Effective, Saturday, June 27, 2009 CME Group will be changing multicast source IPs. If a firewall or network device is configured with the source IP information, please modify your configuration to use the entire range of eligible addresses. Port and multicast addresses for each Market Data Platform channel is available in the config.xml file at ftp://ftp.cmegroup.com/, as outlined in the Core Functionality module of the FIX/FAST SDK.
As a reminder, CME Group requires that customers configure servers to connect to the Market Data Platform ports and multicast addresses for each desired channel. CME Group does not recommend restricting data flow via the source IPs, as these may change without notice.
Please contact Market Data Operations (MDO) at firstname.lastname@example.org, if you have any questions concerning this notice.