Cisco - Catalyst Switch Mill Reset (Ios)
The physical care for inward this department applies to the router cards, the modular or fixed configuration switches, in addition to GL-3 Catalyst series switches running Cisco IOS Software:
· Router cards
o WS-X4232-L3 (Catalyst 4006/4000)
o RSM/RSFC (Catalyst 5500/5000)
o MSFC/MSM (Catalyst 6500/6000)
· Catalyst modular switches
o Catalyst 6500/6000
o Catalyst 4500/4000
· Catalyst fixed configuration switches
o Catalyst 2940
o Catalyst 2950/2955
o Catalyst 2970
o Catalyst 3550
o Catalyst 3560
o Catalyst 3750
o Catalyst 2900XL/3500XL
· GL-3 Catalyst switches
o Catalyst 2948G-L3
o Catalyst 4908G-L3
Switches running Cisco IOS Software convey a running configuration file in addition to a startup configuration file. The RAM stores the running configuration, in addition to the NVRAM stores the startup configuration. When you lot brand a configuration alter to a switch running Cisco IOS Software, the alter becomes usage of the running configuration. You must salve the configuration changes to the startup configuration; otherwise, the configuration is lost during the side past times side reload or ability outage. This is because you lot lose the running configuration stored inward RAM when you lot reload the switch or plough off the power. To salve the configuration into NVRAM, upshot the write memory ascendency or the copy running-config startup-config command. If you lot create non salve your changes to NVRAM, the changes clear from RAM in addition to are no longer usage of the startup configuration when the switch reloads.
On the Catalyst modular or fixed configuration switches running Cisco IOS Software, a split upwardly file stores the VLAN information. The file is called vlan.dat file in addition to is stored inward NVRAM for modular switches or inward Flash for fixed configuration switches. To reset these switches to mill defaults, you lot involve to delete the startup configuration in addition to the vlan.dat file. To restore the Catalyst 2948G-L3/4908G-L3 switches in addition to router cards to the mill defaults, you lot alone involve to delete the startup configuration file. These switches create non comprise VLAN data because they create non participate inward VLAN Trunk Protocol (VTP).
To reset the switch to mill default, upshot the erase startup-config or write erase command. This ascendency does non clear the kicking variables, such every bit config-register in addition to kicking organisation settings. You tin alter the kicking organisation parameters amongst the boot command. In Catalyst 4500/4000 in addition to 6500/6000 series switches running Cisco IOS Software, you lot tin alter the configuration register value amongst the config-register command.
This illustration shows how to reset a switch running Cisco IOS Software to mill defaults amongst the write erase command:
Cat2950# write erase
Erasing the nvram filesystem volition take all files! Continue? [confirm]y[OK]
Erase of nvram: complete
Cat2950#
Cat2950# reload
System configuration has been modified. Save? [yes/no]: n
!--- Do non salve the configuration at this prompt. Otherwise, the switch
!--- reloads amongst the electrical flow running configuration in addition to does non reset to default.
Proceed amongst reload? [confirm]y
2w0d: %SYS-5-RELOAD: Reload requested
C2950 Boot Loader (C2950-HBOOT-M) Version 12.1(11r)EA1, RELEASE SOFTWARE (fc1)
Compiled Monday 22-Jul-02 18:57 past times antonino
WS-C2950G-12-EI starting...
!--- Output suppressed.
32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:05:DC:C9:79:00
Motherboard assembly number: 73-5781-08
Motherboard series number: FAB0515A069
Model revision number: 02
Model number: WS-C2950-24
System series number: FAB0517Q00B
--- System Configuration Dialog ---
Would you lot similar to last inward the initial configuration dialog? [yes/no]:n
00:00:16: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlan
00:00:21: %SYS-5-RESTART: System restarted --
Cisco Internetwork Operating System Software
IOS (tm) C2950 Software(C2950-I6Q4L2-M)Version 12.1(19)EA1, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2003 past times cisco Systems, Inc.
Compiled Tue 09-Dec-03 00:12 past times yenanh
Press RETURN to larn started!
00:00:37: %LINK-5-CHANGED: Interface Vlan1, changed patch to administratively down
00:00:38: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed patch to down
Switch>
Switch>
At this stage, the switch configuration has reset to the mill defaults, amongst the exclusion of the VLAN information.
To reset the VLAN data to the mill defaults, delete the vlan.dat file from the Flash or NVRAM in addition to reload the switch. On the 6500/6000 series switches running Cisco IOS Software, the vlan.dat file is stored inward const_nvram. On the 4500/4000 series switches running Cisco IOS Software, the vlan.dat file is stored inward cat4000_flash:. On the 2940, 2950/2955, 2970, 3550, 3550, 3560, 3570, in addition to 2900XL/3500XL fixed configuration switches, the vlan.dat file is stored inward flash:.
To erase the vlan.dat file on the 6500/6000 switches, upshot the erase const_nvram: command. On the 4500/4000 switches, upshot the erase cat4000_flash: command. On the fixed configuration switches, upshot the delete flash:vlan.dat command.
The illustration steps exhibit how to delete the VLAN data on Catalyst fixed configuration switches. You tin usage the same steps, amongst their respective commands, for the 6500/6000 in addition to 4500/4000 running Cisco IOS Software:
1. To verify the VLAN information, upshot the show vlan command, in addition to to verify the vlan.dat file, upshot the dir command.
2. Cat2950# show vlan
3.
4. VLAN Name Status Ports
5. ---- -------------------------------- --------- -------------------------------
6. 1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4
7. Fa0/5, Fa0/6, Fa0/7, Fa0/8
8. Fa0/9, Fa0/10, Fa0/11, Fa0/12
9. Fa0/13, Fa0/14, Fa0/15, Fa0/16
10. Fa0/17, Fa0/18, Fa0/19, Fa0/20
11. Fa0/21, Fa0/22, Fa0/23, Fa0/24
12.
13. 2 VLAN0002 active
14. 3 VLAN0003 active
15. 4 VLAN0004 active
16.
17.
18. !--- Despite the erase of the startup configuration file,
19. !--- these user-created VLANs remain.
20.
21.
22. 600 VLAN0600 active
23. 1002 fddi-default active
24. 1003 token-ring-default active
25. 1004 fddinet-default active
26. 1005 trnet-default active
27.
28. VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
29. ---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
30. 1 enet 100001 1500 - - - - - 1002 1003
31. 2 enet 100002 1500 - - - - - 0 0
32. 3 enet 100003 1500 - - - - - 0 0
33. 4 enet 100004 1500 - - - - - 0 0
34. 600 enet 100600 1500 - - - - - 0 0
35. 1002 fddi 101002 1500 - - - - - 1 1003
36. 1003 tr 101003 1500 1005 - - - srb 1 1002
37. 1004 fdnet 101004 1500 - - 1 ibm - 0 0
38. 1005 trnet 101005 1500 - - 1 IBM - 0 0
39. Switch#
40.
41.
42. Cat2950# dir flash:
43.
44. !--- On the 4500/4000, upshot the dir cat4000_flash: command.
45. !--- On the 6500/6000, upshot the dir const_nvram: command.
46.
47. Directory of flash:/
48.
49. 2 -rwx 2487439 Mar eleven 1993 01:25:32 c2950-i6q4l2-mz.121-9.EA1d.bin
50. 3 -rwx 840 Mar xx 1993 09:20:09 vlan.dat
51.
52. !--- This vlan.dat file stores user-configured VLANs.
53.
54. 4 -rwx 2491435 Mar 08 1993 16:14:13 c2950-mvr.bin
55. 6 -rwx 42 Mar 01 1993 00:07:35 env_vars
56. 7 -rwx 109 Mar eleven 1993 01:23:56 info
57. 8 drwx 640 Mar eleven 1993 01:26:35 html
58. 19 -rwx 109 Mar eleven 1993 01:26:35 info.ver
59.
60. 7741440 bytes full (1088512 bytes free)
Switch#
61. Delete the VLAN data from Flash or NVRAM, in addition to reload the switch.
Note: On the 6500/6000 in addition to 4500/4000 running early on versions of Cisco IOS Software, the delete ascendency may non work. Instead, you lot must upshot the ascendency erase const_nvram: or the ascendency erase cat4000_flash:. Do non specify the vlan.dat file inward the ascendency syntax. However, on afterwards versions of Cisco IOS Software, the delete const_nvram:vlan.dat ascendency plant for the 6500/6000, in addition to the delete cat4000_flash:vlan.dat ascendency plant on the 4500/4000.
Cat2950# delete flash:vlan.dat
Delete filename [vlan.dat]?
!--- Press Enter.
Delete flash:vlan.dat? [confirm]y
Cat2950# reload
Proceed amongst reload? [confirm]y
4w5d: %SYS-5-RELOAD: Reload requested
62. After reload, cheque the VLAN data amongst the show vlan command.
The user-configured VLANs no longer look inward the ascendency output. Only factory-default VLAN data is on the switch.
Cat2950# show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4
Fa0/5, Fa0/6, Fa0/7, Fa0/8
Fa0/9, Fa0/10, Fa0/11, Fa0/12
Fa0/13, Fa0/14, Fa0/15, Fa0/16
Fa0/17, Fa0/18, Fa0/19, Fa0/20
Fa0/21, Fa0/22, Fa0/23, Fa0/24
1002 fddi-default active
1003 token-ring-default active
1004 fddinet-default active
1005 trnet-default active
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 tr 101003 1500 - - - - - 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trnet 101005 1500 - - - IBM - 0 0
Switch#
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