PPMP Label in Cisco CCIE Service Provider Written Exam

D.

The PPMP label, also known as the Provider-Provisioned Multicast Protocol label, is a label that is used in certain multicast VPN (m VPN) models. The PPMP label is used to identify the multicast VPN (m VPN) routing and forwarding information for multicast traffic that is sent between multiple customer sites over a service provider's network.

Of the options given, the PPMP label is used for two specific m VPN models:

B. The PPMP label is used for inter-AS m VPN models that use mLDP (Multipoint Label Distribution Protocol). This is a multicast VPN model that allows multicast traffic to be sent between different autonomous systems (ASes) over a service provider's network. In this model, the PPMP label is used to identify the multicast VPN (m VPN) routing and forwarding information for the multicast traffic that is sent between the ASes.

C. The PPMP label is also used for the partitioned m VPN model with PIM (Protocol Independent Multicast) signaling in an overlay model. This is another multicast VPN model that allows multicast traffic to be sent between different customer sites over a service provider's network. In this model, the PPMP label is used to identify the multicast VPN (m VPN) routing and forwarding information for the multicast traffic that is sent between the different customer sites.

Therefore, the correct answer is C. The PPMP label is used for the partitioned m VPN model with PIM signaling in an overlay model, and B. only for inter-AS m VPN models that use mLDP. Answers A, D, and E are incorrect.