[c-nsp] %AMDP2_FE-3-UNDERFLO: FastEthernet1/0 transmit error

[Tony]

First hit on google search:

http://supportwiki.cisco.com/ViewWiki/index.php/A_Catalyst_switch_causes_the_AMDP2_FE-3-UNDERFLO_error_on_a_connected_device

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A Catalyst switch causes the %AMDP2_FE-3-UNDERFLO error on a connected device


While a frame is being transmitted, the local buffer of the controller chip local buffer receives insufficient data. The data could not be transferred to the chip fast enough to keep pace with output rate. Normally, such a condition is temporary, depending on transient peak loads within the system.

The issue occurs when an excessive amount oftraffic is processed by the FastEthernet interface. The error message is received When traffic level reaches about 2.5 Mb. This traffic level constrain is due to hardware limitation.. Because of this there is a chance for the device connected to the catalyst switch to drop packets.
========


regards,
Tony.

--- On Wed, 3/12/08, Nimal David Sirimanne <nimal at fnbs.net> wrote:

> From: Nimal David Sirimanne <nimal at fnbs.net>
> Subject: [c-nsp] %AMDP2_FE-3-UNDERFLO: FastEthernet1/0 transmit error
> To: cisco-nsp at puck.nether.net
> Date: Wednesday, 3 December, 2008, 2:08 PM
> Hi guys,
> 
> Can anyone give me any insight into this problem? When i do
> a sh log on my 7206, is always see multiple entries for this
> error:
> 
> Dec  3 01:48:04.145: %AMDP2_FE-3-UNDERFLO: FastEthernet1/0
> transmit error
> Dec  3 01:53:24.238: %AMDP2_FE-3-UNDERFLO: FastEthernet1/0
> transmit error
> Dec  3 02:25:58.301: %AMDP2_FE-3-UNDERFLO: FastEthernet1/0
> transmit error
> Dec  3 02:52:48.477: %AMDP2_FE-3-UNDERFLO: FastEthernet1/0
> transmit error
> 
> 
> I have a 7206 running a interface with multiple subif
> (fa1/0) to a 3550 running a trunk (giga0/9). We used to get
> this error before when we were using a 2950, before it got
> replaced by this 3550. I saw a previous thread about this,
> and the problem was because duplex configuration was
> inconsistent on the 2 connected interfaces, but that
> doesn't seem to be the case here?
> 
> 7206:
> interface FastEthernet1/0
> no ip address
> no ip mroute-cache
> duplex full
> no cdp enable
> !
> interface FastEthernet1/0.1
>  encapsulation dot1Q 110
> ip address X.X.X.X 255.255.255.248
> ip access-group PERMIT_FREENET in
> no ip redirects
> no ip unreachables
> no ip proxy-arp
> no ip mroute-cache
> no cdp enable
> !
> interface FastEthernet1/0.2
>  encapsulation dot1Q 109
> ip address X.X.X.Y 255.255.255.252
> ip access-group ANTI_SPOOF_INGRESS in
> no ip unreachables
> no ip proxy-arp
> no ip mroute-cache
> no cdp enable
> !        interface FastEthernet1/0.3
>  encapsulation dot1Q 111
> ip address X.X.Y.Y 255.255.255.192
>  no ip unreachables
> no ip proxy-arp
>  no ip mroute-cache
> no cdp enable
> !        interface FastEthernet1/0.4
>  encapsulation dot1Q 113
> ip address X.X.X.Z 255.255.255.240
> no ip redirects
> no ip unreachables
> no ip proxy-arp
> no ip mroute-cache
> no cdp enable
> !        interface FastEthernet1/0.5
>  encapsulation dot1Q 112
> ip address X.X.W.W 255.255.255.240
> no ip redirects
> no ip unreachables
> no ip proxy-arp
> no ip mroute-cache
> no cdp enable
> !        interface FastEthernet1/0.6
> encapsulation dot1Q 201
> ip address X.X.V.V 255.255.255.240
> no ip redirects
> no ip unreachables
> no ip proxy-arp
> no ip mroute-cache
> no cdp enable
> 
> 3550:
> interface GigabitEthernet0/9
> description **** Trunk to 7206 ****
> switchport trunk encapsulation dot1q
> switchport trunk allowed vlan 1,109-113,201
> switchport mode trunk
> duplex full
> 
> Thanks!
> 
> Nimal David Sirimanne
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