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Quidway S5700 Series Ethernet Switches
Configuration Guide - Device Management
Replacing a member switch requires that the stack cables connecting the replaced switches to
other switches be removed.
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Switchover Between the Master and Standby Switches
After a stack system is created, the standby switch automatically becomes the master switch if
the master switch is faulty or exits from the stack system. The new master switch specifies the
new slave switch and data is synchronized on the master and slave switches.
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Frequent switchovers may cause split of the stack.
Combining Two Stack Systems
If two stack systems are combined, a new master switch is elected. The running time of the two
stack systems is compared and is accurate to minutes. The stack system that has a long running
time is of a higher priority. If the running time is the same, the election mode in the setup of the
stack system is used for electing the master switch. In one stack system, the roles, configurations,
and services of the switches keep unchanged. In the other stack system, all the switches restart
and join the combined stack system as slave switches. The master switch reassigns stack IDs to
these slave switches and synchronizes its configurations to these slave switches. In addition,
services in this stack system are interrupted.
Issue 01 (2011-07-15)
If the master switch is replaced, the standby switch becomes the master switch, and then
specifies another member switch as the standby switch and synchronizes data to the new
standby switch.
If the standby switch is replaced, the master switch specifies another member switch as the
standby switch and synchronizes data to the new standby switch.
After a stack system is created for the first time, the MAC address of the stack system is
the MAC address of the master switch. When the master switch is faulty or quits the stack
system, the MAC address of the stack system is immediately switched to be that of the
newly-elected master switch if the function of the delay in switching the MAC address of
the stack system is disabled. By default, the MAC address switchover is enabled and the
delay for switchover is 10 minutes.
When a stack system is created, the MAC address of the stack system is switched to be that
of the newly-elected master switch, if the master switch is faulty or quits the stack system,
the stack system is configured with the MAC address switchover time, and the quitting
switch does not rejoin the stack within the switchover timeout interval. If the quitting switch
rejoins the stack before the switchover timer expires, the switch becomes a slave and the
MAC address of the stack system remains unchanged. In this case, the MAC address of the
stack system is the MAC address of a slave switch.
When a slave switch quits a stack system, the MAC address of the stack system is switched
to be that of the master switch, if the MAC address of the stack system is the same as that
of the quitting slave switch and the quitting slave switch does not rejoin the stack after the
switchover timer times out.
CAUTION
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Copyright © Huawei Technologies Co., Ltd.
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