D
ESCRIPTION
OF
S
OFTWARE
F
EATURES
1-5
Static Addresses – A static address can be assigned to a specific interface
on this switch. Static addresses are bound to the assigned interface and will
not be moved. When a static address is seen on another interface, the
address will be ignored and will not be written to the address table. Static
addresses can be used to provide network security by restricting access for
a known host to a specific port.
IEEE 802.1D Bridge – The switch supports IEEE 802.1D transparent
bridging. The address table facilitates data switching by learning addresses,
and then filtering or forwarding traffic based on this information. The
address table supports up to 8K addresses.
Store-and-Forward Switching – The switch copies each frame into its
memory before forwarding them to another port. This ensures that all
frames are a standard Ethernet size and have been verified for accuracy
with the cyclic redundancy check (CRC). This prevents bad frames from
entering the network and wasting bandwidth.
To avoid dropping frames on congested ports, the switch provides 4 Mbits
for frame buffering. This buffer can queue packets awaiting transmission
on congested networks.
Spanning Tree Algorithm – The switch supports these spanning tree
protocols:
Spanning Tree Protocol (STP, IEEE 802.1D) – This protocol provides
loop detection and recovery by allowing two or more redundant
connections to be created between a pair of LAN segments. When there
are multiple physical paths between segments, this protocol will choose a
single path and disable all others to ensure that only one route exists
between any two stations on the network. This prevents the creation of
network loops. However, if the chosen path should fail for any reason, an
alternate path will be activated to maintain the connection.
Rapid Spanning Tree Protocol (RSTP, IEEE 802.1w) – This protocol
reduces the convergence time for network topology changes to 3 to 5
seconds, compared to 30 seconds or more for the older IEEE 802.1D STP
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