Brocade switch with SnmpObjectId as "220.127.116.11.4.1.1518.104.22.168.1" belongs to the Backup and Storage class.
During Horizontal Discovery, these switches are getting discovered in the IP Switch Class instead of the IT Backup and Storage custom class within a custom table called "u_custom_table".
The SNMP OID of the Brocade device "22.214.171.124.4.1.15126.96.36.199.1" corresponds to the "Standard Network Switch" Classifier with the "Brocade" manufacturer. The table value has been updated to custom IT Backup and Storage from IP Switch.
Based on the above OID classification the device is classified as "Switch", which is classified and expected behaviour from OOB Discovery of this device.
From SNMP - Classify: Input payload which is received, could see below OID is probed.
<sysName oid="188.8.131.52.184.108.40.206" type="SnmpOctetString">sa-biblade01slotc1</sysName>
<sysDescr oid="220.127.116.11.18.104.22.168" type="SnmpOctetString">Fibre Channel Switch.</sysDescr>
<sysObjectID oid="22.214.171.124.126.96.36.199" type="SnmpObjectId">.188.8.131.52.4.1.15184.108.40.206.1</sysObjectID>
You can classify the Brocade switch OOB by creating an SNMP OID record and mapping it to the "standard network switch" classifier.