User's Manual

Configuration Guide of XGS-5240-Series
74-5
eed to continous the reconstringency of L2/L3 can restart the virtual switch recover in short time. T
he active mode must be used for port group.
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.
74.1.2 Basic Concept
(1) Role
Each of the facilities in the VSF is called member facility. According to the function of each mem
ber 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. Wh
en 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 on
e 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 c
olligate 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, pl
ease equipt it according to the virtual situtation). Usually, Ethernet port and light port respond for tr
ansmitting operation message. After they colligate with the VSF port, they will become the VSF physi
cal 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 wi
ll become one VSF. This process is called merge.
Fig 1-4 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 borde
r upon cannot connect together physically. Therefore, one stracking will divide into two stracking. This
process is called split.