TT CME Gateway System Administration Manual - Trading ...

7
Using Connection Quality Tools
CME Gateway System Administration Manual 119
Trading Technologies International, Inc.
Troubleshooting
Overview For the MDP connection, the CME Gateway receives FIX/FAST messages via two
connections labeled Feed A and Feed B. The Connection Quality Tools help
troubleshoot and prevent problems associated with downed or improperly
connected feeds.
There are two Connection Quality Tools available:
• TT FAST Tester - quickly checks the standard MDP connection (Feeds A
and B) between the CME Gateway and the exchange.
• TT Bandwidth Tester - checks the standard MDP connection (Feed A and B)
for packet loss and latency.
Before You Begin You can start the TT FAST Tester and TT Bandwidth Tester by double-clicking the
executable file (.exe.) located in the :tt\Exchange-Flavor
directory. The filenames are tt_fast_tester.exe and tt_fast_bandwidth.exe.
Before starting each test, you must edit the following in the hostinfo.cfg file:
• Configure the [price_session] section with your custom connection
values.
• Add the CME Group-facing NIC to each NetworkInterface parameter.
• Create a copy of the hostinfo.cfg file with the name CMEHostinfo.cfg. The
TT FAST Tester and TT Bandwidth Tester use the settings in this file to
verify connectivity.
Executing the Tests The TT FAST Tester runs a test for each channel along the NIC (Network Interface
Card) defined in the hostinfo.cfg file. The utility checks the heartbeat the
exchange sends at least every 60 seconds. Therefore, each channel test may take
up to 65 seconds. For more info on Heartbeating, refer to “Aconfig and
Environment Setup” in the TT Gateways Architecture System Administration
Manual Version 7.X.
In addition to testing the overall status of the connection, the TT Bandwidth Tester
also checks for packet loss and packet latency. Due to the extensive nature of this
test, the utility runs for approximately one hour. If stopped before completion, the
utility can fail to create a proper log file.
To run a test, double-click its executable. Once complete, the MDP Quality Tools
create the log files tt_fast_tester.out and tt_fast_bandwidth.out in the
:tt\logfiles directory.
TT FAST Tester Results The following illustrates the results the TT FAST Tester writes to the
tt_fast_tester.out logfile:
To interpret the TT FAST Tester results:
1. The utility prints out information regarding which NICs (Network Interface
Cards) it tests.
Example:
Interface: feeda using 172.20.16.210
Interface: feedb using 172.20.28.138