Forum Discussion
NimbostratusInbound ftp stopped working after upgraded LTM to 11.4.1 code from 9.4.8 code .
Folks
I am in a situation where inbound ftp is not working for clients after upgrading from 9.4.8 to 11.4.1 We are using standard ftp profile. Clients when they are try to get multiple files they get the following message
Unable to build data connections . Address already in use. Has anybody encountered this and recommend a solution. I have been with f5 for 3 days and no solution. We tried everything from snat pool to disabling CMP . Enabling CMP back.
6 Replies
shaggyIn the virtual server configuration, try changing "source port" to "preserve strict"
I've seen this issue before, but unfortunately it has been long enough that I only vaguely remember a possible solution and not the reasoning behind it. F5 has some warnings for this setting - https://support.f5.com/kb/en-us/solutions/public/11000/000/sol11003.html
- Kirit_Patel_521We tried preserve restrict and Change also . My question if it works in 9.4.8 it should work in 11.4.1? no?
- shaggyheh, that's a huge difference in code level - two major revisions, plus v9 was f5's first non-v4 release. can you list your vs, ftp profile, and tcp profile configs? is this active or passive ftp? Are you using default ftp ports on the server-side (20/21)?
shaggy_121467Cumulonimbus
In the virtual server configuration, try changing "source port" to "preserve strict"
I've seen this issue before, but unfortunately it has been long enough that I only vaguely remember a possible solution and not the reasoning behind it. F5 has some warnings for this setting - https://support.f5.com/kb/en-us/solutions/public/11000/000/sol11003.html
- Kirit_Patel_521We tried preserve restrict and Change also . My question if it works in 9.4.8 it should work in 11.4.1? no?
- shaggy_121467heh, that's a huge difference in code level - two major revisions, plus v9 was f5's first non-v4 release. can you list your vs, ftp profile, and tcp profile configs? is this active or passive ftp? Are you using default ftp ports on the server-side (20/21)?
