Error receiving SCP response forgetting the switching mode
I have been having issues with standby supervisor reloads on multiple access switches all running 12.2(33)SXI1. I have ruled out hardware (since this occurs on multiple switches, although have replaced the SUP32 on one switch to no difference) and am looking for other causes.
Whenever the standby supervisor reloads, I see the following messages in the log (same for the 4-5 switches for which I have seen this condition):
Jun 23 10:57:04.648 EDT: %PFREDUN-SP-7-KPA_WARN: RF KPA messages have not been heard for 135 seconds Jun 23 10:57:31.640 EDT: %PFREDUN-SP-7-KPA_WARN: RF KPA messages have not been heard for 162 seconds Jun 23 10:57:40.852 EDT: %SNMP-5-MODULETRAP: Module 6 [Down] Trap
I have also seen some strange diagostic event messages (show diagnostic events):
. SP-RP Ping Test skipped. Reason(s): RP CPU is b usy (87% util). 06/23 12:44:53.478 E  diag_get_bus_swt_mode(): Error receiving SCP resp onse forgetting the switching mode 06/23 12:45:08.490 E  diag_asic_read_reg16[6/1/42]: set_get_asic_regs() failed (get) 06/23 12:45:08.494 E  queryHyperionSynched: diag_asic_read_reg16 fai led
06/23 12:45:23.494 E  diag_get_bus_swt_mode(): Error receiving SCP resp onse forgetting the switching mode 06/23 12:45:38.502 E  diag_asic_read_reg16[6/1/42]: set_get_asic_regs() failed (get) 06/23 12:45:38.510 E  queryHyperionSynched: diag_asic_read_reg16 fai
I understand that the RF KPA messages indicate that the Active supervisor has not heard from the Standby and so has reboot it - this is normal procedure. I am at a loss as to why this is happening. I see from the diagnostic messages that the RP is at a pretty high CPU level, but I also understand hitting 100% can be normal. I am curious, though, about the "Error receiving SCP response forgetting the switching mode" message because that seems atypical and could help lead me to what is causing these unexpected reboots.
I agree with you that this seems to be software or traffic related.....I did not see any issues on my switches for about 3 months after installing them and then noticed this issue. Are you using Cisco IP phones? What about Cisco Wireless?
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