Create An Mlag; Cli: Create An Mlag On Lag2 And Lag3 - NETGEAR ProSAFE M5300 Series Software Administration Manual

Create an MLAG

In this configuration example, each MLAG switch has three LAGs:
• Two LAGs to the remote LAG partner: LAG2 and LAG3
• One LAG to the peer MLAG device: LAG1
If more remote devices are needed, follow the steps in the following sections to add them.
This configuration example is presented as CLI commands and as a web interface
procedure.

CLI: Create an MLAG on LAG2 and LAG3

1. Enable MLAG globally.
(Switch P or S) #config
(Switch P or S) (Config)#feature vpc
2. Enable the MLAG keep-alive protocol in the MLAG (VPC) domain.
This step is mandatory.
(Switch P or S) (Config)#vpc domain 1
(Switch P or S) (Config-VPC 1)#peer-keepalive enable
(Switch P or S) (Config-VPC 1)#exit
3. Enable the MLAG peer link on LAG1 that is used to connect the MLAG peers.
After you have configured a peer link, the traffic from the peer link is prevented from
leaving any MLAG member port. When a failure occurs on one MLAG peer switch and
the traffic has to flow through the MLAG member ports of the peer, the traffic that arrives
from the peer link on the second MLAG device can leave only from select MLAG
interfaces. Therefore, you need to configure the following options on the port channel of
the peer link:
• Disable STP on the peer link.
• Include the peer link in all the VLANs that are configured on all MLAG interfaces on
the device.
• Enable egress tagging on the peer link.
• NETGEAR recommends that you use dynamic LAGs as port channels.
• NETGEAR recommends that you configure Unidirectional Link Detection (UDLD) to
detect and shut down any unidirectional links.
Managed Switches
MLAGs
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