SMC Networks SMC TigerAccess SMC7824M/FSW - Manual (Page 39)

I
NTRODUCTION
1-5
Storm Control – Broadcast and multicast storm suppression prevents
traffic from overwhelming the network. When enabled on a port, the level
of traffic passing through the port is restricted. If traffic rises above a
pre-defined threshold, it will be throttled until the level falls back beneath
the threshold.
Static MAC 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.
IP Address Filtering – Access to unsecure ports can be controlled using
DHCP Snooping, and IP Source Guard which filters ingress traffic based
on static IP addresses and addresses stored in the DHCP Snooping table.
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 16K 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 32 MB
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. When there are multiple physical paths between segments,