Reply to post: 100% utilised redundant links

You're flowing it wrong: Bad network route between Microsoft, Apple blamed for Azure, O365 MFA outage


100% utilised redundant links

This sounds like an outage I had, we had 2 links to our hosted 'cloud' telephony system provider, one from each building with a route between both buildings so that if one dropped all the traffic would route over the other link. What we did not realize (as the provider said they monitored all this) was that both links were running around 80% utilization, so when one dropped (thanks British gas for digging up the cable) we started dropping calls all over the place in both buildings.

It took them 2 days to admit they had not noticed the high utilization and this was the cause, after making us go through every single switch and check the QoS was as it should be...

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