Adding A Member Switch To A Stack - Huawei S Series White Paper

S Series Switches
iStack Technology White Paper
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4.5 Adding a Member Switch to a Stack

In some scenarios, one or multiple new switches need to be added to a running stack to work
with existing member switches. This process involves the following steps:
Step 1 Collect the stack topology and prevent loops of stack links.
Before adding a new switch to a stack, analyze the physical connections of the stack.
If the stack has a chain topology, add the new switch to either end of the chain topology to
minimize the impact on existing services. Adding the new switch to the middle of the chain
topology will cause the split of the stack. Therefore, analyze the impact of adding a new
switch to a stack on existing services.
If the stack has a ring topology, change the ring topology into a chain topology and then add
the new switch on either end of the chain topology. In versions earlier than V200R001, you
need to select where to break the ring. It is not recommended to break the ring on the link
between the master and standby switches. Breaking the ring on the link between the master
and standby switches will cause the reelection of the standby switch and result in the role
changes of member switches.
Issue 01 (2013-05-25)
#
interface Eth-Trunk1
mad detect mode relay
#
interface GigabitEthernet0/0/5
eth-trunk 1
#
interface GigabitEthernet1/0/5
eth-trunk 1
#
interface GigabitEthernet2/0/5
eth-trunk 1
#
return
Configuration file of SwitchD
#
sysname SwitchD
#
interface Eth-Trunk1
mad relay
#
interface GigabitEthernet0/0/1
eth-trunk 1
#
interface GigabitEthernet0/0/2
eth-trunk 1
#
interface GigabitEthernet0/0/3
eth-trunk 1
#
return
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