Topic

MPLS

3 questions in this topic.

2013 Q4(d)Link LayerMPLS· 6 marks

Your corporate network incorporates an MPLS network purchased from an ISP to link your US and Australian offices. Explain how a packet in your offices in Sydney is routed through the MPLS network to arrive in San Francisco.

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2014 Q4(a)Link LayerMPLS· 6 marks

Explain how a packet enters a Multi-Protocol Label Switching (MPLS) network, how it is routed through the network and how it is ultimately delivered. Consider using a simple diagram to help you explain your answer.

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2015 Q5(d)Link LayerMPLS· 4 marks

Consider the Multi-Protocol Label Switching (MPLS) network shown in Figure 3, and suppose that routers R5 and R6 are now MPLS enabled. Suppose that we want to perform traffic engineering so that packets from R6 destined for A are switched to A via R6-R4-R3-R1, and packets from R5 destined for A are switched via R5-R4-R2-R1. Show the MPLS tables in R5 and R6, as well as the modified table in R4, that would make this possible. (Clearly indicate the name of the router and clearly draw the routing table where required to show additions or changes to routing tables. You do not need to reproduce the network)

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