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switch 6509 in rommon mode after power outage

Level 1
Level 1

hi everyone,

We have a cisco catalyst 6509 with Supervisor Engine . After power outage, the switch always start in Rommon mode.

Configuration register is 0X2102, 

we want to it always start in normal mode. What should i do?

many thanks,

3 Replies 3

Raju Sekharan
Cisco Employee
Cisco Employee

Can you paste the following outputs

show bootvar

Show ver

remote command switch show ver


VIP Alumni
VIP Alumni

  When it is in rommon see what the config register says.  You have switch processor rommon and you have the msfc rommon . If you are checking it when it's already booted completely up then that's msfc . The switch processor rommon must also be 0x2102 , I have seen where it comes right from the factory incorrect.  Also verify your boot statements are correct .  When it boots into rommon , enter confreg 0x2102 , this changes the supervisor config register and then reset  . See if that helps.

Level 1
Level 1

Thanks Raju and glen

after typing boot from the rommon mode the switch comes up and working. below is the output of some commands:

SW#sh bootvar
BOOT variable = sup-bootflash:,1
CONFIG_FILE variable =
BOOTLDR variable =
Configuration register is 0x2102

SW#sh ver
Cisco Internetwork Operating System Software
IOS (tm) s72033_rp Software (s72033_rp-PK9SV-M), Version 12.2(18)SXD7, RELEASE S

System returned to ROM by bus error at PC 0x40381220, address 0x0 at 16:41:55 PD
T Fri Jun 30 2006 (SP by power-on)
System image file is "sup-bootflash:s72033-pk9sv-mz.122-18.SXD7.bin"
cisco WS-C6506-E (R7000) processor (revision 1.1) with 458720K/65536K bytes of m
Processor board ID SAL1026T4KV
SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache
Last reset from s/w reset
X.25 software, Version 3.0.0.
Bridging software.
34 Virtual Ethernet/IEEE 802.3  interface(s)
50 Gigabit Ethernet/IEEE 802.3 interface(s)
1917K bytes of non-volatile configuration memory.
8192K bytes of packet buffer memory.

65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102

this is happening everytime there is power outage, the problem is that we have remote sites with same configuration so if this happened it need me to access the switch console, so can you help what is the cause of this and how to fix?

many thanks

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