Free tutors on Out Band Management
Out-band management goes through a different interface than the interface used by data traffic. In Fibre Channel SANs, for example, most devices have a separate IP interface for connection to the LAN, over which they offer management functions (Figure 8.3). For out-band management an IP connection must exist between the computer of the central management system and the device to be managed. For security reasons it can be a good idea to set up a separate LAN for the management of the storage network in addition to the conventional LAN for the data transfer. The protocol that is currently (end of 2003) most frequently used for out-band man- agement is the Simple Network Management Protocol (SNMP, Section 8.7.1). In addition there are more recent developments such as the Common Information Model (CIM) and the Web Based Enterprise Management (WBEM), which can be used instead of SNMP (Section 8.7.2). Finally, SMI-S represents a further development of WBEM and CIM that is specially tailored to the management of storage networks (Section 8.7.3). Furthermore, there are other protocols such as CMIP and DMI that specialize in server monitoring
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