 | Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |
A single VPLS routing instance can encompass one set of PE routers that use BGP for signaling and another set of PE routers that use LDP for signaling. Within each set, all of the PE routers are fully meshed in both the control and data planes and have a bidirectional pseudowire to each of the other routers in the set. However, the BGP-signaled routers cannot be directly connected to the LDP-signaled routers. To be able to manage the two separate sets of PE routers in a single VPLS routing instance, a border PE router must be configured to interconnect the two sets of routers.
The VPLS RFCs and Internet drafts require that all of the PE routers participating in a single VPLS routing instance must be fully meshed in the data plane. In the control plane, each fully meshed set of PE routers in a VPLS routing instance is called a PE router mesh group. The border PE router must be reachable by and have bidirectional pseudowires to all of the PE routers that are a part of the VPLS routing instance, both the LDP-signaled and BGP-signaled routers.
For LDP BGP interworking to function, LDP-signaled routers can only be configured with forwarding equivalence class (FEC) 128.
The following sections describe how to configure BGP LDP interworking for VPLS:
| Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |