Cisco ISR 2901 transmission of SMB traffic gives a load of 90%, where to look for the cause?

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Nikita Filippov2016-05-06 14:07:34

Cisco

Nikita Filippov, 2016-05-06 14:07:34

Available:
Cisco ISR 2901
EHWIC-4ESG-P
Several VLANs have been raised on Cisco, the corresponding vlan interfaces are configured, in the normal state, the load on the CPU is from 7-15% of which 3-7% falls on interrupts.
When transferring traffic via the SMB protocol from one vlan to another, the load on the CPU grows to 90-95% on interrupts, when using SMB within the same vlan, everything is absolutely normal.
I would like to understand in which direction to dig.

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1 answer(s)

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sergrok, 2016-05-06
@Shaz

Well, everything is logical. Inside one vlan, switching is done to EHWIC-4ESG-P, and between vlans, routing is done by 2901 itself, and its performance is not so hot at all
www.cisco.com/web/partners/downloads/765/tools/qui...
In your case it is most logical to install any L3 switch and route vlans with LAN on it.