PowerConnect 5424 High CPU

I have a Dell 5424 PowerConnect switch that runs almost constantly at 100% utilization.  I use it for our SAN iSCSI traffice as well as some LAN traffice.  The VLANs are as follows:

VLAN1 = iSCSI storage processor A
VLAN722 = iSCSI storage processor B
VLAN14 = LAN traffic
VLAN10 = management VLAN

The 5424 is connect to a Cisco 3750 switch for VLAN10 and VLAN14 using an Ethernet port for each.

I have read a lot of posts on this forum and others to try and resolve the problem.  I suspect it is related to how I have the switch connected to the Cisco switch and STP but have not been able to get a change to work.  Any ideas of what I need to disable to get the CPU utilization down?

Thanks

 

ry-n-sw4# show running-config

spanning-tree mode rstp

interface range ethernet g(2-5,7,9,11-18,20-24)

spanning-tree portfast

exit

interface range ethernet g(2-5,12-18,20-24)

spanning-tree cost 4

exit

interface range ethernet g(7,9,11)

spanning-tree cost 19

exit

interface ethernet g21

description SPA-PORT1

exit

interface ethernet g22

description SPB-PORT0

exit

interface ethernet g23

description SPB-PORT1

exit

interface ethernet g24

description SPA-PORT0

exit

interface range ethernet g(3-5,13-14,16,19-24)

flowcontrol on

exit

bridge aging-time 600

vlan database

vlan 10,14,60,721-722

exit

interface range ethernet g(2,6-9,11-12,15,17-18)

switchport access vlan 14

exit

interface ethernet g10

switchport access vlan 60

exit

interface range ethernet g(14,20,22-23)

switchport access vlan 722

exit

interface vlan 10

name MGMT

exit

interface vlan 14

name 1415

exit

interface vlan 60

name 10MGMT

exit

iscsi target port 860 address 0.0.0.0

iscsi target port 3260 address 0.0.0.0

no iscsi enable

interface vlan 60

ip address 10.10.10.5 255.255.255.0

exit

interface vlan 14

ip address 10.10.15.20 255.255.255.0

exit

ip default-gateway 10.10.10.1

no qos

hostname ry-n-sw4

management access-list 14-source

permit ip-source 10.10.14.26

permit ip-source 10.10.14.2

permit ip-source 10.10.14.84

permit ip-source 10.10.14.9

permit ip-source 10.10.15.2

exit

management access-class 14-source

logging console debugging

logging file notifications

username user1 password e10adc3949ba0f883e level 15
encrypted

username user2 password 6ae00c07556ad02e6b2 level 15 encrypted

username user3 password 0096b497ed72b5fa6 level 15 encry

pted

snmp-server engineID local 800002a203c98cf456

snmp-server location RY

snmp-server contact support@domain.net

no snmp-server enable traps

no snmp-server trap authentication

snmp-server view ViewAll system included

snmp-server view ViewAll interfaces included

snmp-server view ViewAll ip included

snmp-server view ViewAll icmp included

snmp-server view ViewAll tcp included

snmp-server view ViewAll udp included

snmp-server view ViewAll transmission included

snmp-server view ViewAll snmp included

snmp-server view ViewAll rmon included

snmp-server view ViewAll dot1dBridge included

snmp-server view ViewAll ifMIB included

snmp-server view ViewAll dns included

snmp-server view ViewAll entityMIB included

snmp-server view ViewAll radiusMIB included

snmp-server view ViewAll traceRouteMIB included

snmp-server view interfaces interfaces included

snmp-server view snmp snmp included

snmp-server community opensssnmp ro 10.10.14.26 view
DefaultSuper

snmp-server group Dellaccote v3 auth read ViewAll

clock timezone 3

sntp unicast client enable

sntp unicast client poll

sntp server 10.10.14.9 poll

ip domain-name domain.net

ip name-server 
10.10.14.9 10.10.14.2

 

 

 

 

 

 

Default settings:

Service tag: 2L5xxxF1

 

SW version 2.0.0.46 (date 
14-Apr-2011 time  13:10:53)

 

Gigabit Ethernet Ports

=============================

no shutdown

speed 1000

duplex full

negotiation

flow-control off

mdix auto

no back-pressure

 

interface vlan 1

interface port-channel 1 - 8

 

spanning-tree

spanning-tree mode STP

 

qos basic

qos trust cos

ry-n-sw4#