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Sample Task—Ping Host
Figure 108 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 108).
- 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 Step 2 through Step 5 to ping destination
host 2.2.2.2.
Figure 108: Ping Host Diagnose Page
Figure 109 displays the results
of a successful ping in the main pane, and Table 160 provides a summary of
the ping host results and output.
Figure 109: Successful Ping Host Results
Page
Table 160: 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 110 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 110: Unsuccessful Ping Host
Results Page
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