SMU CSE 5344 - Multiple Protocol Label Switching (71 pages)

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Multiple Protocol Label Switching



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Multiple Protocol Label Switching

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Pages:
71
School:
Southern Methodist University
Course:
Cse 5344 - Computer Networks and Distributed Systems Ii
Computer Networks and Distributed Systems Ii Documents

Unformatted text preview:

SMU CSE 5344 7344 1 SMU CSE 5344 7344 2 Routing Table Destination Next Hop H1 A B C R1 Rn R4 R3 R2 H2 H5 H6 Source Destination Data H7 H3 H4 SMU R6 R7 R8 R5 CSE 5344 7344 H8 3 SMU CSE 5344 7344 4 0 1 SMU 11 2 CSE 5344 7344 5 VPI Table VPI Table VPI Table In Out Port VPI Port VPI VPI VCI TRAFFIC H1 SETUP H2 VPI Table VPI Table SMU CSE 5344 7344 6 VPI Table VPI Table VPI Table In Out Port VPI Port VPI VPI VCI TRAFFIC H1 RELEASE H2 VPI Table VPI Table SMU CSE 5344 7344 7 2 SMU CSE 5344 7344 8 SMU CSE 5344 7344 9 3 22 4 2 25 SMU 2 2 2 5 2 2 3 3 2 22 CSE 5344 7344 4 4 2 10 2 6 2 6 78 3 SMU 2 42 2 5 CSE 5344 7344 11 9 29 PACKET Forwarding MPLS IP 8 2 2 SMU CIRCUIT SWITCHING HYBRID IP ATM CSE 5344 7344 2 12 9 2 IP Router Control Control IP Router Software IP Router Software Forwarding Forwarding Longest match Lookup SMU MPLS Label Swapping CSE 5344 7344 ATM Switch Control ATM Forum Software Forwarding Label Swapping 13 10 6 2004SMU CSE 5344 7344 14 0 2 2 2 2 2 2 6 SMU 6 CSE 5344 7344 6 15 7 22 2 7 C 22 SMU 22 7 A 2 2 2 7B 6 6 2 2 5 CSE 5344 7344 16 B Layer3 data flow C A D Layer2 1 Network Topology SMU CSE 5344 7344 17 9 2 Internet LER IP LER LSR LSR LSR MPLS MPLS LSR LER D D SMU IP CSE 5344 7344 18 2 R6 R1 R5 R2 R3 R4 a R6 R1 LSR1 LSR3 R5 R2 LSR2 R3 SMU R4 CSE b 5344 7344 19 9 6 2 B 7 2 2 2 22 25 2 2 2 SMU B 2 2 2 CSE 5344 7344 20 10 6 2004SMU CSE 5344 7344 21 SMU CSE 5344 7344 22 2 22 2 22 SMU 6 CSE 5344 7344 23 6 2 2 SMU 2 2 2 2 2 7 2 CSE 5344 7344 24 6 0 SMU 2 CSE 5344 7344 25 2 6 9 2 2 2 SMU 6 2 2 6 CSE 5344 7344 6 C 6 26 1a Routing protocols e g OSPF exchange reachability to destination networks 4 LER at egress removes label and delivers packet 1b Label Distribution Protocol LDP establishes label mappings to destination network IP IP 10 2 Ingress LER receives packet and label s packets SMU CSE 5344 7344 IP 20 IP 40 3 LSR forwards packets using label swapping IP 27 2 9 2 7 22 22 C 2 SMU 2 2 CSE 5344 7344 22 2 28 2 2 6 E 2 6 SMU 2 CSE 5344 7344 29 Dest a b c d Dest a



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