FAQ-What 'P' in NE40 tracert Results Means

Publication Date:  2012-07-27 Views:  105 Downloads:  0
Issue Description
Q:
The destination IP address can be pinged. The !P mark appears when tracert operation is performed.
Output display of normal tracert:
<NE40_2>ping 10.23.76.67
PING 10.23.76.67: 56 data bytes, press CTRL_C to break
Reply from 10.23.76.67: bytes=56 Sequence=1 ttl=254 time = 15 ms
Reply from 10.23.76.67: bytes=56 Sequence=2 ttl=254 time = 20 ms
Reply from 10.23.76.67: bytes=56 Sequence=3 ttl=254 time = 15 ms
Reply from 10.23.76.67: bytes=56 Sequence=4 ttl=254 time = 21 ms
Reply from 10.23.76.67: bytes=56 Sequence=5 ttl=254 time = 15 ms

--- 10.23.76.67 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 15/17/21 ms
。Output display with "!P":
<NE40_2>tracert 10.23.76.67
traceroute to 10.23.76.67(10.23.76.67) 30 hops max,40 bytes packet
1 10.8.4.4 29 ms 29 ms 30 ms
2 10.23.76.67 20 ms !P 79 ms !P 20 ms !P 
 
Alarm Information
Null
Handling Process
A:
IP indicates that a destination unreachable ICMP error message is returned for the UDP packets sent through tracert .Tracert identifies the destination unreachable ICMP messages of different types and outputs corresponding information. 
 
Root Cause
Null
Suggestions
Null

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