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

 

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

7

Using MLAG in Dell Networks

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Dell N2048, N3024 manual Specific configuration options to be equal among Mlag peers