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9 Using MLAG in Dell Networking N-Series Switches | version 1.5
When changing any of the settings listed in Table 1, administrators must modify the settings on both MLAG
peer switches. Enable MLAG only after configuring the settings on both peer switches.
Dell recommends temporarily disabling MLAG when making changes to these settings.
Caution: Failure to make these settings identical on both peers may cause sporadic traffic issues on the
network, which can be difficult to troubleshoot.
Note: Be sure to schedule down time if making changes that may negatively impact traffic or cause data
loss.
Settings that must match between MLAG peers
Option category
Settings
Link Aggregation
Hashing mode
Minimum links
Static/dynamic LAG
LACP parameters
o Actor parameters
o Admin key
o Collector max-delay
o Partner parameters
Spanning Tree
Bpdufilter
Bpduflood
Auto-edge
TCN-guard
Cost
Edgeport
Root guard
Loop guard
STP Version
STP MST VLAN configuration
STP MST instance configuration (instance ID,
port priority, port cost/mode)
MLAG Port-channels
Port-channel mode
Link speed
Duplex mode
MTU
Bandwidth
VLAN configuration
Interfaces
PFC configuration
CoS queue assignments
VLANs
MLAG VLANs must be configured on both
MLAG Peers, and connect to two partner LAGs.
Firmware
Both peers require the same firmware version to operate
correctly.
Misc.
FDB entry aging timers
Static MAC entries
ACL configuration