diff --git a/py-json/l3_cxprofile.py b/py-json/l3_cxprofile.py
index d3545a16..bb42d87a 100644
--- a/py-json/l3_cxprofile.py
+++ b/py-json/l3_cxprofile.py
@@ -21,8 +21,8 @@ class L3CXProfile(LFCliBase):
                  lfclient_host,
                  lfclient_port,
                  local_realm,
-                 side_a_min_bps=None,
-                 side_b_min_bps=None,
+                 side_a_min_bps=256000,
+                 side_b_min_bps=256000,
                  side_a_max_bps=0,
                  side_b_max_bps=0,
                  side_a_min_pdu=-1,