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Channel hubs therefore have another function: They provide bypass circuits that prevent the loop from breaking if one device fails or is removed. If a device is removed from a loop (for example, by pulling its interconnect plug), the hub’s bypass circuit detects the absence of signal and
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Arbitrated loop can be physically cabled in a ring fashion or using a hub. The physical ring ceases to work if one of the devices in the chain fails. The hub on the other hand, while maintaining a logical ring, allows a star topology on the cable level. Each
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immediately begins to route incoming data directly to the loop’s next port, bypassing the missing device entirely. This gives loops at least a measure of resiliency—failure of one device in a loop doesn’t cause the entire loop to become inoperable.
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An NL_Port must provide fabric logon (FLOGI) and name registration facilities to initiate communication with other node through the fabric (to be an
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Only two ports may communicate at a time on the loop. One port wins arbitration and may open one other port in either half or full duplex mode.
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Channel ports capable of arbitrated loop communication are NL_port (
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359:"What Is Fibre Channel Arbitrated Loop and How's It Working"
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The bandwidth on the loop is shared among all ports.
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106:Learn how and when to remove this message
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159:Registered state change notification
44:adding citations to reliable sources
128:Layer 4. Protocol mapping
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201:FC-AL drive with SCA-2 connector.
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339:List of Fibre Channel standards
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507:Topology of the World Wide Web
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367:. Retrieved
365:. 2019-09-03
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38:Please help
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440:Bus network
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134:LUN masking
522:Categories
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369:2023-10-19
345:References
66:newspapers
492:Hypertree
295:initiator
487:Fat tree
363:MiniTool
318:See also
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230:servers
213:, is a
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