Figure 1 shows an example of Layer 2 termination and hand-off.
Figure 1. Layer 2 Termination and Hand-off
In this example:
Communication occurs between points 1 and 6.
There may be a router present at point 2. A router at point 2 would see a Layer 3 device at point 5 as a Layer 3 next-hop. Everything in between is Layer 2.
The device at point 3 encapsulates Layer 2 Ethernet frames into GRE and sends them to the SR OS node (7x50).
The SR OS node at point 4 de-encapsulates the packet and sends it into the Layer 2 service that leads to the node at point 5.
The following shows an example of PW SAP configured under an Epipe:
configure
service epipe 4 customer 1 create
sap pw-1:2 create
spoke-sdp 1:1