CANOGA PERKINS 9145ELB NID Software Version 4.01 - Manual (Page 60)

9145ELB NID Software User’s Manual Diagnostics
Latency/Jitter Test
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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 VLANs Test packets carry this sequence of VLAN Tags. If one specific tag is set to
0, it is not included in the frame. For example, 100/ 0/ 20 identifies a double tagged frame
(S-C tagged), in which the T-Tag is not present.
The Test VLAN can only be changed if
• The source IP address (attribute 2) is the Test IP address of the system. In this
case only the C-VLAN is configurable.
• The source IP address (attribute 3) is the Aux IP address of the system, and the
AUX IP configuration has the “Allow all VLANs” flag enabled. In this case all the
VLANs for which the encapsulation is enabled can be configured.
4. Test Packets per sec The number of packets per second that will be generated by the
test. 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 lost.
6. Packet Priority The Packet Priority Code Point (PCP) from 0 to 7, with 0 being the lowest
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 9145ELB sends
test packets ranging in size from the minimum packet setting to the maximum packet
setting (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.