The primary case for ESM termination is business services. Figure: ESM termination shows an example of ESM termination.
Figure: ESM termination
In this example:
Communication occurs between points 1 and 4.
RG (Residential Gateway) at point 2 encapsulates L2 customer frames into GRE and sends them the SR OS node (7x50 BNG).
The BNG node at point 3 terminates the subscriber traffic, performs an Layer 3 lookup, and sends it to the destination.
The following shows an example where a PW SAP is configured under a subscriber interface:
configure
service vprn 3 customer 1 create
interface subscriber-interface <sub-if-name>
address 192.168.1.1/24
group-interface <grp-if-name>
sap pw-1:10.10 create
The following shows an example with the capture of a PW SAP configured:
configure
service vpls 2 customer 1 create
trigger-packet dhcp pppoe
sap pw-1:*.* capture-sap create