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High cpu spikes


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Cisco 2960 ; 2 Vlan ; It connects to a Dlink layer 3 and an HP Procurve 2610. During implementation I was not able to configure trunks from switch to switch, so i set the connecting ports as access ports between the switches.
So the procurve has Port1(Vlan1), Port2(Vlan2) ----- Dlink [ Port5(Vlan1), Port6(Vlan2) ]
The cisco also has Port1(Vlan1), Port2(Vlan2) ------ Dlink [ Port7(Vlan1), Port8(Vlan3)
Enabled STP on the dlink and cisco. The dlink and procurve have low cpu (7-8%) and seem to be fine.

- Problem 1 : When i activate stp on the procurve, it hangs up and i cant access it (mgmt ip is on vlan1) (loop ??)
- Problem 2 : average ok, high cpu spikes on the 2960,  high broadcasts; the amount of traffic on that switch does not justify those numbers attached is a screenshot

Anyone has experience with Dlink layer 3 switches, unable to find a  way to specify the encapsulation type; or how to tag the packets with the vlan id properly
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Istvan Kalmar
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Hi,

I think you made an STP loop!
You need to use same STP type on individual devices!
What type of STp do you use on DLINK, cisco and HP?
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giltjr
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humm...ok I'll try trunking it and see what happens
I changed the topology and was able to clear the loop. when i activate lacp (active - passive) the link comes up but i only have access to the vlan interfaces...the access ports do not come through the trunks.
So i disabled it for now...any ideas ?
Can you post how the switches are connected now and if possible the configs of each of the switches?