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Using the J-Web Ping Host Tool

You can ping a host to verify that the host can be reached over the network. The output is useful for diagnosing host and network connectivity problems. The Services Router sends a series of ICMP echo (ping) requests to a specified host and receives ICMP echo responses.

Alternatively, you can use the CLI ping command. (See Pinging Hosts from the CLI.)

To use the ping host tool:

Select Diagnose>Ping Host from the task bar.
Next to Advanced options, click the expand icon (see Figure 31).
Enter information into the Ping Host page, as described in Table 193.
The Remote Host field is the only required field.
Click Start.
The results of the ping operation are displayed in the main pane (see Figure 32). If no options are specified, each ping response is in the following format:

bytes bytes from ip-address: icmp_seq=number ttl=number time=time
Table 194 summarizes the output fields of the display.
To stop the ping operation before it is complete, click OK.

Figure 31: Ping Host Page

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Table 193: J-Web Ping Host Field Summary

Field	Function	Your Action
Remote Host	Identifies the host to ping.	Type the hostname or IP address of the host to ping.
Advanced Options
Don't Resolve Addresses	Determines whether to display hostnames of the hops along the path.	To suppress the display of the hop hostnames, select the check box. To display the hop hostnames, clear the check box.
Interface	Specifies the interface on which the ping requests are sent.	From the list, select the interface on which ping requests are sent. If you select any, the ping requests are sent on all interfaces.
Count	Specifies the number of ping requests to send.	From the list, select the number of ping requests to send.
Don't Fragment	Specifies the Don't Fragment (DF) bit in the IP header of the ping request packet.	To set the DF bit, select the check box. To clear the DF bit, clear the check box.
Record Route	Sets the record route option in the IP header of the ping request packet. The path of the ping request packet is recorded within the packet and displayed in the main pane.	To record and display the path of the packet, select the check box. To suppress the recording and display of the path of the packet, clear the check box.
Type-of-Service	Specifies the type-of-service (TOS) value in the IP header of the ping request packet.	From the list, select the decimal value of the TOS field.
Routing Instance	Name of the routing instance for the ping attempt.	From the list, select the routing instance name.
Interval	Specifies the interval, in seconds, between the transmission of each ping request.	From the list, select the interval.
Packet Size	Specifies the size of the ping request packet.	Type the size, in bytes, of the packet. The size can be from 0 through 65468. The device adds 8 bytes of ICMP header to the size.
Source Address	Specifies the source address of the ping request packet.	Type the source IP address.
Time-to-Live	Specifies the time-to-live (TTL) hop count for the ping request packet.	From the list, select the TTL.
Bypass Routing	Determines whether ping requests are routed by means of the routing table. If the routing table is not used, ping requests are sent only to hosts on the interface specified in the Interface box. If the host is not on that interface, ping responses are not sent.	To bypass the routing table and send the ping requests to hosts on the specified interface only, select the check box. To route the ping requests using the routing table, clear the check box.

Figure 32: Ping Host Results Page

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