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Alignment Errors:
Displays the number of the received packets that have a bad Frame
Check Sequence (FCS) . The length of the packet is from 64 bytes
to maximal bytes of the jumbo frame(usually 10240 bytes).
UndersizePkts:
Displays the number of the received packets (excluding error
packets) that are less than 64 bytes long.
Pkts64Octets:
Displays the number of the received packets (including error
packets) that are 64 bytes long.
Pkts65to127Octets:
Displays the number of the received packets (including error
packets) that are between 65 and 127 bytes long.
Pkts128to255Octets:
Displays the number of the received packets (including error
packets) that are between 128 and 255 bytes long.
Pkts256to511Octets:
Displays the number of the received packets (including error
packets) that are between 256 and 511 bytes long.
Pkts512to1023Octets:
Displays the number of the received packets (including error
packets) that are between 512 and 1023 bytes long.
PktsOver1023Octets:
Displays the number of the received packets (including error
packets) that are over 1023 bytes.
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:
Type
Configuration
Way
Aging out
Being kept after
reboot
(if the configuration
is saved)
Relationship between the
bound MAC address and
the port
Static
Address Table
Manually
configuring
No
Yes
The bound MAC address
can not be learned by the
other ports in the same
VLAN.
Dynamic
Address Table
Automatically
learning
Yes
No
The bound MAC address
can be learned by the other
ports in the same VLAN.
Filtering
Address Table
Manually
configuring
No
Yes
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