INE ICMP issues on Ethernet Link using dynamips

Hi Folks,

R3 FA0/0 is connected to SW1 Fa1/3 using dynamips. IOS 3725 Enterprise. I
have ICMP issue. The debug show ICMP is responsing but i received .......
Anyone encountered this before and any solution? Thanks.

Rack1R3(config)#do sh run int fas0/0
Building configuration...
Current configuration : 115 bytes
!
interface FastEthernet0/0
 ip address 155.1.37.3 255.255.255.0
 ip rip advertise 10
 speed 100
 full-duplex
end
Rack1R3(config)#

Rack1SW1#sh run int fas1/3
Building configuration...
Current configuration : 130 bytes
!
interface FastEthernet1/3
 no switchport
 ip address 155.1.37.7 255.255.255.0
 ip rip advertise 10
 duplex full
 speed 100
end

Rack1R3(config)#do debug ip icmp
ICMP packet debugging is on
Rack1R3(config)#do ping 155.1.37.7
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 155.1.37.7, timeout is 2 seconds:
*....*
*Mar 1 00:07:46.435: ICMP: echo reply rcvd, src 155.1.37.7, dst 155.1.37.3.
Success rate is 0 percent (0/5)
Rack1R3(config)#
*Mar 1 00:07:48.603: ICMP: echo reply rcvd, src 155.1.37.7, dst 155.1.37.3
Rack1R3(config)#
*Mar 1 00:07:50.763: ICMP: echo reply rcvd, src 155.1.37.7, dst 155.1.37.3
Rack1R3(config)#
*Mar 1 00:07:52.267: ICMP: echo reply rcvd, src 155.1.37.7, dst 155.1.37.3
Rack1R3(config)#
*Mar 1 00:07:54.451: ICMP: echo reply rcvd, src 155.1.37.7, dst 155.1.37.3
Rack1R3(config)#

Rack1SW1#debug ip icmp ?
  <cr>
Rack1SW1#debug ip icmp
ICMP packet debugging is on
Rack1SW1#
*Mar 1 00:07:41.439: ICMP: echo reply sent, src 155.1.37.7, dst 155.1.37.3
Rack1SW1#
*Mar 1 00:07:43.439: ICMP: echo reply sent, src 155.1.37.7, dst 155.1.37.3
Rack1SW1#
*Mar 1 00:07:45.443: ICMP: echo reply sent, src 155.1.37.7, dst 155.1.37.3
Rack1SW1#
*Mar 1 00:07:47.439: ICMP: echo reply sent, src 155.1.37.7, dst 155.1.37.3
Rack1SW1#
*Mar 1 00:07:49.439: ICMP: echo reply sent, src 155.1.37.7, dst 155.1.37.3
Rack1SW1#

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Received on Thu Feb 04 2010 - 14:59:22 ART