difficulty in re-installing ios on cisco 2821

[AlfredNketia]

I'm  trying to install ios into my  cisco 2821 which boots in rommon.  Apparently the ios is corrupted, I  have set the IP_ADDRESS,  IP_SUBNET_MASK, DEFAULT_GATEWAY, TFTP_SERVER,  TFTP_FILE but anytime I  issue the 'tftpdnld' and confirm to continue,  the process will time out  give this error message

"  ...........
ARP: address resolution for 10.203.8.49 timed out.
ARP failed with failure code 1.  TFTP transfer aborted.

TFTP: Operation terminated prematurely.    "

What may have gone wrong. Please help me out.

[Leo Laohoo]

Why don't you try to eject the CF and copy the IOS into the CF using a card reader?

[Preston Chilcote]

Many cisco devices have a restriction that tftpdnld will only work on the first LAN port:

http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008015bf9e.shtml

"This document explains how to download a software  image to a Cisco 2600/2800/3800 Series Router using Trivial File  Transfer Protocol (TFTP) over the first LAN port using the ROMmon tftpdnld command."