Experiencing extremely slow transfer times using scp to transfer an IOS XE image to an ASR-1002(X). Have attempted using three different routers and two separate servers. In all cases scp is extremely slow. A 380MB image is still transferring after three hours.
Transferring the same file using tftp takes just over 5 minutes. I have attempted the transfer using a Windows and a Linux scp server. In addition, I have scp'ed files to each of these servers to ensure they were operating properly - in both cases the servers can transfer the file in minutes.
-Do not believe it is an issue with the protocol itself or implementation on the servers: other scp transfers to the servers run quickly
-Research on this topic returned one response that the issue was due to writing the file to a flash filesystem. I have doubts about this since tftp transfers orders of magnitude more quickly, writing to the same filesystem.
I'm researching to see if there is a bug in these versions of code.
Next step is to run a packet capture during a transfer to look for clues. Any experience/solutions to this issue appreciated!
-Ed
