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Copy command on IOS 12.2
certmister
Member Posts: 40 ■■□□□□□□□□
in CCNA & CCENT
Hi guys. I am getting strange output on a copy command I'm running on a real Cisco 1721 Router. I am copying from flash to a tftp server (solarwinds) with this command:
copy flash: tftp:
I enter the source filename, ip address of the tftp server and the destination filename. All is fine up to this point but then I expect to see the screen fill with !!!!!!!!! as it transfers the file but I get mixed characters !!.!!!..!!..!!..
What does that mean? I know on a ping you get !!!!! if it suceeds and ..... if it fails but I don't know what both characters mean together.
copy flash: tftp:
I enter the source filename, ip address of the tftp server and the destination filename. All is fine up to this point but then I expect to see the screen fill with !!!!!!!!! as it transfers the file but I get mixed characters !!.!!!..!!..!!..
What does that mean? I know on a ping you get !!!!! if it suceeds and ..... if it fails but I don't know what both characters mean together.
Comments
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Optionstiersten Member Posts: 4,505! = 512 byte chunk was successfully transferred
. = Timeout
If it continues and the copy finishes then ignore it -
OptionsPhildoBaggins Member Posts: 276certmister wrote: »Hi guys. I am getting strange output on a copy command I'm running on a real Cisco 1721 Router. I am copying from flash to a tftp server (solarwinds) with this command:
copy flash: tftp:
I enter the source filename, ip address of the tftp server and the destination filename. All is fine up to this point but then I expect to see the screen fill with !!!!!!!!! as it transfers the file but I get mixed characters !!.!!!..!!..!!..
What does that mean? I know on a ping you get !!!!! if it suceeds and ..... if it fails but I don't know what both characters mean together.
Are you running bit torrent or anything similar on your desktop your are using as the TFTP server? -
Optionscertmister Member Posts: 40 ■■□□□□□□□□! = 512 byte chunk was successfully transferred
. = Timeout
If it continues and the copy finishes then ignore itAre you running bit torrent or anything similar on your desktop your are using as the TFTP server? -
Optionstiersten Member Posts: 4,505certmister wrote: »Wow didn't know that, any idea why it's 512 bytes exactly? The file does transfer over and the command does complete.
! = 10x512 bytes transferred
. = Timeout
O = Packet out of order
e = Erasing
E = Error
V = Verifying
You get timeouts if the network/server/router is busy as it doesn't wait very long for the TFTP UDP packet to turn up. It will just retransmit any missing or corrupted packets as it knows that UDP is unreliable. -
Optionscertmister Member Posts: 40 ■■□□□□□□□□Its actually 10x512. Made a mistake earlier. The packet size is 512 because the TFTP specification uses 512.
! = 10x512 bytes transferred
. = Timeout
O = Packet out of order
e = Erasing
E = Error
V = Verifying
You get timeouts if the network/server/router is busy as it doesn't wait very long for the TFTP UDP packet to turn up. It will just retransmit any missing or corrupted packets as it knows that UDP is unreliable.