Huawei S Series - Page 22

S Series Switches
iStack Technology White Paper
2 Technology Description
Issue 01 (2013-05-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
18
Figure 2-7, Figure 2-8, and Figure 2-9 illustrate stack packet exchange during the removal of
the master switch, standby switch, and slave switch respectively.
Figure 2-7 Removing the master switch
SwitchA
（Master）
SwitchB
(StandBy)
SwitchC
(Slave)
Hehuan packet
Reselect the standby switch
Detects that the stack port goes
Down, deletes neighbor information,
and becomes the new master switch
SPDU
Notifies SwitchC that it is the new
standby switch
HIGIG packet
Nbr Lost