WAGO-ETHERNET-Zubehör 852
Enhanced Features
45
852-1305 8/4-Port 100BASE-T/1000BASE-SX/LX
Manual
1.1.0
•
If the switch does not already know the port for this MAC address, it
forwards the frame to all ports. “Port Flooding” (forwarded too often to
all ports) can lead to network congestion.
•
If the switch already knows the port for this MAC address and the
destination port is the same as the input port, the frame is filtered.
Figure 10: MAC Address Table Flowchart
7.1.4.1 Static MAC Settings
Static MAC Addresses
A static MAC address is an address that has been manually entered in the MAC
address table. Static MAC addresses have no “Age Time”. When you set up rules
for static MAC addresses, you are setting static MAC addresses for a port. This
may reduce data transmission needs.
7.1.4.2 Refusal MAC Settings
This type of MAC address entries is configured manually. The switch ignores
packets that have such MAC addresses as the source or destination contained in
“Blackhole” MAC address entries. “Blackhole” entries are configured to filter
frames with specific source or destination MAC addresses.