eG Monitoring
 

Measures reported by TopSourceTest

If the NetworkInterfaceTest test reveals that a specific interface is handling an abnormally high volume of traffic or is consuming bandwidth resources excessively, you may want to know where this traffic is originating from. This is where the TopSourceTest test helps!

The TopSourceTest test reveals those hosts whose interactions with other hosts in the environment are resulting in the large volumes of data being transmitted over a network interface. In the event of a network slowdown, you can use this test to accurately identify hosts whose current network activities are ‘suspect’ - i.e., you can isolate those hosts that may be engaged in bandwidth-intensive transactions with other hosts, and could hence be contributing to the slowdown.

Outputs of the test : One set of results for each of the top-n sources (in terms of traffic volume) communicating through each interface of the target network device.

First level descriptor: Interface

Second level descriptor: Source host's IP address

Metrics are also reported for an Others descriptor. Netflow statistics pertaining to all sources that are not the top-n sources are aggregated and presented against the Others descriptor for each interface.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
bytes Indicates the total amount of data transmitted and received by this source during the last measurement period. KB Compare the value of this measure across sources to identify which source host is contributing to the high level of network traffic.

Compare the value of this measure across sources to identify which source host is contributing to the high level of network traffic.
packets Indicates the total number of packets transmitted and received by this source during the last measurement period. Packets Compare the value of this measure across sources to identify which source host is contributing to the high level of network traffic
bytesPerSec Indicates the rate at which this source transmitted/received data. Kbps  
packetsPerSec Indicates the rate at which this source transmitted/received packets. Packets/sec  
trafficRate Indicates what percentage of the total traffic on this interface was from this source. Percent A value close to 100% for this measure indicates that traffic from this source is imposing the maximum load on the network. If users complain of a latent network, you can compare the value of this measure across sources to accurately identify the source that is responsible for any congestion on the network.
BWUtilized Indicates the bandwidth utilized by this source. Percent A value close to 100% indicates that this source is indicative of excessive bandwidth utilization by this source when transmitting data.

If users complain of a latent network, you can compare the value of this measure across sources to accurately identify the source that is responsible for any congestion on the network.
in_traffic Indicates what percentage of total incoming traffic on this interface pertains to this source. Percent  
out_traffic Indicates what percentage of total outgoing traffic on this interface pertains to this source. Percent  
in_bw Indicates the percentage of bandwidth utilized by traffic coming into this interface when receiving data from this source and receiving data for this source from destinations. Percent A value close to 100% is a cause for concern as it implies a potential congestion in incoming traffic on this interface.
out_bw Indicates the percentage of bandwidth utilized by traffic going out of this interface when transmitting data to this source and when transmitting data for this source to destinations. Percent A value close to 100% is a cause for concern as it implies a potential congestion in outgoing traffic on this interface.
in_octets Indicates the amount of data received by this source. KB Compare the value of this measure across sources to know which source is receiving maximum data over this interface.
out_octets Indicates the amount of data sent by this source. KB Compare the value of this measure across sources to know which source is transmitting maximum data over this interface.
in_packets Indicates the number of packets sent by this source. Number  
out_packets Indicates the number of packets received by this source. Number  
in_octetsRate Indicates the rate at which data is received by this source. Kbps If the value of this measure consistently drops for this source, it could indicate an incoming traffic congestion.
out_octetsRate Indicates the rate at which data is sent by this source. Kbps If the value of this measure consistently drops for this source, it could indicate an outgoing traffic congestion.
in_packetsRate Indicates the rate at which packets are received by this source. packets/Sec If the value of this measure consistently drops for this source, it could indicate an incoming traffic congestion.
out_packetsRate Indicates the rate at which packets are transmitted by this source. Packets/Sec If the value of this measure consistently drops for this source, it could indicate an outgoing traffic congestion.