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about c1921 interface gigabitethernet set speed 10 and duplex full

Hi all:

when I config c1921 interface "speed 10 and duplex full" .

I pinged gateway will be lost a lot of packets.

and the CRC counts are very high.when I set speed 10 and duplex auto.then everything will be fine.

but the company standards are must be set speed 10 and duplex full.so how can I do this.

PS:rj45-auto-detected polarity is disabled.

there is my command

 

int gi0/1

ip add x.x.x.x x.x.x.x

speed 10

duplex full

rj45-auto-detected polarity disabled

no shutdown.

no

Everyone's tags (1)
2 ACCEPTED SOLUTIONS

Accepted Solutions

What are you connection to

What are you connecting to directly from g0/1? If you're specifying 'duplex full' but the other side is 'duplex auto', you're probably negotiating to half on the other end which is where your errors are coming from. You'll need to get into the device that g0/1 is connecting to and hardcode it to 10/full as well and you should be okay...

 

HTH,

John

HTH, John *** Please rate all useful posts ***
Super Bronze

DisclaimerThe Author of this

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

Or, you might try leaving your 1921 at auto/auto.

Speed is almost always correctly discovered - at the best common.

Duplex is also usually correctly discovered unless the other side is hard code full or is an "old" interface.

2 REPLIES

What are you connection to

What are you connecting to directly from g0/1? If you're specifying 'duplex full' but the other side is 'duplex auto', you're probably negotiating to half on the other end which is where your errors are coming from. You'll need to get into the device that g0/1 is connecting to and hardcode it to 10/full as well and you should be okay...

 

HTH,

John

HTH, John *** Please rate all useful posts ***
Super Bronze

DisclaimerThe Author of this

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

Or, you might try leaving your 1921 at auto/auto.

Speed is almost always correctly discovered - at the best common.

Duplex is also usually correctly discovered unless the other side is hard code full or is an "old" interface.

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