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Cisco 837 speed and duplex problem

I have one Cisco 837 connected to Cisco 1900 and Cisco 2924XL. When i set the speed and duplex to 10 full duplex or 100 full duplex i 837 the fastethernet interface is going down. Its working if i set speed and duplex to auto i 837 router. I have 12.4(4)T release on my Cisco 837.

3 REPLIES

Re: Cisco 837 speed and duplex problem

Both sides of the link must be set identically when you are specifying a fixed speed.

As far as I'm concerned, auto is the preferred setting. Use that unless it doesn't work. This only happens rarely nowadays

Regards,

Leo

Re: Cisco 837 speed and duplex problem

Hi

AFAIK 1900 doesnt support auto negotiation so better manually hardcode the speed and duplex to 10/half or 10/full on the port which is connecting to 1900 and

100/full to the port which is connecting to 2924 coz it does support 100/full.

regds

Re: Cisco 837 speed and duplex problem

The 1900 has 10Mb client ports and 2 100Mb UTP or fiber uplinks. The uplinks are fixed at 100Mb.

The 2924 does support 10/100Mb auto negotiation.

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