Alcatel-Lucent 7450 ESS Series Configuration Manual page 55

Note:
In this case BFD is run between
the IES/VPRN interfaces
independent of the SPD/LSP paths
7450 ESS OS Router Configuration Guide
Metro
POP 1
IES/
VPRN
Spoke
SDP
Headend
Router
Headend
Router
IES/
VPRN
Metro
POP 4
Figure 10: BFD for IES/VPRN over Spoke SDP
IP Router Configuration
BFD
Primary Path
Secondary Path
Metro
POP 2
IES/
VPRN
Spoke
SDP
IES/
VPRN
Metro
POP 3
Fig_31
Page 55