User Guide

OmniAccess SafeGuard OS Administration Guide
85
Chapter 2: Accessing and Managing the System
Packets Received
Successfully
Total – The total number of packets received that were without
errors.
Unicast Packets Received – The number of subnetwork-unicast
packets delivered to a higher-layer protocol.
Multicast Packets Received – The total number of good packets
received that were directed to a multicast address. Note that
this number does not include packets directed to the broadcast
address.
Broadcast Packets Received – The total number of good
packets received that were directed to the broadcast address.
Note that this does not include multicast packets.
Packets Received with MAC
Errors
Total – The total number of inbound packets that contained
errors preventing them from being deliverable to a higher-layer
protocol.
Jabbers Received – The total number of packets received that
were longer than 1518 octets (excluding framing bits, but
including FCS octets), and had either a bad Frame Check
Sequence (FCS) with an integral number of octets (FCS Error) or
a bad FCS with a non-integral number of octets (Alignment
Error). Note that this definition of jabber is different than the
definition in IEEE-802.3 section 8.2.1.5 (10BASE5) and section
10.3.1.4 (10BASE2). These documents define jabber as the
condition where any packet exceeds 20 ms. The allowed range
to detect jabber is between 20 ms and 150 ms.
Fragments/Undersize Received – The total number of packets
received that were less than 64 octets in length (excluding
framing bits but including FCS octets).
Alignment Errors – The total number of packets received that
had a length (excluding framing bits, but including FCS octets)
of between 64 and 1518 octets, inclusive, but had a bad Frame
Check Sequence (FCS) with a non-integral number of octets.
Rx FCS Errors – The total number of packets received that had a
length (excluding framing bits, but including FCS octets) of
between 64 and 1518 octets, inclusive, but had a bad Frame
Check Sequence (FCS) with an integral number of octets
Overruns – The total number of frames discarded as this port
was overloaded with incoming packets, and could not keep up
with the inflow.
Table 10 Ethernet Interface Options (continued)
Option Description