Juniper Networks J-Series manual Traceroute Results and Output Summary

Chapter 12: Using Services Router Diagnostic Tools

Table 112: Traceroute Field Summary (continued)

Field	Function
Resolve AS	Determines whether the autonomous system (AS)
Numbers	number of each intermediate hop between the
	router and the destination host is displayed.

Your Action

■To display the AS numbers, select the check box.

■To suppress the display of the AS numbers, clear the check box.

Traceroute Results and Output Summary

Table 113 on page 225 summarizes the output in the traceroute display. If the Services Router receives no responses from the destination host, review the list after Table 113 on page 225 for a possible explanation.

Table 113: J-Web Traceroute Results and Output Summary

Field	Description
hop-number	Number of the hop (router) along the path.
host	Hostname, if available, or IP address of the router. If the Don't Resolve Addresses check box is selected,
	the hostname is not displayed.
ip-address	IP address of the router.
as-number	AS number of the router.
time1	Round-trip time between the sending of the first traceroute packet and the receiving of the corresponding
	Time Exceeded packet from that particular router.
time2	Round-trip time between the sending of the second traceroute packet and the receiving of the corresponding
	Time Exceeded packet from that particular router.
time3	Round-trip time between the sending of the third traceroute packet and the receiving of the corresponding
	Time Exceeded packet from that particular router.

If the Services Router does not display the complete path to the destination host, one of the following explanations might apply:

■The host is not operational.

■There are network connectivity problems between the Services Router and the host.

■The host, or a router along the path, might be configured to ignore ICMP traceroute messages.

■The host, or a router along the path, might be configured with a firewall filter that blocks ICMP traceroute requests or ICMP time exceeded responses.

■The value you selected in the Time Exceeded box was less than the number of hops in the path to the host. In this case, the host might reply with an ICMP error message.

Tracing Unicast Routes from the J-Web Interface ■ 225