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New Member

MDI on newer switches

Hi,

Are there any advantages to still using crossover cables between newer switches which support mdix auto?

Thanks,

Carlos

Everyone's tags (2)
2 ACCEPTED SOLUTIONS

Accepted Solutions
Cisco Employee

Re: MDI on newer switches

Yes. If you want to hard code the duplex and speed, you will need to use crossover cable. Hence, hard code duplex and speed will turn off auto MDIX.

HTH,

jerry

Hall of Fame Super Blue

Re: MDI on newer switches

insomniacgames_nc wrote:

is it best practices to hard code speed and duplex on

switch to switch ports to eliminate potential problems in auto-negotiation?

Thanks,

Carlos

Not necessarily. Gigabit is often best left to auto-negotiate. 10/100 interconnects in the past i have tended to hardcode speed/duplex. But obviously if you are using mdix you can't anyway.

Jon

4 REPLIES
Cisco Employee

Re: MDI on newer switches

Yes. If you want to hard code the duplex and speed, you will need to use crossover cable. Hence, hard code duplex and speed will turn off auto MDIX.

HTH,

jerry

New Member

Re: MDI on newer switches

is it best practices to hard code speed and duplex on

switch to switch ports to eliminate potential problems in auto-negotiation?

Thanks,

Carlos

Hall of Fame Super Blue

Re: MDI on newer switches

insomniacgames_nc wrote:

is it best practices to hard code speed and duplex on

switch to switch ports to eliminate potential problems in auto-negotiation?

Thanks,

Carlos

Not necessarily. Gigabit is often best left to auto-negotiate. 10/100 interconnects in the past i have tended to hardcode speed/duplex. But obviously if you are using mdix you can't anyway.

Jon

New Member

Re: MDI on newer switches

I personally do not use MDI and use crossover patches anyway since they will work on any switch. I also color code them so it's easier to find problems when a trunk goes down.

I was just curious if MDI is best to stay away from if given the choice.

Thanks

Carlos

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