Article: Cisco CCNA /CCNP: How And Why To Build An Etherchannel
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Cisco CCNA /CCNP: How And Why To Build An Etherchannel
CCNA and CCNP candidates are well-versed in Spanning-Tree Protocol, and one of the great things about STP is that it works well with little or no additional configuration. There is one situation where STP works against us just a bit while it prevents switching loops, and that is the situation where two switches have multiple physical connections.
You would think that if you have two separate physical connections between two switches, twice as much data could be sent from one switch to the other than if there was only one connection. STP doesn't allow this by default, however in an effort to prevent switching loops from forming, one of the paths will be blocked.
SW1 and SW2 are connected via two separate physical connections, on ports fast0/11 and fast 0/12. As...
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