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Redundant, parallel, Ethernet link between switches Increase bandwidth 100Mb + 100Mb No switch over delay if one link fails. Switch. Switch. Loop. Switch. Switch. 100Mbit. 100Mbit. Networ k redundancy: Link aggregation (trunking). Link aggregation. No Link Aggregation. With
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Redundant, parallel, Ethernet link between switches Increase bandwidth 100Mb + 100Mb No switch over delay if one link fails Switch Switch Loop Switch Switch 100Mbit 100Mbit Network redundancy: Link aggregation (trunking) • Link aggregation No Link Aggregation With Link Aggregation
Redundancy for the Ethernet ring Restoring the link takes time (1 – 30 Sec) Max number of “hops” (switches) is 7 Switch Loop Network redundancy: Spanning Tree Protocol (1) • STP CIN Switch CIN Switch CIN Switch CIN
Redundancy for the Ethernet ring Restoring the link takes time (1 – 30 Sec) Switch Switch Switch Switch Switch Switch Switch CIN CIN CIN CIN CIN Network redundancy: Spanning Tree Protocol (2) • STP
HP only Combination of Link aggregation and STP Redundancy for the Ethernet links Fast restoring Increased bandwidth Network redundancy: Meshing (HP only) • Meshing Switch Switch Switch Switch Switch Switch