Hello there, MRRack. :emotion-15: I think I may contribute here with these two articles: Just one note about this last article: such unusual packet traffic it's hard to pin-point. You will need to sniff it with wireshark and most of the time you will not find it. I recomend you start with the basics passing only the VLANs you need on the uplink trunk. I've seen by my own experience that common windows multicast and broadcast coming from unnecessary VLANs cause the cpu usage increase. Hope that helps. Best regards,
Hi, we have two M8024 switches in here, and they are showing high cpu utilization (constant 22% with 40% if I enable mst)Currently only one host is connected to the switch with zero activity, all other ports are shutdown.Spanning tree disabled, ip redirects disabled, http server disabled, scsi disabled.Pretty much all features are disabled and yet, here is a output of cpu utilization Switch has latest firmare and bootcode: 5.1.9.3 A38    PID      Name                    5 Secs     60 Secs    300 Secs----------------------------------------------------------------- 3fed930 tTffsPTask                 0.00%       0.01%       0.03% 400add0 tNet0                      0.40%       0.34%       0.33% 4220670 ipnetd                     0.00%       0.00%       0.01% 423b320 tIomEvtMon                 0.40%       2.05%       1.17% 4244bb0 osapiTimer                 1.00%       1.04%       1.04% 44554c0 bcmL2X.0                   5.81%       5.65%       5.64% 447bd80 bcmCNTR.0                  1.00%       1.73%       1.44% 4b83240 bcmRX                      5.81%       5.00%       4.18% 5155780 MAC Send Task              0.60%       0.38%       0.13% 515ec80 MAC Age Task               1.00%       0.31%       0.13% 5460698 USL Worker Task            0.00%       0.00%       0.01% 551cad0 bcmLINK.0                  1.20%       1.27%       1.47% 816b010 osapiWdTask                0.00%       0.05%       0.05% 9288130 servPortMonTask            0.40%       0.31%       0.32% 9416468 simPts_task                0.00%       0.06%       0.05% 9427a20 SimAddrConflictTask        0.00%       0.01%       0.00% 97f4230 dtlTask                    0.20%       0.04%       0.01% 9a47ed8 emWeb                      0.40%       0.09%       0.10% 9a5be50 dtlAddrTask                0.00%       0.01%       0.00% a198018 hapiL3AsyncTask            0.00%       0.02%       0.02% a2b9380 cmgrTask                   0.00%       0.03%       0.03% a2e7e30 trafficStormControl        0.00%       0.00%       0.13% a6168e0 DHCP snoop                 0.00%       0.06%       0.36% a6b21f0 Dynamic ARP Inspect        0.60%       0.66%       0.37% b003720 dot1s_timer_task           0.20%       0.14%       0.35% b7f3df0 radius_task                0.00%       0.00%       0.02% b86fe80 unitMgrTask                1.00%       0.87%       0.82% b89a420 umWorkerTask               0.00%       0.00%       0.01% bab8b10 snoopTask                  0.00%       0.07%       0.06% c2330f0 dhcpsPingTask              0.60%       0.78%       0.68% c31de48 SNTP                       0.20%       0.03%       0.01% c5b4f38 sFlowTask                  0.00%       0.08%       0.13% c614a58 spmTask                    0.20%       0.13%       0.13% cfa5028 tRtrDiscProcessingT        0.20%       0.12%       0.07% da25a30 pktRcvrTask                0.00%       0.01%       0.01%123642b0 lldpTask                   0.80%       0.73%       0.77%12498088 DHCPv4 Client Task         0.20%       0.03%       0.02%1266c628 RMONTask                   1.00%       0.98%       0.89%1267e260 boxs Req                   0.60%       0.58%       0.59%13599410 sshd                       0.00%       0.01%       0.04%135c37d0 sshd[0]                    0.00%       0.00%       0.03%----------------------------------------------------------------- Total CPU Utilization             23.84%      23.87%      21.84%bcmRX and bcmL2X.0 seem to take alot, I did checked other threads with people posting cpu status and I did not see any with those processes that high Other relevant info: Total Packets Received (Octets)................ 185808Packets Received Without Error................. 2884Unicast Packets Received....................... 0Multicast Packets Received..................... 0Broadcast Packets Received..................... 2884Receive Packets Discarded...................... 0Octets Transmitted............................. 288Packets Transmitted Without Errors............. 3Unicast Packets Transmitted.................... 0Multicast Packets Transmitted.................. 3Broadcast Packets Transmitted.................. 0Transmit Packets Discarded..................... 0Most Address Entries Ever Used................. 6Address Entries Currently in Use............... 6Maximum VLAN Entries........................... 1024Most VLAN Entries Ever Used.................... 5Static VLAN Entries............................ 5Dynamic VLAN Entries........................... 0VLAN Deletes................................... 0Time Since Counters Last Cleared............... 0 day 1 hr 22 min 11 sec show statistics tengigabitethernet 1/0/1 shows nothing dubious  Any help appreciated, thank you
Empty PowerConnect M8024 High CPU Usage