FTP protocol error on 7600

[Mahesh Gohil]

Hello experts,

When I tried to copy IOS from one of the server I get below error

%Error opening ftp://x.x.x.x/cisco/122/c7600-fpd-pkg.122-33.SRE4.pkg(Protocol error)

I run debug and getting nothing. (Only single below line)

----------------------------------------------

Oct 13 09:10:10.489 UTC: FTP:

----------------------------------------------

Here is debug output from node where I am able to copy IOS from same server

---------------------------------------------------------------------------

Accessing

ftp://x.x.x.x/cisco/122/c7600-fpd-pkg.122-33.SRE4.pkg

...

Oct 13 08:x.x.x.x UTC: FTP: 220 (vsFTPd 2.0.4)

Oct 13 08:x.x.x.x UTC: FTP: ---> USER anonymous

Oct 13 08:x.x.x.y UTC: FTP: 331 Please specify the password.

Oct 13 08:x.x.x.y UTC: FTP: ---> PASS router@cisco.com

Oct 13 08:57:42.890 UTC: FTP: 230 Login successful.

Oct 13 08:57:42.890 UTC: FTP: ---> TYPE I

Oct 13 08:57:43.202 UTC: FTP: 200 Switching to Binary mode.

Oct 13 08:57:43.202 UTC: FTP: ---> PORT 57,35,1,151,152,177

Oct 13 08:57:43.510 UTC: FTP: 200 PORT command successful. Consider using PASV.

Oct 13 08:57:43.510 UTC: FTP: ---> RETR cisco/122/c7600-fpd-pkg.122-33.SRE4.pkg

Oct 13 08:57:44.074 UTC: FTP: 150 Opening BINARY mode data connection for cisco/122/c7600-fpd-pkg.122-33.SRE4.pkg (41584640 bytes).

--------------------------------------------------------------------------.

Any idea.

Regards

Mahesh

[nkarpysh]

Mahesh,

What is your current IOS on router?

Nik,

[Mahesh Gohil]

Thanks for your reply.

IOS where able to copy is: SRE2

IOS where not able to copy is: 12.2(33)SRD3.

Regards

Mahesh

[nkarpysh · Accepted solution]

It seems you are hitting this DDTS:

CSCta46107    Not able to FTP through router using 12.4(24)Tx

Details:

Symptoms: FTP transfers from FTP servers on internet to router fail, with

"Connection timed out" or protocol errors.

Conditions: The symptom is observed with the following conditions:

- Cisco 877, Cisco 1801, Cisco 1841 routers.

- Cisco IOS Release 12.4(24)T and 12.4(24)T1.

Workaround: There is no workaround.

Further Problem Description: Using TFTP or SCP works fine.

It was found that not only above platform affected. 7600 as well.

For SR relases it is fixed on SRD4. That explains why you have issue on SRD3 and not on SRE.

Hope this helps.

Nik