[c-nsp] Cisco 3560 Port LED Stays up even When there is no device connected

[Hash Aminu]

Hi Guys


I have a 3560 in a production environment, a user connected to that port
reported that he could not use get to the network
after potting him on another port he was connected. but the port led remains
on and green

when i tried to connect a PC to the port and test the port because the
configuration on the port appears normal the Switch just retarted.
I wish to find out the underlying cause of this Issue, anybody with similar
experience ?

find the show version of the Switch  Below

TIA

Hash

5SW-ACC-SW02#sh ver
Cisco IOS Software, C3560 Software (C3560-ADVIPSERVICESK9-M), Version
12.2(25)SEB3,
RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2005 by Cisco Systems, Inc.
Compiled Fri 29-Jul-05 21:48 by yenanh

ROM: Bootstrap program is C3560 boot loader
BOOTLDR: C3560 Boot Loader (C3560-HBOOT-M) Version 12.2(25r)SEE4, RELEASE
SOFTWARE (fc1)

 5SW-ACC-SW02 uptime is 1 hour, 40 minutes
System returned to ROM by error - Debug Exception (Could be NULL pointer
dereference) Exception (0x2000)!, PC 0x2E191C
System image file is "flash:/c3560-advipservicesk9-mz.122-25.SEB3.bin"

-------------------------------

5SW-ACC-SW02#sh log
Syslog logging: enabled (0 messages dropped, 18 messages rate-limited, 0
flushes, 0 overruns, xml disabled, filtering disabled)
    Console logging: level debugging, 199 messages logged, xml disabled,
                     filtering disabled
    Monitor logging: level debugging, 0 messages logged, xml disabled,
                     filtering disabled
    Buffer logging: level debugging, 216 messages logged, xml disabled,
                    filtering disabled
    Exception Logging: size (4096 bytes)
    Count and timestamp logging messages: disabled
    File logging: disabled
    Trap logging: level informational, 206 message lines logged
        Logging to 172.33.33.20, 206 message lines logged, xml disabled,
               filtering disabled
        Logging to 172.33.33.10, 206 message lines logged, xml disabled,
               filtering disabled

Log Buffer (4096 bytes):
bitEthernet0/32, changed state to up
00:03:27: %LINEPROTO-5-UPDOWN: Line protocol on Interface
GigabitEthernet0/46, changed state to up
00:03:27: %LINEPROTO-5-UPDOWN: Line protocol on Interface
GigabitEthernet0/18, changed state to up
00:03:27: %LINEPROTO-5-UPDOWN: Line protocol on Interface
GigabitEthernet0/12, changed state to up
00:03:27: %LINEPROTO-5-UPDOWN: Line protocol on Interface
GigabitEthernet0/5, changed state to up
00:03:48: %PLATFORM-1-CRASHED: System previously crashed with the following
message:
00:03:48: %PLATFORM-1-CRASHED: Cisco IOS Software, C3560 Software
(C3560-ADVIPSERVICESK9-M), Version 12.2(25)SEB3, RELEASE SOFTWARE (fc1)
00:03:48: %PLATFORM-1-CRASHED: Copyright (c) 1986-2005 by Cisco Systems,
Inc.
00:03:48: %PLATFORM-1-CRASHED: Compiled Fri 29-Jul-05 21:48 by yenanh
00:03:48: %PLATFORM-1-CRASHED:
00:03:48: %PLATFORM-1-CRASHED: Debug Exception (Could be NULL pointer
dereference) Exception (0x2000)!
00:03:48: %PLATFORM-1-CRASHED:
00:03:48: %PLATFORM-1-CRASHED: SRR0 = 0x001DB480  SRR1 = 0x00029210  SRR2 =
0x004A8950  SRR3 = 0x00021000
00:03:48: %PLATFORM-1-CRASHED: ESR = 0x00000000  DEAR = 0x00000000  TSR =
0x8C000000  DBSR = 0x00800000
00:03:48: %PLATFORM-1-CRASHED:
00:03:48: %PLATFORM-1-CRASHED: CPU Register Context:
00:03:48: %PLATFORM-1-CRASHED: Vector = 0x00002000  PC = 0x002E191C  MSR =
0x00029210  CR = 0x90000008
00:03:48: %PLATFORM-1-CRASHED: LR = 0x002E191C  CTR = 0x007072EC  XER =
0x80000050
00:03:48: %PLATFORM-1-CRASHED: R0 = 0x002E191C  R1 = 0x029857E8  R2 =
0x00000000  R3 = 0x00000004
00:03:48: %PLATFORM-1-CRASHED: R4 = 0x03795500  R5 = 0x00000000  R6 =
0x00000000  R7 = 0x00000000
00:03:48: %PLATFORM-1-CRASHED: R8 = 0x00007530  R9 = 0x01343DD8  R10 =
0x00005100  R11 = 0x029857C0
00:03:48: %PLATFORM-1-CRASHED: R12 = 0x46B32502  R13 = 0x00110000  R14 =
0x0047F548  R15 = 0x00000000
00:03:48: %PLATFORM-1-CRASHED: R16 = 0x00000000  R17 = 0x00000000  R18 =
0x00000000  R19 = 0x00000000
00:03:48: %PLATFORM-1-CRASHED: R20 = 0x00000000  R21 = 0x00000000  R22 =
0x00000000  R23 = 0x00000000
00:03:48: %PLATFORM-1-CRASHED: R24 = 0x00000000  R25 = 0x00000000  R26 =
0x0058ED58  R27 = 0x005923F8
00:03:48: %PLATFORM-1-CRASHED: R28 = 0x02967AC0  R29 = 0x00000000  R30 =
0x02966E38  R31 = 0x00000000
00:03:48: %PLATFORM-1-CRASHED:
00:03:48: %PLATFORM-1-CRASHED: Stack trace:
00:03:48: %PLATFORM-1-CRASHED: PC = 0x002E191C, SP = 0x029857E8
00:03:48: %PLATFORM-1-CRASHED: Frame 00: SP = 0x02985800    PC = 0x002E191C
00:03:48: %PLATFORM-1-CRASHED: Frame 01: SP = 0x02985818    PC = 0x00706FA8
00:03:48: %PLATFORM-1-CRASHED: Frame 02: SP = 0x02985830    PC = 0x00592394
00:03:48: %PLATFORM-1-CRASHED: Frame 03: SP = 0x02985860    PC = 0x00592840
00:03:48: %PLATFORM-1-CRASHED: Frame 04: SP = 0x02985888    PC = 0x0017B054
00:03:48: %PLATFORM-1-CRASHED: Frame 05: SP = 0x029858A8    PC = 0x00590D7C
00:03:48: %PLATFORM-1-CRASHED: Frame 06: SP = 0x029858D0    PC = 0x0017AFC8
00:03:48: %PLATFORM-1-CRASHED: Frame 07: SP = 0x029858D8    PC = 0x0059F98C
00:03:48: %PLATFORM-1-CRASHED: Frame 08: SP = 0x029858F0    PC = 0x005566DC
00:03:48: %PLATFORM-1-CRASHED: Frame 09: SP = 0x02985918    PC = 0x0047F948
00:03:48: %PLATFORM-1-CRASHED: Frame 10: SP = 0x02985920    PC = 0x0047FA88
00:03:48: %PLATFORM-1-CRASHED: Frame 11: SP = 0x02985930    PC = 0x0047F62C
00:03:48: %PLATFORM-1-CRASHED: Frame 12: SP = 0x02985938    PC = 0x0075D788
00:03:48: %PLATFORM-1-CRASHED: Frame 13: SP = 0x00000000    PC = 0x007579CC
00:03:48: %PLATFORM-1-CRASHED:
00:04:08: %LINK-3-UPDOWN: Interface GigabitEthernet0/41, changed state to up
00:04:11: %LINK-3-UPDOWN: Interface GigabitEthernet0/41, changed state to
down
00:04:14: %LINK-3-UPDOWN: Interface GigabitEthernet0/42, changed state to up
00:04:15: %LINEPROTO-5-UPDOWN: Line protocol on Interface
GigabitEthernet0/42, changed state to up
00:05:18: %LINEPROTO-5-UPDOWN: Line protocol on Interface
GigabitEthernet0/42, changed state to down
00:05:19: %LINK-3-UPDOWN: Interface GigabitEthernet0/42, changed state to
down