16
APCD-LM047-2.1
2: Setup Menu
The MAC Summary shows the breakdown for transmitted and received packets and payloads.
All values are expressed as a count and percentage of total packets or payloads. A payload is
a packet with real data.
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Transmitted Payloads: shows how many payloads were successfully transmitted the
1st time or needed to be sent a 2nd, 3rd or 4th time to get through, as well as how
many packets failed to get through at all. Note that traffic must be sent from the end
user PC in order to generate enough traffic to be meaningful. The rules of thumb are:
•
1OK should be at least 90%, otherwise the link may not be good enough.
•
The 1OK packets should be 1000 or more to be a reasonable representation
of the link.
•
Received packets: shows the classification of all packets received from the CCU,
whether they contain payloads or not and whether they are directed to this modem or
not. This data is for information only and does not indicate the quality of the link for the
installer.
•
Received packets with payloads: shows the disposal of the received packets with
payloads. FCS Error from Peer shows the error rate for all packets from the CCU,
whether directed to this modem or not. An error rate above 5% could indicate a poor
link. The others are for payloads directed to this modem or broadcast to all modems.
Only the delivered payloads are successfully received. The rule of thumb here is that
the delivered payloads should be better than 95%, otherwise the link is suspect.