MPLS local protection

In the event of a network element failure when recovery mechanisms are employed at the IP layer, restoration may take several seconds which may be unacceptable for real-time applications such as VoIP. In contrast, MPLS local protection meets the requirements of real-time applications with recovery times comparable to those of SONET rings of less than 50 ms.

MPLS and MulticastMulticast was for the most part an after-thought in MPLS design. It was introduced by point-to-multipoint RSVP-TE. It was driven by Service Provider requirements to transport broadband video over MPLS. Since the inception of RFC 4875 there has been tremendous surge in interest and deployment of MPLS multicast and this has led to several new developments both in the IETF and in shipping products.

August 8, 2011

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