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DUA1840-0AAA01
Resilient Links
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Resilient Links
Switch 1005 ports can be configured to provide resilient links. A
resilient link consists of a main link and a standby link. Under normal
network operating conditions, the main link carries your data. The fiber
Receive Idle signal or the Test Pulse on twisted pair links is continually
monitored by the management software. If a signal loss is detected,
management software immediately enables the standby port so that it
carries the data and network disruption is minimized. In addition, the
main port is disabled.
When setting up resilient links, you should note the following:
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Up to 12 resilient link pairs can be configured on the Switch 1005.
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The main and standby ports must be set up on the same Switch 1005
or module pair (main module with fitted expansion module).
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Resilient links can be set up on any of the external ports.
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Resilient links can only be set up on fiber or twisted pair links. The main
and standby links in the same pair however, can use any combination
of these media or speed (10Mbps/100Mbps).
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A backbone port can be configured as a main port in a resilient link
pair. If a resilient backbone port fails, the standby port is immediately
configured as a backbone port before it is enabled. A backbone port
cannot be configured as a standby port.
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Both ports must have an identical security setup.
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Both ports must belong to the same VLAN.
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You cannot disable any port that is part of a resilient link pair.
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The resilient link must only be defined at one end of the link.
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A resilient link can only be set up if neither of the ports already form
part of another resilient link pair.
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If an active standby link fails and there is a link on the main port, the
main port will be enabled and the standby port will be disabled.