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ChinmayKulkarni
Beginner

Etherchannel Pre-requisites on links

I was learning Etherchannels where it said there are some prerequisite on the link that the interfaces should be same on speed, duplex, operational mode etc.

I put two interface on a switch into an etherchannel. Then I tried to change one interface to half duplex and 10 Mbps while other was 100Mbps and full duplex. The interfaces were still operational in the etherchannel as P ~ bundled in etherchannel.

Am I wrong in understanding that the speed and duplex of both interfaces should be same before they can be bundled in an etherchannel?

Thanks in advance.

2 REPLIES 2
balaji.bandi
VIP Master

yes, you need to have same capacity 10MB or 100MB, you can not mix speed.

 

here is the good guide lines :

 

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12-2_55_se/configuration/guide/3750xscg/swethchl.html

 

 

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Leo Laohoo
VIP Community Legend

Are you seeing this in PacketTracer?