Member Specification Of Switch Stack System; Stack System Main Device Election And Renewed Election - Zte ZXR10 5900 Series User Manual

ZXR10 5900/5200 Series User Manual (Basic Configuration Volume)
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Member Specification of Switch
Stack System
At most 9 devices compose a stack system by stack port. Each
stack system only has one main device.
If an independent device enables stack it is stack system itself and
the main device is itself. If two stack systems can be combined
together an independent switch can be added into an existing stack
system to increase the member number of this stack system.
If a stack member in the stack system is replaced by the switch
with the same model and the member ID of this switch is same as
that of the original stack member, this switch will implement the
same configuration that is same as the configuration of replaced
stack member.
When two running stack systems combine together, a main de-
vice will be selected from the two main devices for the reason
that the two stack systems have their own main devices. The se-
lection rule is same as the one that the main device is selected
from stack members. The main device selected again and roles
and configuration of all stack members in which the main device
is. All members of the stack system which fails in selection will
restart and join this stack system. During this joining process,
these switch member IDs will possibly be allocated again. After
joining, they will implement the configuration of the main device
selected again.
If neither original main device nor original standby device is in
the separate stack system all members of this stack system will
restart. In addition, because the configuration of each stack sys-
tem is same IP address will be in collision. IP address of the new
stack system need to be modified. If the stack system is not be
divided intentionally the operation is as follows:
1. Turn off powers of all switches in the new stack system.
2. Connect these switches with the original stack system.
3. Open the power of these switches.
Stack System Main Device Election
and Renewed Election
Stack system main device election and renewed election will com-
ply with the following rules:
1. The current switch is main device of stack system.
2. The switch member priority is the highest. When you want
a switch to be the main device of stack system, configure its
priority the highest.
3. The MAC address of the switch is the smallest when member
priorities are same.
Main device will change when the following happen.
� The main device leaves from the current stack system.