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Sent: Displays the det
ails of the packets transmitted on the port.
Broadcast: Displays the number of good broadcast packets received o
r
transmitted on the port. The error frames are not counted in.
Multicast: Displays the number of good multicast packets received o
r
transmitted on the port. The error frames are not counted in.
Unicast: Displays the number of good unicast packets received o
r
transmitted on the port. The error frames are not counted in.
Alignment Errors: Displays the number of the received packets that have a bad
Frame Check Sequence (FCS) with a non-integral octet
(Alignment Error) and have a bad FCS with an integral octet
(CRC Error). The length of the packet is between 64 bytes and
1518 bytes.
UndersizePkts: Displays the number of the received packets (excluding erro
r
packets) that are less than 64 bytes long.
Pkts64Octets: Displays the number of the received packets (including erro
r
packets) that are 64 bytes long.
Pkts65to127Octets: Displays the number of the received packets (including erro
r
packets) that are between 65 and 127 bytes long.
Pkts128to255Octets: Displays the number of the received packets (including erro
r
packets) that are between 128 and 255 bytes long.
Pkts256to511Octets: Displays the number of the received packets (including erro
r
packets) that are between 256 and 511 bytes long.
Pkts512to1023Octets: Displays the number of the received packets (including erro
r
packets) that are between 512 and 1023 bytes long.
PktsOver1023Octets: Displays the number of the received packets (including erro
r
packets) that are more than 1023 bytes long.
Collisions: Displays the number of collisions experienced by a port during
packet transmissions.
5.4 MAC Address
The main function of the switch is forwarding the packets to the correct ports based on the
destination MAC address of the packets. Address Table contains the port-based MAC address
information, which is the base for the switch to forward packets quickly. The entries in the Address
Table can be updated by auto-learning or configured manually. Most the entries are generated and
updated by auto-learning. In the stable networks, the static MAC address entries can facilitate the
switch to reduce broadcast packets and enhance the efficiency of packets forwarding remarkably.
The address filtering feature allows the switch to filter the undesired packets and forbid its
forwarding so as to improve the network security.
The types and the features of the MAC Address Table are listed as the following:
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