Client makes request to web server using VIP over port 80. Load balancer forwards request to web server on port 9000.
Web server receives request from client (via LB) on port 9000.
Web server makes request to App server via port 8080.
App Server responds to web server via port 8080 with 302 Redirect to http://dastst-msw-01v.ceg.corp.net:8080/login.jsp?REDIRECTED_FROM=%2F
Web server responds to client via load balancer over port 9000 with 302 Redirect to http://test-dri.bge.com:9000/login.jsp?REDIRECTED_FROM=%2F
Load balancer forwards the 302 Redirect exactly as above over port 80 to the client.
What they don't like is that the load balancer forwards the 302 redirect exactly as it receives it, and doesn't change the port to 80.