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LAGG - Failover with different switches
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Topic: LAGG - Failover with different switches (Read 40 times)
KiralyCraft
Newbie
Posts: 1
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LAGG - Failover with different switches
«
on:
September 18, 2024, 10:25:19 pm »
I have a machine with multiple interfaces, and two of them are connected between different switches. The switches are configured in a redundant way, but not quite the best (STP only). I have two links connected one in each switch, and they are configured in a LAGG with failover mode. However, due to the ports being actively up, I suspect this causes some issues in the STP scenario. Is there a way of turning off the non-active links such that the switches do not see it?
Or, can I have both of them active and simply "enable STP" on OpnSense as well?
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Monviech
Hero Member
Posts: 1359
Karma: 160
Re: LAGG - Failover with different switches
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Reply #1 on:
Today
at 06:16:20 am »
Spanning tree is needed on layer 2 between switches. The OPNsense is a Router and should be connected to Edge ports that do not send or receive STP packets.
Its interesting that a LAGG between switches that are only connected via STP (so non stacked) even works. For these scenarios there is MLAG.
https://en.m.wikipedia.org/wiki/Multi-chassis_link_aggregation_group
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Last Edit:
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at 06:20:03 am by Monviech
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Hardware:
DEC740
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LAGG - Failover with different switches