Network and Fiber Ports Monitoring
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Network and Fiber Ports Monitoring |
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Hardware Sentry automatically detects the information sources available on the monitored computer and displays the hardware information provided by those sources in the PATROL Consoles in the corresponding container.
Network and Cyberport Monitoring Icons Device icons are automatically created below the main Network Interface icon they are attached too. Hardware Sentry triggers alerts if it detects a break in the network link. By default, this alert is raised ONLY if a previously detected network link is broken. The following parameters are monitored for each network of fiber adapter:
Status The Status parameter represents the current status of the network interface. An alert is triggered when the network interface does not respond. LinkStatus The LinkStatus parameter shows the current status of the network interface to the network (i.e. whether or nor plugged-in). By default, Hardware Sentry will trigger a warning if a network interface previously connected to the network is now unplugged. However, it will not trigger an alert for network interfaces that were never connected. ErrorPercent The ErrorPercent parameter gives the percentage of transmitted and received packets that were in error (due to low-level protocol error or physical media problems). A warning is raised when this percentage goes above 10% and an alarm when above 30%. A frequent high error percentage implies there is a serious problem with the cable or the interface. DuplexMode Monitoring network cards communication performance may be critical to ensure that they run at the expected speed in order to avoid network congestion or any other performance issues. Most Ethernet cables allow communication in both directions simultaneous between two connected cards, this feature is commonly named "full duplex". However, a defective cable or a simple internal malfunction within the cards can prevent them from communicating both ways simultaneously. In that case, once a party begins receiving a signal, it must wait for the transmitter to stop transmitting, before replying. This communication mode is typically called "half-duplex" and can generate network congestion. The DuplexMode parameter's value is set to 0 when the network adapter is running in "half-duplex" mode and 1 when in "full-duplex" mode. By default, the DuplexMode parameter triggers a WARNING when an adapter that was running in "full-duplex" suddenly starts communicating in "half-duplex". LinkSpeed The LinkSpeed parameter reports the speed that the network adapter and its remote counterpart currently use to communicate with each other. Note that the unit of this parameter is Mbits/sec. By default, the LinkSpeed parameter triggers a WARNING when the adapter "slows down", i.e. re-negotiates the link speed with its remote counterpart, and is forced (by some circumstances to figure out) to downgrade to a slower communication rate. ReceivedBytesRate, TransmittedBytesRate, ReceivedPacketsRate, TransmittedPacketsRate Transmission rates monitoring provides administrators with valuable information regarding the incoming and outgoing data managed by servers and switches. BandwidthUtilization This parameter is ONLY collected if LinkSpeed, DuplexMode, ReceivedBytesRate and TransmittedBytesRate are all properly collected. The bandwidth utilization (in percentage) cannot be calculated without one of the above-mentioned parameters. See Also |
