Download ZyXEL Communications VES-1012 - User`s guide

VES-1000 Series Ethernet Switch
Table 20-2 Port Statistics
FIELD
DESCRIPTION
Tx256To511
This is the number of frames (including bad frames) transmitted that were between 256
and 511 octets in length.
Tx512To1023
This is the number of frames (including bad frames) transmitted that were between 512
and 1023 octets in length.
Tx1024ToMAX
This is the number of frames (including bad frames) transmitted that were between 1024
and above in length.
RxOctetsMSB
Upper 32-bit count of the number of received octets of data (including those in bad
frames).
RxOctetsLSB
Lower 32-bit count of the number of received octets of data (including those in bad
frames).
TxOctetsMSB
Upper 32-bit count of the number of transmitted octets of data (including those in bad
frames).
TxOctetsLSB
Lower 32-bit count of the number of transmitted octets of data (including those in bad
frames).
RxFragments
This is the number of frames received that were less than 64 octets long and with either a
CRC error or an alignment error.
RxJabbers
This is the number of frames received that were greater than the maximum octets
(specified for the system by the configuration software) long and with either a CRC error
or an alignment error.
RxAlignErrors
This is the number of frames received that were of the proper size but with a CRC error
and non-integral number of octets.
RxSymbolErrors
This is the number of frames received that were of the proper size but experienced
symbol error during frame reception.
SecurityDrops
This is the number of good frames that were dropped because the violation of the switch
security rules.
VLANDrops
This is the number of good frames that were dropped because the specified destination
port does not belong to the VLAN domain.
UndersizedPkt
This is the number of frames received that were less than 64 octets long and without any
CRC or alignment errors.
OversizedPkt
This is the number of frames received that were greater than the maximum octets
(specified for the system by the configuration software) long and without any CRC error or
alignment errors.
TxOversizePkt
This is the number of frames transmitted that were greater than the maximum octets
(specified for the system by the configuration software) long and without any CRC or
alignment errors.
VDSL
Upstream/Downstrea
m status
The following parameters apply to both upstream and downstream VDSL.
Constellation
Constellation shows the modulation method and speed. The constellations are QAM 4,
QAM 8, QAM 16, QAM 64, QAM 256 where QAM (Quadrature Amplitude Modulation)
defines how many bits there are per symbol; for example QAM 4 means 2 bits per symbol
(22), QAM 8, 3 bits (23) per symbol and so on.
Int (Interpolation) defines how fast the symbols go through the line. It is equal to 25.0MHz
/ baud rate, so for example, Int 8 = 25.0 / 8 Mbaud.
System Maintenance 1
20-5