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OSJ
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100% CPU on Cloud Core 36 CCR1036-8G-2S+

Tue Aug 10, 2021 2:07 pm

I need some help I'm running a Cloud Core 36 CCR1036-8G-2S+ and around Peak time 6 p.m. to 9 p.m. the CPU power is running at 100% causes the internet on the network to drop in and out I have about 600 pppoe client and doing load balancing I'm also utilizing about 700mb- 900mb bandwidth around that time maybe more can not tell because the cpu get to 100% and everything drop down. what devices can you recommend to handle this demand.
 
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pukkita
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Re: 100% CPU on Cloud Core 36 CCR1036-8G-2S+  [SOLVED]

Tue Aug 10, 2021 2:25 pm

Is OPSF enabled on this router?

If so, make sure you have interface "all" as passive in OSPF > Interfaces, otherwise it will look for neighbors on every not-passive interface (pppoe ones), causing CPU spikes.

Another usual suspect is NAT (src-nat), make sure is not catching the pppoe interfaces, be the most specific as possible in src-nat rules.

Try to isolate what hogs the CPU via Tools > Profile... alternatively check your mangle setup is optimal, making proper use of mark-connection then mark-packet, not using passthrough when not required, etc...

This being said, using mangle on same router acting as pppoe AC (load balancing) is not the most optimal setup... I would setup the load balancer on another, dedicated upstream / PE router, leaving the 1036 as a strict pppoe AC.
 
OSJ
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Re: 100% CPU on Cloud Core 36 CCR1036-8G-2S+

Tue Aug 10, 2021 2:41 pm

please check out the picture

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