When one link between two devices does not provide sufficient bandwidth then additional links may be added. Up to four ports can be trunked* together to provide a high-bandwidth, full-duplex trunk. MultiLink Trunking also provides load-balancing and fail-over protection for important connections to other switches or servers: if one of the trunked links should fail, the remaining links in a MultiLink Trunk will still be available. Up to six separate Multilink Trunks can be configured per BayStack TM 425 or 470.

* Trunks can have many definitions, for this implementation, the trunk is a communications link between two devices that can carry traffic for many customers, and may include tagged VLAN traffic.

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