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Slow TFTP Speed while uploading to router

slow tftp tftp gns3 router

8 replies to this topic

#1 endit

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Posted 30 April 2013 - 07:26 PM

why uploading to a router in GNS3 is very very slow? I tested it with c7200 c3600 c3700 routers and c7200 IOS 15.2 too, it takes about an hour to upload a 30MB file to the router, is it normal ? I tested with a Gigabit interface too. I used 3CDaemon for TFTP server, any one knows about it ? any new solutions to upload a file much faster to the router ?

#2 telemetrik

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Posted 18 July 2013 - 10:19 AM

I have the same problem. I tested it with asa and c3700.

#3 wolfbaron

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Posted 02 January 2016 - 08:16 PM

same problem always slow..trying to get an asdm image on a new v9.x asa in gns3...extremely slow tftp transfer

#4 adobemaster

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Posted 05 January 2016 - 07:41 PM

I don't know why, but try to disable any installed firewall including the one from windows.

#5 drtrauma

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Posted 15 January 2016 - 06:22 PM

Hi
Try uploading with another options FTP or HTTP(s).
In real scenario FTP works better than FTP
https://supportforums.cisco.com/document/48501/asa-upgrade-different-ways-load-files-flash

#6 rzld

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Posted 04 February 2016 - 12:04 PM

TFTP is slow transfer, for better transfer use the FTP

#7 hatim

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Posted 22 February 2016 - 01:04 PM

Try ip tftp blocksize 8192 . I copied 300 MB iso on 3650 in 136 sec approx .

#8 hatim

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Posted 22 February 2016 - 01:04 PM

http://www.cisco.com/c/en/us/support/docs/wireless/5760-wireless-lan-controller/117636-technote-tftpfile-00.html

3850#copy tftp flash:
Address [172.16.108.26]?
Source filename [IOS/3850/cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin
Destination filename [cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin]?
Accessing tftp://*****@172.16.108.26/cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin...
Loading cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin from 172.16.108.26 (via Vlan1):
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!




[OK - 257243236 bytes]

257243236 bytes copied in 1416.360 secs (181623 bytes/sec)
The results show that the 245MB .bin file was transferred in 1416.360 seconds (which is equal to 24 minutes). Now, adjust the block size value to the maximum allowed value of 8192.
3850#config t
3850(config)#ip tftp blocksize 8192
3850(config)#end
The same transfer is executed again.
3850#copy tftp flash:
Address [172.16.108.26]?
Source filename [IOS/3850/cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin
Destination filename [cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin]?
Accessing tftp://*****@172.16.108.26/cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin...
Loading cat3k_caa-universalk9.SPA.03.03.02.SE.150-1.EZ2.bin from 172.16.108.26 (via Vlan1):
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 257243236 bytes]

257243236 bytes copied in 124.100 secs (2072871 bytes/sec)
The results are clearly better. The same file is transferred in two minutes with the new block size value.

Edited by hatim, 22 February 2016 - 01:06 PM.


Thanked by 1 Member:
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#9 MrSquirrel

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Posted 23 March 2017 - 07:14 PM

I always use FTP where possible as it's so much more reliable, especially over a WAN.

Never knew you could change the TFTP blocksize, that's good info :)




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