RP/0/RP0/CPU0:CE3#ping 192.168.4.1 source 192.168.3.1 count 20 timeout 1
Sun Oct  4 04:47:56.802 UTC
Type escape sequence to abort.
Sending 20, 100-byte ICMP Echos to 192.168.4.1 timeout is 1 seconds:
!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (20/20), round-trip min/avg/max = 11/15/50 ms
RP/0/RP0/CPU0:CE3#ping 192.168.4.1 source 192.168.3.1 size 1492 df-bit count 5 timeout 1
Sun Oct  4 04:47:58.045 UTC
Type escape sequence to abort.
Sending 5, 1492-byte ICMP Echos to 192.168.4.1 timeout is 1 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 10/12/15 ms
RP/0/RP0/CPU0:CE3#ping 192.168.4.1 source 192.168.3.1 size 1493 df-bit count 5 timeout 1
Sun Oct  4 04:47:59.216 UTC
Type escape sequence to abort.
Sending 5, 1493-byte ICMP Echos to 192.168.4.1 timeout is 1 seconds:
.....
Success rate is 0 percent (0/5)
RP/0/RP0/CPU0:CE3#ping 192.168.4.1 source 192.168.3.1 size 1500 df-bit count 5 timeout 1
Sun Oct  4 04:48:05.385 UTC
Type escape sequence to abort.
Sending 5, 1500-byte ICMP Echos to 192.168.4.1 timeout is 1 seconds:
.....
Success rate is 0 percent (0/5)
RP/0/RP0/CPU0:CE3#ping 192.168.4.1 source 192.168.3.1 size 1500 count 5 timeout 1
Sun Oct  4 04:48:11.259 UTC
Type escape sequence to abort.
Sending 5, 1500-byte ICMP Echos to 192.168.4.1 timeout is 1 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 24/31/45 ms
RP/0/RP0/CPU0:CE3#traceroute 192.168.4.1 source 192.168.3.1 timeout 1 probe 2 maxttl 5
Sun Oct  4 04:48:12.163 UTC

Type escape sequence to abort.
Tracing the route to 192.168.4.1

 1  10.2.6.2 18 msec  30 msec 
 2  10.2.3.3 [MPLS: Labels 24001/24003 Exp 0] 23 msec  19 msec 
 3  10.3.4.4 [MPLS: Label 24003 Exp 0] 25 msec  19 msec 
 4  10.4.7.7 10 msec  *