Tektronix SPG8000A, Руководство пользователя

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128 SPG8000A User Manual
operation and will overwrite all user data. Click OK to continue or Cancel
to cancel the procedure.
When you click OK, t he instrument connects to the Network to download the
latest firmware. Follow the on - screen instructions to download the firmware.
PTP Network Settings Submenu
Use this submenu to set the Network parameters on the PTP connection. Figur e 42
shows an example of the PTP Network Settings submenu.
Figure 42: PTP Network Settings submenu
This menu also allows setting the DSCP level on the PTP messages. For most
situations, the default value of 0 for noncritical General messages and 46 for the
Event messages is appropriate. If you are using the AES67 profile, it may help to
set both message types to the maximum value of 56. Changing these values resets
all of the PTP systems and will disrupt the PTP operation for about 35 seconds.
This menu also allows control of the internal switch. The RJ45 and SFP ports can
be configured as fully cross - linked, isolated or to mirror the RJ45 to the SFP. For
most applications the Isolated setting is appropriate. This setting allows the two
ports to both access PTP functions and not allow cross traffic. If you want the
ports to work like a normal switch, use the Cross - linked setting. In this setting, all
traffic into either port will echo out the other port. In Mirror mode, all the traffic
in and out of the RJ45 port will be echoed to the SFP port. This is useful if you
need to use Wireshark on a Unicast system. In this case, hook the Wireshark PC
to the SFP port and use the internal switch to mirror the traffic.
The PTP Network Settings submenu contains these sections:
•
PTP MAC Address
• Switch Mode
• DSCP Event Message Priority
•
DSCP General Message Priority