We encounter a weird problem the other day. one of our 3560 switch got stucked. All interface activity leds suddently stopped went off. and the switch was not forwarding any traffic! after reload the problem was restored...after a week another one had the same problem...we send the show tech support to our dealer they said that they didnt find anything weird...what can you tell from this?
When was the show tech support removed.
When the problem was with the switch did you console and get the output or after the reboot ?
If possible can you attach the show tech output
We couldnt console and we forced to pull the plug and plug in it again. AFter reboot we saw these
Cisco IOS Software, C3560 Software (C3560-IPBASE-M), Version 12.2(25)SEE3, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 22-Feb-07 14:40 by myl
Image text-base: 0x00003000, data-base: 0x00EB11A0
flashfs: 402 files, 6 directories
flashfs: 0 orphaned files, 0 orphaned directories
flashfs: Total bytes: 32514048
flashfs: Bytes used: 8159232
flashfs: Bytes available: 24354816
flashfs: flashfs fsck took 1 seconds.
flashfs: Initialization complete....done Initializing flashfs.
extracting front_end/fe_type_1 (34696 bytes)
extracting front_end/fe_type_2 (54584 bytes)
extracting front_end/front_end_ucode_info (86 bytes)
extracting ucode_info (76 bytes)
POST: CPU MIC register Tests : Begin
POST: CPU MIC register Tests : End, Status Passed
POST: PortASIC Memory Tests : Begin
POST: PortASIC Memory Tests : End, Status Passed
POST: CPU MIC PortASIC interface Loopback Tests : Begin
POST: CPU MIC PortASIC interface Loopback Tests : End, Status Passed
POST: PortASIC RingLoopback Tests : Begin
POST: PortASIC RingLoopback Tests : End, Status Passed
POST: PortASIC CAM Subsystem Tests : Begin
POST: PortASIC CAM Subsystem Tests : End, Status Passed
POST: PortASIC Port Loopback Tests : Begin
POST: PortASIC Port Loopback Tests : End, Status Passed
Waiting for Port download...Complete
cisco WS-C3560G-48TS (PowerPC405) processor (revision D0) with 118784K/12280K bytes of memory.
Processor board ID FOC1122ZACZ
Last reset from power-on
1 Virtual Ethernet interface
52 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.
512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:1C:0F:FE:6F:00
Motherboard assembly number : 73-10214-04
Power supply part number : 341-0107-01
Motherboard serial number : FOC112228F5
Power supply serial number : AZS111905FW
Model revision number : D0
Motherboard revision number : B0
Model number : WS-C3560G-48TS-S
System serial number : FOC1122ZACZ
Top Assembly Part Number : 800-26849-01
Top Assembly Revision Number : B0
Version ID : V03
CLEI Code Number : CNMWY00ARC
Hardware Board Revision Number : 0x09
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 52 WS-C3560G-48TS 12.2(25)SEE3 C3560-IPBASE-M
Press RETURN to get started!
and in the phase of POST tests in PORTASIC CAM & PORT took a couple of minutes to pass it.
Seems no problem with the hardware after the reboot.
Any ios crash are been seen in #dir flash:
Also how is this switch connected in the network ?
No crashinfo in flash.
This switch(1) is connected to another two switches one 7600(1) and another 3560(2), which the last connect to another 7600(2).
3560(1) <-trunk--> 3560(2)
7600(1) <-trunk--> 7600(2)
various vlans run through the network. this is a small partial of the network
Mostly these problems are due to hardware or software faults.
It can be also possible of loops or traffic on the link which might have made it go into a hanged state.
Since there is no ios crash i cant comment if there was any problem with software.
tell you the truth i am confused as much the way you are.
Next time if you need to get to the root cause try to console and get the logs from the switch. I feel there will will some output that can be questioned.
Its very weird indeed...although the temperature is high...i dont think that the cpu has crashed and created the problem...thanks for the reply i will monitor this switch and i will reply!