DHCP SCREEN
Pressing the DHCP function key in the Link Screen presents the DHCP Screen
and begins the DHCP client-server test.
Note: The MAC Address of the Net-Ping may have to
be added to the Access List of the DHCP Server for
the Net-Ping messages to be accepted - see your
System Administrator for requirements.
The Net-Ping transmits a “Discover” message to locate a DHCP server. If no
DHCP Server responds to the message within the DHCP Timeout period (see Timeout
Setup), the Net-Ping will retransmit the “Discover” message up to three more times. If
no DHCP Server responds after the fourth attempt,
“No Response” is displayed.
Pressing the Repeat
function key restarts the DHCP discover process.
When a DHCP Server responds to the message, the
Net-Ping displays “Server Found” the IP Address of the Server and the IP Address
assigned to the Net-Ping.
Pressing the INFO key displays the Gateway IP Address and the Subnet Mask
used with the IP Address assigned by the DHCP Server. Note: If the DHCP Server
does not provide the Gateway IP Address, a 0.0.0.0 IP Address is displayed.
Pressing the PING key while in the DHCP Client mode presents the PING screen
with a “DHCP” message displayed and the IP Address
of the Gateway. If Gateway information is not
available, the DHCP Server IP Address is shown.
Pressing the PING key from the IP Ping Screen transmits a PING that uses the IP
Address, Gateway Address and Subnet Mask provided by the DHCP Server instead of
the IP Address, Gateway Address and Subnet Mask that were previously entered and
stored in the Net-Ping. The Gateway IP Address is automatically entered as the
address to be PINGed (or the DHCP Server address when Gateway information is not
available). Alternatively, a new IP Address can be entered or the Up/Down cursor key
can be used to select a previously stored address. Pressing the EXIT key returns the
Net-Ping back to the LINK Screen and clears the DHCP Server assigned addresses
and mask. Pressing the Setup key also clears the DHCP Server assigned information
and transmits a DHCP release packet to the DHCP server so that the IP address is
available for reassignment.
Note: When the IP address of the device being PINGed is in the same subnet/VLAN as
the IP address of the Net-Ping, the Subnet Mask can be “ON” or “OFF” and a Gateway
IP address is not required. When the IP address is in a different subnet/VLAN, the
Subnet Mask must be “ON” with the mask entered and the IP address of the Gateway
must be entered. (See Subnet Mask Setup and Gateway Setup).
CONTINUOUS PING
When the Net-Ping is configured to PING continuously (See Ping Count Setup),
the letter “C” is displayed to the left of “Name” in the PING Screen. Pressing the PING
function key displays the number of PINGs that have
been sent and the percent of the PINGs with No
Response or that had corrupted data. Pressing the
Info function key displays the PING Address and the
running average of the Round Trip Times for all PINGs that received a response.
Pressing the Info function key again displays the PING Address and the count of
PINGS with no response.
LIST SCREEN
When “IP List” is selected and the PING function key is pressed, each IP address
stored in the IP List (see IP List Setup) is PINGed in
turn. The same “Wait” and “No Response” messages
are displayed as described above. After completing
the PING of the last stored IP address, the IP List
Reponse screen is shown.
LIST RESPONSE SCREEN
The List Response screen shows the results of the PING to each of the stored IP
addresses. The Up/Down cursor key is used to scroll
through each IP address with Round Trip Time, Data
status and MAC address presented for IP addresses that
are found or “No Response” for IP addresses that did
not respond within the Timeout period. Times less than one second are shown in milli-
seconds (ms).
RANGE SCREEN
When “Range” is selected, the Range screen is displayed with start and stop IP
addresses. The first three octets of the start and stop address must be the same and
the fourth octet defines the range from one to a
maximum of 255 IP addresses.
Pressing the PING
function key PINGs all the addresses in the range
simultaneously. Each PING response can be viewed
by pressing the Up/Down cursor key. Holding the key will cause the responses to scroll
faster.
PING RESPONDER MODE
The Net-Ping will respond to a PING request that is sent to the unit’s IP address.
When the unit is in the LINK Screen, a PING to the
Net-Ping IP address presents the PING Received
screen. The Ping Received screen shows the IP and
MAC addresses of the PING source.
