Huawei S Series White Paper page 23

S Series Switches
iStack Technology White Paper
Figure 2-8 Removing the standby switch
SwitchA
(Master)
Detects that the
stack port goes
Down, deletes
neighbor
information, and
recalculates
topology
information
Discards the
packet and does
not process it
Reselect the
standby switch
Running state
Figure 2-9 Removing a slave switch
SwitchD
(Slave)
Nbr Lost
Hehuan packet
HIGIG packet
Running state
Issue 01 (2013-05-25)
Hehuan packet
HIGIG packet
Nbr Lost
Notifies SwitchC that it becomes
the new standby switch
SwitchA
(Master)
Delete lost neighbor
information
Recalculates
topology
information
HIGIG packet
Running state
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Copyright © Huawei Technologies Co., Ltd.
SwitchB
(Standby)
SwitchB
(Standby)
Nbr Lost
Hehuan packet
Running state
2 Technology Description
SwitchC
(Slave)
Running state
Switch C
(Slave)
SPDU times out and
the device is restarted
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