Skspruce Technologies Inc. WIA3200 Manuel D’Utilisation

 

JadeOS provides layer-2 network service. This chapter will describe bridge forward-
ing and port mirror. 

Bridge is used for the interconnection among two or more Layer-2 network and data 
frame forwarding based on MAC address of Layer-2 network. 

Bridge supports MAC address learning. Bridge will create one bridge table based on 
source MAC address when one data frame from one MAC address first going through 
bridge. Bridge table is indexed by MAC address, and it will record the physical inter-
face connected to this host. Thereafter, when data frame from the same MAC address 
come to this host again, it will be sent to this physical interface so that to avoid send-
ing broadcast message to all interfaces. 

Bridge forwarding is based on bridge table, each MAC address is corresponding to 
one table. Bridge table will be automatically deleted if there is no data frame from the 
same MAC address going through this bridge table for a while. When there is data 
frame coming to this bridge after a while, bridge will learn MAC address again. 
Besides dynamic learning, bridge table supports static configuration, which is called 
static table. 

Bridge configuration is to add several physical interfaces to the same VLAN. In the 
same VLAN, several interfaces form a bridge, the communication among the inter-
faces is bridge forwarding. 
Please refer to chapter 4.2 and chapter 4.3 for more information. 

Dynamic table is generated by system learning. System will look up bridge table 
when receiving message. If no bridge table is available, system will automatically 
generate a bridge table based on the source MAC address, VLAN ID, and the inter-
face of message. 
To inquiry bridge table, use show datapath bridge table command. 
For example: 

(JadeOS) #show datapath bridge table