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Sample Task—Ping Host
Figure 28 shows a sample Ping Host page. In
this example, you are sending ping requests are sent to two destination hosts—10.10.2.2 and 2.2.2.2.
The echo requests reaches 10.10.2.2 and does not reach 2.2.2.2.
To ping the host:
- Select Diagnose>Ping Host from
the task bar.
- Next to Advanced options, click
the expand icon (see Figure 28).
- Next to Remote Host, typ 10.10.2.2 to specify
the host's IP address.
- Retain the default values in the following fields:
- Interface—any—Ping requests to be sent on
all interfaces.
- Count—10—Number of ping requests to send.
- Type-of-Service—0—TOS value in the IP header
of the ping request packet.
- Routing Instance—default—Routing instance
name for the ping attempt.
- Interval—1—Interval, in seconds, between
the transmission of each ping request.
- Packet Size—56—Size of the ping request packet
in bytes. The routing platform adds 8 bytes of ICMP header to this size before
sending it.
- Time-to-Live—32—TTL hop count for the ping
request packet.
- Click Start.
- Repeat Steps 2 through 5 to ping destination host 2.2.2.2.
Figure 28: Ping Host Diagnose Page
Figure 29 displays the results of
a successful ping in the main pane, and Table 37 provides
a summary of the ping host results and output.
Figure 29: Successful Ping Host Results Page
Table 37: J-Web Ping
Host Results and Output Summary
|
Ping Host Result
|
Description
|
|
64 bytes from
|
Size of ping response packet, which is equal to the default value in
the Packet Size box (56), plus 8.
|
|
10.10.2.2
|
IP address of the destination host that sent the ping response packet.
|
|
icmp_seq=number
|
Sequence numbers of packets from 0 through 9. You can use this value
to match the ping response to the corresponding ping request.
|
|
ttl=56
|
Time-to-live hop-count value of the ping response packet.
|
|
100.834 ms
|
Total time between the sending of the ping request packet and the receiving
of the ping response packet, in milliseconds. This value is also called round-trip
time.
|
|
10 packets transmitted, 10 packets received, 0% packet loss
|
Ping packets transmitted, received, and lost. 10 ping requests (probes)
were sent to the host, and 10 ping responses were received from the host.
No packets were lost.
|
|
100.215/104.397/120.158/7.831 ms
|
-
100.215—Minimum round-trip time
-
104.397—Average round-trip time
-
120.158—Maximum round-trip time
-
7.831—Standard deviation of the round-trip times
-
ms—milliseconds
|
Figure 30 shows the output of an
unsuccessful ping. There can be different reasons for an unsuccessful ping.
This result shows that the local router did not have a route to the host 2.2.2.2 and
thus could not reach it.
Figure 30: Unsuccessful Ping Host Results
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