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FAQ-What is the Meaning of Returned Information of Tracert

Publication Date:  2012-07-27 Views:  53 Downloads:  0
Issue Description
Q:
Trace returns the following information, what is the meaning of  "!<13>"?
<Router>tracert -a 10.200.113.202 10.97.64.129 
 traceroute to 10.97.64.129(10.97.64.129) 30 hops max,40 bytes packet 
 1 10.97.92.9 3 ms  34 ms  2 ms 
 2 10.97.92.9 4 ms  !<13> 3 ms  !<13> 3 ms  !<13> 
Alarm Information
Null
Handling Process
A:
The device returns type=3 code=13 packet. It means that packets are discarded and communication is forcibly denied because of configuring ACL filter.
Root Cause
Execute Tracert, at NE40 open debug ip icmp and have the following information:
<Router>tracert -a 10.200.113.202 10.97.64.129 
 traceroute to 10.97.64.129(10.97.64.129) 30 hops max,40 bytes packet  1
*0.20737910 NE40 IP/8/debug_icmp:
ICMP Receive: ttl-exceeded(Type=11, Code=0),
 Src = 10.97.92.9, Dst = 10.200.11 3.202 10.97.92.9 4 ms 
ICMP Receive: ttl-exceeded(Type=11, Code=0),
 Src = 10.97.92.9, Dst = 10.200.113.202 4 ms 
ICMP Receive: ttl-exceeded(Type=11, Code=0),
 Src = 10.97.92.9, Dst = 10.200.113.202 4 ms  2 
*0.20737923 NE40 IP/8/debug_icmp: ICMP Receive: communication-filter-forbidden(Type=3, Code=13), 
Src = 10.97.92.9, Dst = 10.200.113.202 10.97.92.9 5 ms !<13> 
ICMP Receive: communication-filter-forbidden(Type=3, Code=13), 
Src = 10.97.92.9, Dst = 10.200.113.202 4 ms !<13> 
ICMP Receive: communication-filter-forbidden(Type=3, Code=13), 
Src = 10.97.92.9 , Dst = 10.200.113.202   
The device returns type=3 code=13 packet. It means that packets are discarded and communication is forcibly denied because of configuring ACL filter.
Suggestions
Null

END