cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
767
Views
5
Helpful
2
Replies

ASA image recover too slow

kbcit
Level 1
Level 1

hi everyone,

for some reason, my ASA lost the ios image, so i want to recover. what I did:

in rommon mode,

rommon.png

 

BUT !!! too slow, I suspect the rate is 9600 only, even I used the gigabit port

if I upload a bin file which over 100M, it will take days......

this is not work in the real DR situation, is there any way I can really use in DR situation?

thanks!

2 Replies 2

Seb Rupik
VIP Alumni
VIP Alumni

Hi there,

TFTP uses IP so the 9600 baud rate does not come into play.

TFTP transfers and acknowledges one block of data at a time, this is very slow. It can be sped up by increasing the the block size, providing the sending server supports it. Try increasing it with the command:

 

rommon #1 > TFTP_BLKSIZE 1428

 

...then restart the transfer.

 

cheers,

Seb.

 

Moaz.Elzhrawey
Level 1
Level 1

If you changed the Block size and still slow, make sure you're connecting back to back with the firewall with proven and tested UTP cable, sometimes slowness caused by partially fault cables.

Moaz Elzhrawey
Solutions Architect, CCIE 2x RS | DC, VCP 3x NV | DCV | DTM
+966 596822551
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: