CQM Graphs: Difference between revisions
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<indicator name="Diagnostics">[[File:menu-spanner.svg|link=:Category:Diagnostic Tools|30px|Back up to the Diagnostics Category]]</indicator> |
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The FireBrick 6000 routers we use provide us with Continuous Quality Monitoring of every broadband circuit. This allows us to track the quality of each and every connection in great detail. The router itself produces the graphs in real time, and can also provide csv files with accurate data for each graph. |
The FireBrick 6000 routers we use provide us with Continuous Quality Monitoring of every broadband circuit. This allows us to track the quality of each and every connection in great detail. The router itself produces the graphs in real time, and can also provide csv files with accurate data for each graph. |
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|Purple on the graph is off line, and this can be short blips if a line loses sync or longer. Notes (pins) are often added to graphs to explain why a line is off line if we know, especially when we are investigating a fault. The notes on this graph told when the BT engineer arrived and left. |
|Purple on the graph is off line, and this can be short blips if a line loses sync or longer. Notes (pins) are often added to graphs to explain why a line is off line if we know, especially when we are investigating a fault. The notes on this graph told when the BT engineer arrived and left. |
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|[[File:Cqm-heating-small.png]] |
|[[File:Cqm-heating-small.png]] |
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|'''Regular drops repeating every day''' e.g. Central Heating causing drops. [ |
|'''Regular drops repeating every day''' e.g. Central Heating causing drops. [[:File:Cqm-heating.png |View a week of these graphs]] Here there is interference as the central heating goes on, the drops are regular - twice a day, at the time the heating goes on. This actually highlighted a fault in the central heating for this customer as the graphs showed no drops for 2 days running! |
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===Faulty Card in a TalkTalk LTS=== |
===Faulty Card in a TalkTalk LTS=== |
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[[File:Cqm-faulty-lts-card.png|none| |
[[File:Cqm-faulty-lts-card.png|none|800px|Card in a TalkTalk LTS ]] |
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Here we have three days of graphs, you can see packet loss starting at around 2:50AM, which then gets worse two days later and is then fixed. |
Here we have three days of graphs, you can see packet loss starting at around 2:50AM, which then gets worse two days later and is then fixed. |
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From 9AM on day 3, the interface that we have with TalkTalk started reporting input discards. |
From 9AM on day 3, the interface that we have with TalkTalk started reporting input discards. |
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[[File:Discards.jpg|none| |
[[File:Discards.jpg|none|400px|Interface discards ]] |
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The faulty line card was taken out of service, and the packet loss was no longer. |
The faulty line card was taken out of service, and the packet loss was no longer. |
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