[c-nsp] Boot from TFTP

[Juergen Marenda]

You need some RAM...
The (first) image in FLASH will be loaded started and uncompresses itself.
It reads the config file and, after configuring some of the interfaces,
loads the indicated IOS thru tftp into RAM to uncompress and start it.

So you need RAM for two IOS's unziped...
or a smaller, older, not full-featured Image for booting purposes
(for some mashines exist boot-helper images).

Why dont you

- boot device
  and get ip address 
  ...int gig 0/0
  ip address dhcp
  no shut
- ping tftp server 
(ok)
- format flash:  to clear it
  or delete some big files (not the vlan.dat ) to make sufficient space
  for the wanted IOS
- copy tftp:/ip/file flash:/file
- reload from flash
- (probably you want to delete or update the LIST of boot system and boot
config
   cammands, if there is more than 1 of each they all will get executed.)

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Scott Voll
> Sent: Friday, June 24, 2011 10:24 PM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Boot from TFTP
> 
> OK... I'm in a pinch and I need to upgrade a 2821 to a newer 
> ISO and don't
> have time to get a new Flash card.
> 
> So i'm trying to boot from TFTP.  But I keep getting a file 
> to large error
> 
> %DHCP-6-ADDRESS_ASSIGN: Interface GigabitEthernet0/0 assigned 
> DHCP address
> 10.14.1.53, mask 255.255.255.0, hostname Router
> 
> %SYS-6-READ_BOOTFILE_FAIL: tftp://
> 10.14.1.108/c2800nm-advipservicesk9-mz.151-3.T1.bin File read 
> failed -- Not
> enough space.
> 
> %SYS-6-READ_BOOTFILE_FAIL: tftp://
> 10.14.1.108/c2800nm-advipservicesk9-mz.151-3.T1.bin File read 
> failed -- Not
> enough space.
> 
> %SYS-6-READ_BOOTFILE_FAIL: tftp://
> 10.14.1.108/c2800nm-advipservicesk9-mz.151-3.T1.bin File read 
> failed -- Not
> enough space.
> 
> %SYS-3-IMAGE_TOO_BIG: 'tftp://
> 10.14.1.108/c2800nm-advipservicesk9-mz.151-3.T1.bin' is too large for
> available memory (51691544 bytes).
> %SYS-6-READ_BOOTFILE_FAIL: tftp://
> 10.14.1.108/c2800nm-advipservicesk9-mz.151-3.T1.bin File read 
> failed -- Not
> enough space.
> 
> 
> Config looks like this:  boot system tftp://
> 10.14.1.108/c2800nm-advipservicesk9-mz.151-3.T1.bin
> 
> Memory needed is 512mb  I have "Cisco 2821 (revision 53.50) with
> 776192K/10240K bytes of memory."  so I should have enough ram.
> 
> What am I missing?
> 
> Scott
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