NETGEAR 7200 Series Layer 2 Managed Switch Software User Manual
Page 48
User Manual for the NETGEAR 7200 Series Layer 2 Managed Switch Software
7-6
Switching Commands
202-10010-01
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.
Received Packets not forwarded
Total - a count of valid frames received which were discarded (i.e. filtered) by
the forwarding process.
Local Traffic Frames - the total number of frames dropped in the forwarding
process because the destination address was located off of this port.
802.3x Pause Frames Received - a count of MAC Control frames received on
this interface with an opcode indicating the PAUSE operation. This counter does
not increment when the interface is operating in half-duplex mode.
Unacceptable Frame Type - the number of frames discarded from this port due
to being an unacceptable frame type.
VLAN Membership Mismatch - the number of frames discarded on this port
due to ingress filtering.
VLAN Viable Discards - the number of frames discarded on this port when a
lookup on a particular VLAN occurs while that entry in the VLAN table is being
modified, or if the VLAN has not been configured.
Multicast Tree Viable Discards - the number of frames discarded when a
lookup in the multicast tree for a VLAN occurs while that tree is being
modified.
Reserved Address Discards - the number of frames discarded that are destined
to an IEEE 802.1 reserved address and are not supported by the system.
Broadcast Storm Recovery - the number of frames discarded that are destined
for FF:FF:FF:FF:FF:FF when Broadcast Storm Recovery is enabled.