Friday, June 26, 2020

iSCSI design question (same subnet but not really)

Hi all,

I'm in desperate need for some advice. I have one NAS, two Hyper-V servers and two Cisco L3 switches stacked.

Cisco ports are on a VLAN which subnet is 172.21.3.0/23

I don't want to use LACP for iSCSI but read that two subnets are needed, one per "path".

The question is:

Could I set up one of the iSCSI interfaces to 172.21.3.50/24 and the other to 172.21.4.50/24 ?

Would that count as the two subnets needed for multipath iSCSI?

It "feels wrong" but in theory it should be ok? I just don't know the Layer 2 implications of this.

Thanks

Edit. typo



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