Configure LAN State Propagation
Table of Contents
Configure LAN State Propagation
Let us learn to configure the LAN state propagation.
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LAN state propagation allows propagating a
LAN port's link state to its corresponding WAN port in a bypass pair.
When LAN connectivity to a downstream switch is lost, the LAN port
state is communicated to the upstream WAN device, thereby allowing
traffic to take alternate paths through other Prisma SD-WAN LAN
ports. LAN State Propagation is applicable only in the LAN-to-WAN
direction. In effect, when a LAN port in a bypass pair goes down,
it also brings down the corresponding WAN port of the bypass pair.
However, in a failure with a WAN port, the LAN port will continue
to remain up.
- Select , select the device you want to configure.Select the Interfaces tab.Select a port that is configured as a Bypass Pair.For Propagate LAN State, select Yes.Save Bypass Pair.Thus, when a LAN port in a bypass pair goes down, it also brings down the corresponding WAN port of the bypass pair.
