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2851 router auto-mdix question

cornwallcollege
Level 1
Level 1

Hi All,

I'm just wondering if there is any documentation that confirms if the 2 built-in Gigabit ports on a Cisco 2851 router support (or otherwise) auto-mdix.

I can find information for the modules but not the 2 built-in ports.

Many thanks.

1 Accepted Solution

Accepted Solutions

Oleksandr Nesterov
Cisco Employee
Cisco Employee

Hi

Yes, routers 2821 and 2851 support MDIX on built-in ports.

Routers 2801 and 2811 doesn't.

HTH,

Alex

View solution in original post

3 Replies 3

Oleksandr Nesterov
Cisco Employee
Cisco Employee

Hi

Yes, routers 2821 and 2851 support MDIX on built-in ports.

Routers 2801 and 2811 doesn't.

HTH,

Alex

Many thanks Alex.

Is it correct that if you force either the port speed or duplex then auto-mdix is disabled as a result?

That depends on the platform.

For catalyst switches auto-mdix is disabled when speed and duplex are not auto.

Alex

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