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09-21-2017 07:03 AM - edited 03-05-2019 09:09 AM
Hi All
Can anyone answer me a question around CPU on routers
If I have a 2811 for example running a number of ipsec tunnels with qos on them, and the router is running at 98% cpu.
what is the effect on this on traffic going through the router? will it drop? queue etc ?
cheers
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09-21-2017 07:53 AM
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09-21-2017 07:39 AM
I had a couple of 800s like that running for a while before I got chance to replace one the board failed most likely we were hammering the router too much its was always that high under specked from install, we also kept seeing dropped packets on the circuits due to excessive cpu was effecting performance on some apps that were sensitive , if its a bug though and its cosmetic it may be causing any issue but if your hardware is running that hot constantly its going to run into issues at some stage
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09-21-2017 07:44 AM
Hi
So, can you clarify if you think that the router would drop packets etc?
For example if the router is at 100% and a packet comes in that needs to have encryption and qos applied, would it fail to encrypt? would it queue? or would the router drop it ?
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09-21-2017 07:53 AM
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09-21-2017 09:50 AM
I.e. a maxed out CPU, on a software only based router, tends to be very adverse to your transit traffic.
