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7 Using MLAG in Dell Networks
.
Change any settings mentioned below on both
the MLAG peers when required. Enable MLAG only after
the above settings are configured on the two peer switches.
It is also recommended for MLAG to be temporarily disabled in order to make subsequent changes to the
above settings.
Note: Be sure to schedule down time if making changes that impact traffic or cause data loss.
Note: Failure to make these areas identical may cause sporadic traffic issues on the network which are
difficult to troubleshoot.
Option category
Settings that need to match on both MLAG peers
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
1. 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
Table 1 Specific configuration options to be equal among MLAG peers