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New Member

Transmisson Error on FastEthernet

I keep getting "%AMDP2_FE-3-UNDERFLO: FastEthernet0/0 transmit error" message from Cisco2620XM

It's a brand new router. Not being connected to any network yet.

The issue is my router F0/0 line protocol is down when i connect it to a switch. The switch port keep flapping from amber to green.

Could this be hardware issue?

Below is the answer from cisco website when i checked the using "Error Message Decoder"

%AMDP2_FE-3-UNDERFLO: [chars], transmit error

While transmitting a frame, the local buffer of the controller chip received insufficient data because data could not be transferred to the chip fast enough to keep pace with its output rate. Normally, such a problem is temporar y, depending on transient peak loads within the system. The system should recover.

Recommended Action: No action is required.


Re: Transmisson Error on FastEthernet

Duplex mismatch between router and switch ????

New Member

Re: Transmisson Error on FastEthernet

I've not yet connect it to the switch. It's brand new router from the box.

Once I boot up the router, the error message keeps coming out on the screen.

New Member

Re: Transmisson Error on FastEthernet

Hi Sorry..

Let me make it clearer...

Once boot up the brand new router start giving this error message. Even before i connect it to the switch. After that i tried to connect it to a switch, hoping it will resolve the issue but as i mention earlier the int f0/0 line protocol was down and the switch port keep flapping.