Friday, June 1, 2018

iSCSI round robin across two Nexus 3064 with nxos 7.0

I'm trying to get a SAN configured on a set of nexus 3064's. Initially this was configured on a single switch with round robin working, however now that each host in the system is split between two, vm's on the esxi host aren't able to boot. This is resolved by resetting the path type to Fixed or last used.

Neither of the SAN units, nor the ESXi host are connected to the switch using a port channel in the vPC domain, however vPC is configured with 2 40G uplinks in the peer-link. vPC is functioning particularly to synchronize the cam tables, but there is an in domain port channel to another switch that is functional. Also, the SAN nodes bond their links using the balance-alb algorithm, but are not lacp.

All of the SAN traffic is on the same VLAN to simplify this, and I'm trying to achieve redundancy on the physical layer while not losing throughput. Is there a configuration I'm missing that will allow these switches to act as 1 unit?



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