[c-nsp] Boot from TFTP

Fri Jun 24 16:23:54 EDT 2011

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-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