Alcatel-Lucent 7750 SR - Figure 105: Flood Containment Requirement in M:1 Model

Virtual Private LAN Services
7750 SR OS Services Guide Page 779
Per customer VPN distribution trees need to be created dynamically throughout the BVPLS as
new customer I-VPLS instances are added in the PBB PEs.
Alcatel-Lucent’s PBB implementation employs the IEEE 802.1ak Multiple MAC Registration
Protocol (MMRP) to dynamically build per I-VPLS distribution trees inside a certain B-VPLS
infrastructure.
IEEE 802.1ak Multiple Registration Protocol (MRP) – specifies changes to IEEE Std 802.1Q that
provide a replacement for the GARP, GMRP and GVRP protocols. MMRP application of IEEE
802.1ak specifies the procedures that allow the registration/de-registration of MAC addresses over
an Ethernet switched infrastructure.
In the PBB case, as I-VPLS instances are enabled in a certain PE, a group BMAC address is by
default instantiated using the standard based PBB Group OUI and the ISID value associated with
the I-VPLS.
When a new I-VPLS instance is configured in a PE, the IEEE 802.1ak MMRP application is
automatically invoked to advertise the presence of the related group B-MAC on all active B-VPLS
SAPs and SDP bindings.
When at least two I-VPLS instances with the same ISID value are present in a B-VPLS, an
optimal distribution tree is built by MMRP in the related B-VPLS infrastructure as depicted in
Figure 105.
Figure 105: Flood Containment Requirement in M:1 Model
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B-VPLS Metro Infrastructure
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