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Because it is easy to use and inexpensive, SNMP (the Simple Network Management Protocol) network management is the industry choice for managing wide area and local area networks. But this form of In Band Management via the network has one serious disadvantage.
SNMP management information travels the same network path as your data, using the same WAN and LAN routers, hubs, and communications links. This means that if your network is the issue, communication via SNMP will be subject to the same problems your network is experiencing. Compounding that, any secure information you may be loading into your remote device (like passwords, keys, or ID’s) are exposed to interception and cannot be considered absolutely secure. When the network goes down or is severely disrupted, SNMP traffic cannot act as a bridge between the affected device and the management workstation. Any time the network connection is down, all forms of In-Band Management are useless.
It is at this point that Out- of -Band Management provides your engineers with the ability to use alternate communications that are not part of the network’s bandwidth to access the network’s firewall, routers, bridges, sonnet switches, and servers.
Out-of-Band Management products enable technicians to perform maintenance operations without the security risks of In-Band Management, while always having the guaranteed access of Out Of Band Management. Using Out-of-Band Management means it is even possible to reach the network or network device when they are out of commission.
Further, all communication can be fully encrypted, using the Advanced Encryption Standard (AES). The product line also has In Band Management capabilities to provide real time information as to the status to the devices.