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-rw-r--r--tools/pkt_gen/trex/trex.py11
1 files changed, 8 insertions, 3 deletions
diff --git a/tools/pkt_gen/trex/trex.py b/tools/pkt_gen/trex/trex.py
index 5ce87b1d..cfe54b78 100644
--- a/tools/pkt_gen/trex/trex.py
+++ b/tools/pkt_gen/trex/trex.py
@@ -126,9 +126,14 @@ class Trex(ITrafficGenerator):
'T-Rex: Cannot locate Trex program at %s within %s' \
% (self._trex_host_ip_addr, self._trex_base_dir))
- self._stlclient = STLClient(username=self._trex_user, server=self._trex_host_ip_addr,
- verbose_level=0)
- self._stlclient.connect()
+ try:
+ self._stlclient = STLClient(username=self._trex_user, server=self._trex_host_ip_addr,
+ verbose_level=0)
+ self._stlclient.connect()
+ except STLError:
+ raise RuntimeError('T-Rex: Cannot connect to T-Rex server. Please check if it is '
+ 'running and that firewall allows connection to TCP port 4501.')
+
self._logger.info("T-Rex: Trex host successfully found...")
def disconnect(self):