Several environment variables affect xorp:
| Variable | Definition |
|---|---|
| XORP_SENDER_KEEPALIVE_TIME | XRL keep-alive timer in seconds. |
| XORP_LISTENER_KEEPALIVE_TIME | XRL request keep-alive timer in seconds. |
| XRLDISPATCHTRACE | Enable XRL dispatcher tracing if this variable is defined. |
| XRLTRACE | Enable some xrl debugging messages in the xrl_router logic. |
| AIOTRACE | Enable some asyncio debugging messages. |
| ELOOPTRACE | Enable some event-loop debugging messages. |
| XORP_FINDER_SERVER_ADDRESS | Determines where xorp xrl finder logic listens. |
| XORP_FINDER_SERVER_PORT | Determines where xorp xrl finder logic listens. |
| XORP_RIB_STATIC_DISTANCE | Configure distance for static routes. |
| XORP_FINDER_CONNECT_TIMEOUT_MS | How long to wait for connection to finder. When running under valgrind or with mis-configured 'winbind' or similar slow situation, you may need to set this to a large value to over-ride the defaults. |
| XORP_USE_RRAS | Specific for Windows. Set only, if You planning use XORP feature “xorprtm dll” / “RTMv2” on computer with RRAS and installed and configured “xorprtm4.dll” and( or) “xorprtm6.dll”. See more info in source code directory “xorp/contrib/xorprtm”. |