The following example shows how to use full automation, partial automation, or
manual configuration to set up a redundant controlling bridge (CB) topology with
three attached bridge port extenders (BPEs) in a two-tier structure (see Redundant CBs with
Two-Tier BPEs Topology).
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Connect the CBs.
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Decide whether to use full or partial automation, or manual setup to configure
the Extended Edge
Switching topology:
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Create the peer relationship
between the CBs on CB1:
enable sharing 1:22 group 1:22,1:26 lacp
create vlan isc tag 100
configure isc ipaddress 1.1.1.1/24
configure isc add port 1:22 tagged
create mlag peer vpex_peer
configure mlag peer vpex_peer ipaddress 1.1.1.2
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Create the peer relationship
between the CBs on CB2:
enable sharing 1:22 group 1:22,1:26 lacp
create vlan isc tag 100
configure isc ipaddress 1.1.1.2/24
configure isc add port 1:22 tagged
create mlag peer vpex_peer
configure mlag peer vpex_peer ipaddress 1.1.1.1
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Start MLAG orchestration on
CB1:
start orchestration mlag vpex_peer

Note
The CLI prompt changes to
inform you that you are in orchestration mode.
Using orchestration mode enforces that all configuration commands are now
checkpointed to the MLAG peer switch.
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Create LAGs between CB and
first-tier BPEs by substituting the following commands in step 3:
Slot-1 VPEX X465.1 # enable sharing 1:10 group 1:10 lacp
Slot-1 VPEX X465.2 # enable sharing 1:20 group 1:20 lacp
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Set up the rest of the MLAG by
executing the commands in the Manual Configuration Example, inserting the following commands between step 2 and
3:
enable mlag port 1:10 peer vpex_peer id 101
enable mlag port 1:20 peer vpex_peer id 102
When LACP shared ports are configured as MLAG ports, a LAG ID
change after MLAG peer reboot may result in MLAG ports being removed and
re-added to the aggregator.
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To avoid the MLAG port flap,
configure a common LACP MAC in both MLAG peers:
configure mlag peer peer_name lacp-mac lacp_mac_address
If the ISC port belongs to a higher port number and the MLAG port comes
up before the ISC port on reboot/failover, then it might create a short
loop.
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To avoid the short loop,
configure the reload delay timer for the MLAG ports to bring up the MLAG port
with some delay:
configure mlag ports reload-delay <time>
enable mlag port reload-delay
The ISC port now comes up before MLAG port:
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Enable MLAG port isolation to
prevent packet forwarding over the ISC before the blocking filters are
installed:
configure mlag ports link-up-isolation on
For MLAG best practices with VPEX, see the following article: MLAG best practices with VPEX