I getting the same error.
"Error: 14151, Severity: 18, State: 1."
" TCPIP socket error has occured (10054): An existing connection was forcibly closed by the remote host. SQLSTATE: 08S01, SQLCODE: 10054"
Replication has been setup between SQL Server 2005 and DB2 tables on Mainframe.
This happens every time when the data gets replicated between the publisher and the subscriber.
[font=Arial]Prakash Bhojegowda MCSE, MCSA (SQL2012)[/font]