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84 Using MLAG in Dell Networking N-Series Switches | version 1.5
E Unsupported Configurations
The configurations and topologies found in this guide are supported. This appendix discusses a few
unsupported configuration models.
Different types of expansion modules in a peer link are unsupported. Peer devices must use the same type of
expansion module if ports from the expansion modules are to be part of the MLAG interface.
Stacking of either MLAG peer is unsupported. Neither switch used as an MLAG peer may be stacked with
other switches.
Using two different series switch models as MLAG peers is unsupported. MLAG peers must use the same
series switch model. This means any N2000 Series must be peered with another N2000 Series, an N3000
Series with another N3000 Series, and an N4000 Series with another N4000 Series.
Figure 61 shows another unsupported configuration, attempting to connect an MLAG peer with a non-MLAG
peer, such as a VLTi (shown) or Cisco vPC/VSS peer. MLAG does not support these types of scenarios.
N3048
Peer-Link
LAG
VLTi
S4810
QSFP+
MASTER
SYS
FAN
PSU
RS-232
ETHERNET
LNK ACT
4644424038363432302826242220181614121086420 48 56
52 60
SFP+
Force10 S4810P
X
Unsupported peer configuration
Other features and configurations that are incompatible with MLAG include iSCSI, IGMP and MLD.
Layer 3 VLAN termination is also unsupported with MLAG. As shown in the Supported Topologies section,
MLAG supports only layer 2 topologies.