Routing protocol in all three types of networks - Phase 1

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Presentation transcript:

Routing protocol in all three types of networks - Phase 1 Dest. Next hop B II III Routing tables II Routing protocol III Host B Host A I V IV Routing protocols exchange topology/loading/reachability information Routes to destinations are precomputed and stored in routing tables

Signaling protocol for NL connection setup in a CO network - Phase 2 Port /Label OUT Port/Label d/L1 b/L3 II Connection setup (B) a b c d c a b Connection setup Host A I Connection setup III Connection setup IN Port /Label OUT Port/Label a/L1 c/L2 Host B a b c d Virtual circuit V IV IN Port /Label OUT Port/Label a/L2 c/L1 Connection setup consists of each switch on the path Route lookup for next hop node to reach destination CAC (Connection Admission Control) for buffer and BW Writing the input/output label mapping tables and programming the scheduler (PS CO); or writing the timeslot/l mapping table for CS CO networks

User-plane packet forwarding in a PS CO network - Phase 3 II L3 b a a L1 Host A I III L1 c b Host B b c d c L2 V IV a d Labels are VPI/VCIs in ATM Labels are translated from link-to-link