brocade switch smi discovery

Hello,

re-install of SRM3.5.2 vApp so still investigating SRM features and preparing 3.6.2 upgrade.

I have installed the Brocade FC switch solution pack for SMI discovery only, no SNMP masks.

The fabric and zoning metrics are populating the DBs but none of the fabric switches are being discovered. Has anyone seen that before?

I can add a switch in manually via the watch4netSNMPCollector although it doesn't show lots of metrics but I thought this would not be necessary.

Thanks

Wayne