CANOGA PERKINS 9145EMP NID Software Version 3.1 User Manual

Page 57

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Diagnostics

9145EMP NID Software User’s Manual

Latency/Jitter Test

45

used. Any address can be used with the Manager IP since it has access to the Default
Gateway.

If the From IP Address is specified as the Test IP or the Aux IP, and the To IP Address is
not located in the matching subnet, the destination is unreachable. An error message is
displayed when the Start Test command is given.

3. Test C-VLAN The test packets will carry this VLAN Tag. The Test VLAN can only be

changed if the From IP Address is set to the Test IP, or the if Aux Allow Any VLAN is
enabled:

NOTE: The Test C-VLAN tagging configuration (3) can only be changed based

on the Source IP address configuration (2).

4. Test Packets per sec The number of packets that will be sent for every second the test

runs. Settings are: 1, 2, 5, 10, 20, 50 or 100.

5. Packet Timeout sec (1 - 10) The packet timeout for this test, from 1 to 10 seconds. If a

response is not received within this time limit, the packet will be considered dropped.

6. Packet Priority The Packet Priority Code Point (PCP) from 0 to 7, with 0 being the high-

est priority.

7. Packet DSCP Code (0 - 63) The Differentiated Services Code Point (DSCP) code used

to classify packets in a Diffserv network. Other network devices that support Diffserv use
the DSCP code in the IP header to select a per hop behavior (PHB) for the packet and
provide the appropriate QoS treatment.

8. Packet DF Bit The DF (Don’t Fragment) Bit is an identifier in the packet that determines

if this packet can be fragmented to smaller packets.

9. Test Duration min:sec The amount of time the test will run in minutes and seconds. A

setting of 0 will allow the test to run forever.

10. Min Test Payload Size (40 - 9950) The minimum test size, in bytes. The 9145EMP sends

test packets ranging in size from the minimum packet setting to the maximum packet set-
ting (sweep), if they are different. The minimum payload size must be less than, or equal
to, the maximum payload size. If a sweep is being performed, the size will be incremented
by 1 byte for each message sent until the maximum test payload size is reached, then
decremented by 1 byte for each message sent until the minimum payload size is reached,
then repeated as necessary.

11. Max Test Payload (40 - 9950) The maximum test payload size, in bytes. The maximum

payload size must be equal to, or greater than, the minimum payload size.

NOTE: If the DF Bit is clear, the actual maximum packet size is 8192. The DF Bit

must be set for oversized packets greater than 1518 (payload size greater
than 1472) to be sent or the packet will be fragmented (sent as multiple
packets of size 1518).

12. Start/Stop Test Start and Stop testing.

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