There are usually 4-5 available Quote Servers per Order Server. In case of a connection issue on either your end or DAS’ end, the front end will automatically try to switch to another Quote Server. To ensure an automatic Quote Server switch, you should check “Auto Balance Quote Server” instead of specifying a particular Quote Server IP in Network Environment Config. Otherwise, you will have to do so manually: go to File and select Switch Quote Server, then click on 1 of the available servers. You may also switch the Quote Server manually if you feel you are receiving slow quotes during a certain spiked market, although the Order Server can do an auto balance.