Exam 23: Multiprotocol Label Switching

A ________ emulates a point-to-point or point-to-multipoint link and provides a single service that is perceived by its user as an unshared link or circuit of the chosen service.

The MPLS architecture supports two routing options: hop-by-hop and ________.

The components that work together to implement MPLS-TE are: information distribution,path calculation,path setup and ________.

Multiprotocol Label Switching is well suited to implementing virtual private networks.

_______ are constructed based on link level addresses.

Like IP,MPLS is connection oriented.

________ are widely used by enterprises to create WANs that span large geographic areas,to provide site-to-site connections to branch offices, and to allow mobile users to dial up their company LANs.

________ refers to the fact that traffic routing is determined by labels,and is exercised below normal IP routing and filtering.

A ________ is a private network that is configured within a public network in order to take advantage of the economies of scale and management facilities of large networks.

MPLS is an enhancement that does not require an upgrade to IP routers to support its features.

A MPLS label is a 32-bit field consisting of the following elements: label value,S,TTL,and ________.

MPLS delivers the quality of service required to support real-time voice and video but does not deliver SLAs that guarantee bandwidth.

MPLS is a set of ________ specifications for including routing and traffic engineering information in packets.

Route selection refers to the selection of an LSP for a particular FEC.

One of the benefits of MPLS is that it does not need to retain the flexibility of an IP-based networking approach

MPLS is used to ensure that all packets in a particular flow take the same route over a ________.

A MPLS network or internet consists of a set of nodes,called ________ capable of switching and routing packets on the basis of which a label has been appended to each packet.

________ is a set of protocols,or protocol suite,designed to address a number of issues,including traffic engineering,QoS,virtual private networks,and IP/ATM integration.

Path calculation is a signaling protocol to reserve the resources for a traffic flow and to establish the LSP for a traffic flow.

For services such as voice and video that require a network with high predictability,the DS and IS approaches,by themselves,may prove inadequate on a heavily loaded network.