diff --git a/scripts/perf-tests/test/test_run_perf_tests.sh b/scripts/perf-tests/test/test_run_perf_tests.sh
index cce59e2..1c54230 100755
--- a/scripts/perf-tests/test/test_run_perf_tests.sh
+++ b/scripts/perf-tests/test/test_run_perf_tests.sh
@@ -89,6 +89,7 @@ if grep -nE 'ASTFIPGenDist\(ip_range=' "$TCP_PY" | grep -qvE 'ip_range=\['; then
 else
     ok "all ASTFIPGenDist ip_range args are lists"
 fi
+if grep -qE 'glob=ASTFIPGenDist' "$TCP_PY"; then bad "ASTFIPGen glob must be ASTFIPGenGlobal, not ASTFIPGenDist"; else ok "ASTFIPGen glob is ASTFIPGenGlobal (not ASTFIPGenDist)"; fi
 
 # ── 3. TRex mode selection: stl for UDP, astf for any *-tcp ───────────────────
 echo "== TRex STL/ASTF mode selection =="
diff --git a/scripts/perf-tests/trex/run_tcp_benchmark.py b/scripts/perf-tests/trex/run_tcp_benchmark.py
index 9c8888f..fc6a0bd 100644
--- a/scripts/perf-tests/trex/run_tcp_benchmark.py
+++ b/scripts/perf-tests/trex/run_tcp_benchmark.py
@@ -28,6 +28,7 @@
 from trex.astf.api import ASTFClient, ASTFProfile
 from trex.astf.trex_astf_profile import (
     ASTFIPGenDist,
+    ASTFIPGenGlobal,
     ASTFIPGen,
     ASTFTCPClientTemplate,
     ASTFTCPServerTemplate,
@@ -54,8 +55,10 @@ def build_tcp_profile(payload_size, src_ip, dst_ip, dst_port):
     # "Bad IP range ... Range should contain two IPs".
     ip_gen_c = ASTFIPGenDist(ip_range=[src_ip, src_ip], distribution="seq")
     ip_gen_s = ASTFIPGenDist(ip_range=[dst_ip, dst_ip], distribution="seq")
+    # ASTFIPGen.glob must be an ASTFIPGenGlobal (NOT an ASTFIPGenDist); dist_client
+    # / dist_server are the ASTFIPGenDist ranges above.
     ip_gen = ASTFIPGen(
-        glob=ASTFIPGenDist(ip_range=["0.0.0.0", "0.0.0.0"], distribution="seq"),
+        glob=ASTFIPGenGlobal(ip_offset="1.0.0.0"),
         dist_client=ip_gen_c,
         dist_server=ip_gen_s,
     )
@@ -63,6 +66,7 @@ def build_tcp_profile(payload_size, src_ip, dst_ip, dst_port):
     template = ASTFTemplate(
         client_template=ASTFTCPClientTemplate(
             program=prog_c,
+            ip_gen=ip_gen,
             port=dst_port,
         ),
         server_template=ASTFTCPServerTemplate(