User's Manual

79-4
status information. With the help of VSF, if one of the virtual switch members is out of order, no need
to continous the reconstringency of L2/L3 can restart the virtual switch recover in short time.
3. VSF can expand the system bandwidth capacity
In the vsf switch can activate all the L2 bandwidth, can carry on the equilibrium of load on the
multiple members of VSF when expanding the bandwidth.
79.1.2 Basic Concept
(1) Role
Each of the facilities in the VSF is called member facility. According to the function of each member facility, will
divide into 2 different roles:
Master: Responds for manage entire VSF
Standby Master: Is the standby member of VSF, as the Master backup facility for operation. When the
Master is out of order, the systems will handover to Standby Master automatically to
perform the original job of Master.
Slave: The member facilities that are other than Master and Standby Master in VSF.
Master, Standby Master and Slave are produced by election. For entire VSF, it can only have one
Master, one Standby Master, other members should be Slave.
(2) VSF port
It is a logic port which is particular use for VSF. It divides into vsf-port1 and vsf-port2, need to colligate
with the VSF physical port and then become efficitive.
(3) VSF physical port
It is the facility that is used for physical connection port for VSF. VSF physical port can be VSF specific
port, Ethernet port or light port (different equipment and the model will using different port, please equipt it
according to the virtual situtation). Usually, Ethernet port and light port respond for transmitting
operation message. After they colligate with the VSF port, they will become the VSF physical port. They
will use for transmitting the message within the members. The message including VSF related
negotiation message and the operation message that needs to cross over different members.
(4) Merge
Two different VSF operation separately, throughout the physical connection and configuration, it will
become one VSF. This process is called merge.
Figure 83-4: Merging of VSF
(5) Split
One VSF is formed. Due to the VSF link is out of order, it will cause the facilities that are border upon