DELL N3000 User Manual

Configuring Link Aggregation

2 On the MLAG standby switch, shut down the MLAG peer-link.
3 Copy the new firmware to the standby switch, activate it, and reboot the 

switch.

4 Re-enable the peer-link, if disabled, and ensure that it is up. Re-enable the 

MLAG-associated physical ports.

5 Wait until traffic is re-established on the standby switch.

Repeat the upgrade procedure on the MLAG primary peer:

1 On MLAG primary switch, shut down the MLAG enabled physical links.
2 On MLAG primary switch, shut down the MLAG peer-link.
3 Copy the new firmware to the primary switch, activate it, and reboot the 

switch.

4 Re-enable the peer link, if disabled, and ensure that it is up. Re-enable the 

MLAG-associated physical ports.

5 Verify that traffic is re-established on the primary switch after the 

reconvergence.

At this point, the switch firmware is upgraded and the MLAG is fully 

functional. 

MLAG interfaces can be enabled as L3 VLANs; that is, they can be assigned 

IP addresses. Static inter-VLAN routing is NOT supported on MLAG VLANs 

on the MLAG peers, and every MLAG VLAN must terminate on two MLAG 

partners. There is no support for routing protocols such as OSPF, RIP, etc. on 

MLAG interfaces. VRRP can be configured on these routing interfaces to 

provide Virtual IP/Virtual MAC redundancy. Routing is supported only on the 

edge of the MLAG towards the partner network, in support of implementing 

a subnet per VLAN towards which the partner network can route. The interior 

MLAG VLANs, and especially the MLAG peer links, must be configured for 

switching and must span the MLAG topology.

MLAG is supported as a replacement for spanning tree in L2 switched 

network topologies. When connecting to routed networks, the links/VLANs 

on the router must be part of the MLAG domain, and the links/VLANs 

leading to the rest of the L2 network or to L3 hosts must be part of the