Teresa,
Here is what CCO has to say about the error you have:
Error Message: %AMDP2_FE-3-UNDERFLO Unit [dec], underflow error
Explanation:
The Ethernet hardware is requesting data faster than the system
can supply it. This should never happen unless a serious
malfunction has occurred.
Recommended Action:
Contact Cisco Systems.
Before you go about contacting Cisco TAC, I am curious about
one item in your configuration. Why is your Ethernet interface
set up with weighted fair queueing? WFQ is designed for low
speed interfaces (T1/E1 and below). Also, the default queueing
method for this interface is FIFO (First in, First out). You
may want to try this and see if it helps:
grp_ge#conf t
grp_ge(config)#int e0/1
grp_ge#(config-if)#no fair-queue
grp_ge#(config-if)#end
grp_ge#
Additionally, you may want to take a peek at this article; note
the emphasis on queueing on **WAN** links/low speed links(watch
wrap):
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/
121cgcr/qos_c/qcprt2/qcdwfq.htm
HTH,
Paul Werner
> Subject: Re: sh arp [7:17012]
>
> It didn't ping successfully.
> In the sho log I see the following line:
> UTC: %AMDP2_FE-3-UNDERFLO: Ethernet0/1 transmit error
>
> I reloaded the router and now I can see all the MAC address
in the arp
> cache.
> By the way something is going wrong...
>
> see this two sh int output
> grp_ge#sh int eth0/1
> Ethernet0/1 is up, line protocol is up
> Hardware is AmdP2, address is 00b0.6469.4641 (bia
00b0.6469.4641)
> Description: "LAN Uffici Genova"
> Internet address is 172.17.1.33/24
> MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
> reliability 255/255, txload 1/255, rxload 58/255
> Encapsulation ARPA, loopback not set
> Keepalive set (10 sec)
> ARP type: ARPA, ARP Timeout 04:00:00
> Last input 00:00:01, output 00:00:00, output hang never
> Last clearing of "show interface" counters 00:58:52
> Input queue: 0/75/0/0 (size/max/drops/flushes); Total
output drops: 0
> Queueing strategy: weighted fair
> Output queue: 0/1000/64/0 (size/max total/threshold/drops)
> Conversations 0/2/256 (active/max active/max total)
> Reserved Conversations 0/0 (allocated/max allocated)
> Available Bandwidth 7500 kilobits/sec
> 30 second input rate 2286000 bits/sec, 4703 packets/sec
> 30 second output rate 8000 bits/sec, 13 packets/sec
> 16568680 packets input, 1006250867 bytes, 0 no buffer
> Received 2701 broadcasts, 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
> 0 input packets with dribble condition detected
> 41880 packets output, 20367226 bytes, 0 underruns
(1268/2497/0)
> 0 output errors, 3765 collisions, 0 interface resets
> 0 babbles, 0 late collision, 6301 deferred
> 0 lost carrier, 0 no carrier
> 0 output buffer failures, 0 output buffers swapped out
>
> and after few seconds
>
> grp_ge#sh int eth0/1
> Ethernet0/1 is up, line protocol is up
> Hardware is AmdP2, address is 00b0.6469.4641 (bia
00b0.6469.4641)
> Description: "LAN Uffici Genova"
> Internet address is 172.17.1.33/24
> MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
> reliability 255/255, txload 1/255, rxload 58/255
> Encapsulation ARPA, loopback not set
> Keepalive set (10 sec)
> ARP type: ARPA, ARP Timeout 04:00:00
> Last input 00:00:01, output 00:00:00, output hang never
> Last clearing of "show interface" counters 00:59:13
> Input queue: 1/75/0/0 (size/max/drops/flushes); Total
output drops: 0
> Queueing strategy: weighted fair
> Output queue: 0/1000/64/0 (size/max total/threshold/drops)
> Conversations 0/2/256 (active/max active/max total)
> Reserved Conversations 0/0 (allocated/max allocated)
> Available Bandwidth 7500 kilobits/sec
> 30 second input rate 2282000 bits/sec, 4695 packets/sec
> 30 second output rate 4000 bits/sec, 8 packets/sec
> 16670090 packets input, 1012418296 bytes, 0 no buffer
> Received 2716 broadcasts, 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
> 0 input packets with dribble condition detected
> 42038 packets output, 20377608 bytes, 0 underruns
(1268/2501/0)
> 0 output errors, 3769 collisions, 0 interface resets
> 0 babbles, 0 late collision, 6318 deferred
> 0 lost carrier, 0 no carrier
> 0 output buffer failures, 0 output buffers swapped out
>
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