Layer-2-Tunnel - ABB EDS500 Series Function Manual

Layer-2-Tunnel

2-Wire Cu
DSL 1
SHDSL-Interface
Backup group 1
Figure 17: Example application backup-group 1:
Grouping dsl1 and fo1
Commands to configure the backup-group
< s e t i n t e r f a c e { b a c k u p - g r o u p . . . } [ n o ] { . . . } >
< s h o w i n t e r f a c e { . . . } >
If equivalent interfaces belong to a Backup-group (e.g. fo1 and fo2) then on both sides the
interfaces with the same name have to be connected (e.g. side A fo1 with side B fo1 and
side A fo2 with side B fo2).
As the switch-over is triggered by the link state, Link Fault Pass-Through (LFPT) has to be
activated if a media converter is used at the Ethernet ports 1-4.
2.18 Layer-2-Tunnel
The layer-2-tunnel protocol (L2TP) can be used to connect physically not directly connected
network nodes on the layer 2 of the OSI layer model.
The data traffic is packed into L2TP packets at the terminations of the L2TP tunnel which are
then transported over any arbitrary layer 3 connection (IP).
This function allows the creation of alternative routes. Also, distant isolated networks can be
connected to a layer 2 broadcast domain with the L2TP function.
50
Intelligent Switch
(Layer 2 or 3)
1 2
WAN
3 4 5
local LAN
A D V I C E
A D V I C E
Legend:
1 FO 1
2 Ethernet Port 1
3 Ethernet Port 2
4 Ethernet Port 3
5 Ethernet Port 4
1KGT151021 V000 1
Functions