ethernet LAN1 port of the XS switch and that port becomes a "WAN" port with
its own IP address. This Ethernet port must be connected to the WAN access router and therefore cannot be
used to connect other equipments which are reachable through the SHDSL link.
Setting up the VPN
•
In the menu, choose
Setup > IP Protocol and routing > Loop VPN
.
•
Tick the
Enable the VPN
checkbox.
LAN1
RSTP
LAN1
Router
Router
VPN
IP network
Internet
Содержание XLAN+ Series
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