Budgets are tight in today's business environment. You may be asked to do more with less. Take a look through your equipment room. You may have several devices that work just fine, but they are not visible via your network management system (NMS).
W h i t e P a p e r
Common holes in an
SNMP NMS
Budgets are tight in today's business environment. You may be asked to do more with less. Take a look through your equipment room. You may have several devices that work just fine, but they are not visible via your network management system (NMS). The devices are too expensive to replace, but at the same time, you need to be able to monitor them with your NMS. The Asentria In remote SNMP-LinkT Remote Site Manager can provide the integrated monitoring capabilities you need at a small fraction of the equipment sites, replacement cost. environmental Many devices lack a network interface, but they have ASCII-extremes, equipment based protocols that can help you monitor and control them. Asentria can develop special software tools for the SNMP-Link to failures, and power communicate with these protocols in order to bridge the gap with loss threaten your SNMP network. There are three levels of integrating legacy devices into an SNMP network.communication Legacy, non-SNMP and non-networked devices networks. The first level is simply to read data alarms issued from the devices RS-232 serial ports. Typical alarms include: major and minor alarms; informational notices; and audit reports. With the SNMP-Link, you simply create a data alarm that recognizes particular alarm data strings. You can then configure the SNMP-Link to take actions appropriate to the severity of each data alarm. Sending an SNMP trap is the most common alarm action. This level of integration is said to be reactive - the SNMP-Link monitors the device and reports significant events. A reactive system may be acceptable for some users, but usually a network manager wants to exert more control over their network, and advance to a proactive level of integration.
At the second level of SNMP integration, the SNMP-Link is able to query a device for information through an RS-232 connection, enabling your NMS to become proactive. This requires more CWa hs ei t Se t Puadpye r
Common holes in an SNMP
Network Management System
Asentria SNMP-Link SL61 Remote Site Controller
sophisticated integration because the SNMP-Link must PBX (phone system) be able to communicate in the protocol of your device. or Central Office SwitchTo achieve this, Asentria has special software, called a protocol engine, which executes the queries. Here's PBXs enjoy long useful lives, so they're not always how it works. The SNMP-Link periodically asks your state-of-the-art. Phone systems are also expensive, so device for the values of its internal parameters (eg. you do not want to replace them if you can help it. free disk space, number of phone calls, voltage, signal That creates a problem if you need to manage a non-strength, etc.). The SNMP-Link gets a value, then stores networked phone system via your data network. But and/or sends the value in an "SNMP get response" to don't buy a new phone system to merge your voice your NMS. Asentria can create special object IDs that and data networks. Implement an SNMP-Link to get represent the different device parameters. your PBX on the network easily. Here's how.
The third level of integration takes the proactive First, the SNMP-Link can act as a terminal server. system one step further. Not only can you proactively Your PBX may not have a network interface, but it "get" values from your device, you can also "set" values certainly has an RS-232 maintenance port. Connect on the device. To do this, the SNMP-Link must speak that port on your PBX to one of the I/O ports on a even more fluently in the protocol of your device. It network-enabled SNMP-Link and you are all set. You translates the SNMP command you issue from your can access the SNMP-Link via your network or out-of-NMS, and converts your command into the protocol of band via modem, then pass through the SNMP-Link to the device in order to change the value on your device. make changes to your PBX. It's simple, and it requires An example might be to change a baud rate or alarm only a Telnet session or terminal emulator.level. Secondly, the SNMP-Link can monitor PBXs for Asentria expertly integrates non-networked devices alarms and translate those alarms into SNMP traps. ... [download for more]
