Configuring a VPLS Service with CLI
Page 416 7750 SR OS Services Guide
Creating a Management VPLS for Spoke SDP Protection
This section provides a brief overview of the tasks that must be performed to configure a
management VPLS for spoke SDP protection and provides the CLI commands, see Figure 45. The
tasks below should be performed on all four 7750 SR nodes providing the protected VPLS service.
Before configuring a management VPLS, please first read Configuring a VPLS SAP on page 386
for an introduction to the concept of management VPLS and spoke SDP redundancy.
1. Create an SDP to the local peer 7750 SR node (node ALA-A2 in the example below).
2. Create an SDP to the remote peer 7750 SR node (node ALA-B1 in the example below).
3. Create a management VPLS.
4. Create a mesh SDP in the m-vpls using the SDP defined in Step 1. Ensure that this mesh SDP
runs over a protected LSP (see note below).
5. Enable the management VPLS service en verify that it is operationally up.
6. Create a spoke SDP inthe m-vpls using the SDP defined in Step 2.
Optionally modify STP parameters for load balancing (see Configuring Load Balancing with
Management VPLS on page 419).
7. Create one or more user VPLS services with spoke SDPs on the tunnel SDP defined by
Step 2.
As long as the user spoke SDPs created in step 8 are in this same tunnel SDP with the management
spoke SDP created in step 6, the management VPLS will protect them.
The mesh SDP should be protected by, for example, a backup LSP or Fast Reroute. If the mesh
SDP were to go down, STP on both nodes would go to “forwarding” state and a loop would occur.
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