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An MPLS service provider is offering a standard EoMPLS-based VPLS service to Customer A. providing Layer 2 connectivity between a central site and approximately 100 remote sites. Customer A wants to use the VPLS network to carry its internal multicast video feeds which are sourced at the central site and consist of 20 groups at Mbps each. Which service provider recommendation offers the most scalability?

1. A. EoMPLS-based VPLS can carry multicast traffic in a scalable manner
2. B. Use a mesh of GRE tunnels to carry the streams between sites
3. C. Enable snooping mechanisms on the provider PE routers.
4. D. Replace VPLS with a Layer 3 MVPN solution to carry the streams between sites

Reveal Solution

Correct Answer: D

Customer XYZ network consists of an MPLS core. IS-IS running as IGP a pair of BGP route reflectors for route propagation, and a few dozens of MPLS-TE tunnels for specific tactical traffic engineering requirements. The customer's engineering department has some questions about the use of the Overload Bit in the IS-IS networks and how it could be used to improve their current network design. Which two concepts about the Overload Bit are true? (Choose two.)

1. A. It can be set on a router during the startup process for a fixed period of time
2. B. Networks advertised within the LSPs of the respective node will become unreachable
3. C. It forces the midpoint MPLS-TE node to reoptimize the primary tunnels going through the OL node.
4. D. It can be set on a router until other interacting protocols have signaled convergence.
5. E. It is not recommended on BGP Route Reflectors

Reveal Solution

Correct Answer: AD