Quote Originally Posted by johngoutbeck View Post
Thanks for your input J.

I haven't seen and example of 2 (multiple) address for a resource connection

I'm avoiding bonding since I have simple switches.
there are bonding modes that do not require explicit switch support (as would be needed for i.e. LACP, bonding mode 4).

Quote Originally Posted by johngoutbeck View Post
The reason for not bonding is to have two LAN links on different subnets, each connected to their own switch. This way if a link or a switch goes down (scheduled or unscheduled), then the connection between the DRBD storage system would stay up and connected - like multipath for a SAN.

Bonding(LAG) can be used if the switches support MLAG (Multi-Chassis Link Aggregation - where 2 ports on 2 different switches work as a LAG bond).
...or you interconnect the switches on layer 2, connect each server to each switch and use bonding modes without LACP, i.e. hot-standy or round-robin. If one link breaks, or one switch is rebooted, you'd still have connectivity. Just not as effective as LACP appears - but in case you're only connecting these two servers, LACP typically wouldn't use more than one link at a time either.

Quote Originally Posted by johngoutbeck View Post
So I take it DRBD does not support mulitpath between storage nodes within it resource configuration.
Yes, I'd say so - just because I have found no indication that it would support it, so if some DRBD guru jumps in as says "it does!", I'll stand corrected

Regards,
J