diff --git a/packages/node/meshnet_node/cli.py b/packages/node/meshnet_node/cli.py
index b9632fa..6b81c63 100644
--- a/packages/node/meshnet_node/cli.py
+++ b/packages/node/meshnet_node/cli.py
@@ -90,6 +90,19 @@ def _run_node(cfg: dict) -> None:
         )
 
 
+def _resolve_model_flags(
+    model: str | None,
+    model_id: str | None,
+) -> tuple[str | None, str | None]:
+    """Return (model_name, hf_repo_or_none) from --model / --model-id flags."""
+    explicit = model_id or model
+    if not explicit:
+        return None, None
+    if "/" in explicit:
+        return explicit.split("/")[-1], explicit
+    return explicit, None
+
+
 def _first_available_port(host: str, start: int = 7000, attempts: int = 100) -> int:
     """Return the first TCP port bindable on host, starting at start."""
     bind_host = "" if host == "0.0.0.0" else host
@@ -122,9 +135,10 @@ def _cmd_default(args) -> int:
 
     # Apply CLI overrides on top of saved config
     overrides: dict = {}
-    if args.model:
-        overrides["model_hf_repo"] = args.model
-        overrides["model_name"] = args.model.split("/")[-1]
+    model_name, hf_repo = _resolve_model_flags(args.model, getattr(args, "model_id", None))
+    if model_name is not None:
+        overrides["model_name"] = model_name
+        overrides["model_hf_repo"] = hf_repo or ""
     if args.quantization:
         overrides["quantization"] = args.quantization
     if args.download_dir:
@@ -215,16 +229,15 @@ def _cmd_start(args) -> int:
     if args.tracker:
         cfg["tracker_url"] = args.tracker
     cfg["port"] = args.port if args.port is not None else _first_available_port(args.host)
-    model = args.model or cfg.get("model_hf_repo") or cfg.get("model_name") or None
-    if args.model_id is None and model and "/" in model:
-        cfg["model_hf_repo"] = model
-        cfg["model_name"] = model.split("/")[-1]
-    else:
-        cfg["model_name"] = model
+    model_name, hf_repo = _resolve_model_flags(
+        args.model or cfg.get("model_hf_repo") or cfg.get("model_name") or None,
+        args.model_id,
+    )
+    if model_name is not None:
+        cfg["model_name"] = model_name
+        cfg["model_hf_repo"] = hf_repo or ""
     cfg["quantization"] = args.quantization
     cfg["host"] = args.host
-    if args.model_id:
-        cfg["model_hf_repo"] = args.model_id
     if args.shard_start is not None:
         cfg["shard_start"] = args.shard_start
     if args.shard_end is not None:
@@ -242,7 +255,7 @@ def _cmd_start(args) -> int:
             tracker_url=cfg["tracker_url"],
             port=cfg["port"],
             model=cfg["model_name"],
-            model_id=cfg.get("model_hf_repo"),
+            model_id=cfg.get("model_hf_repo") or None,
             shard_start=cfg.get("shard_start"),
             shard_end=cfg.get("shard_end"),
             quantization=cfg["quantization"].replace("bf16", "bfloat16"),
@@ -288,7 +301,8 @@ def main() -> None:
     )
 
     # Flags that apply to the no-subcommand (default) path
-    parser.add_argument("--model", metavar="HF_REPO", help="HuggingFace repo ID to serve")
+    parser.add_argument("--model", metavar="MODEL", help="Model name or HuggingFace repo ID to serve")
+    parser.add_argument("--model-id", metavar="MODEL", help="Alias for --model (catalog name or HuggingFace repo)")
     parser.add_argument("--quantization", "-q", choices=["bf16", "int8", "nf4", "bfloat16"],
                         help="Quantization level")
     parser.add_argument("--download-dir", metavar="PATH", help="Model download directory")
@@ -329,8 +343,8 @@ def main() -> None:
     start_cmd = subparsers.add_parser("start", help="Start node (legacy flags)")
     start_cmd.add_argument("--tracker")
     start_cmd.add_argument("--port", type=int)
-    start_cmd.add_argument("--model")
-    start_cmd.add_argument("--model-id", help="HuggingFace repo ID")
+    start_cmd.add_argument("--model", help="Model name or HuggingFace repo ID")
+    start_cmd.add_argument("--model-id", help="Alias for --model (catalog name or HuggingFace repo)")
     start_cmd.add_argument("--shard-start", type=int)
     start_cmd.add_argument("--shard-end", type=int)
     start_cmd.add_argument("--quantization", choices=["auto", "bfloat16", "int8", "nf4", "bf16"], default="auto")
diff --git a/packages/node/meshnet_node/startup.py b/packages/node/meshnet_node/startup.py
index 61e950a..6484c25 100644
--- a/packages/node/meshnet_node/startup.py
+++ b/packages/node/meshnet_node/startup.py
@@ -633,8 +633,11 @@ def run_startup(
     if probationary_line is not None:
         print(f"  {probationary_line}", flush=True)
 
+    pinned_shard_start = shard_start
+    pinned_shard_end = shard_end
+    user_pinned_shard = pinned_shard_start is not None or pinned_shard_end is not None
+
     if model_id:  # treat "" the same as None — no explicit model given
-        user_pinned_shard = shard_start is not None or shard_end is not None
         full_sources: list[dict] = []
         # Auto-detect shard range from model config if not explicitly provided
         if shard_start is None or shard_end is None:
@@ -773,8 +776,8 @@ def run_startup(
             flush=True,
         )
         return node
-    if shard_start is not None or shard_end is not None:
-        raise ValueError("--shard-start / --shard-end require --model-id")
+    if user_pinned_shard and not model:
+        raise ValueError("--shard-start / --shard-end require --model")
 
     # 3a. Auto-join: query tracker for network-wide HF model assignment.
     # Skipped when the user explicitly requested a model — the shard-assignment
@@ -933,14 +936,25 @@ def run_startup(
         print(f"  ERROR: Cannot reach tracker at {tracker_url}: {exc}", file=sys.stderr, flush=True)
         raise
 
-    shard_start: int = assignment["shard_start"]
-    shard_end: int = assignment["shard_end"]
+    shard_start = assignment["shard_start"]
+    shard_end = assignment["shard_end"]
+    if user_pinned_shard:
+        if pinned_shard_start is not None:
+            shard_start = pinned_shard_start
+        if pinned_shard_end is not None:
+            shard_end = pinned_shard_end
     assigned_model: str = assignment.get("model", model)
     hf_repo: str | None = assignment.get("hf_repo")
     peers: list[dict] = assignment.get("peers", [])
     model_sources: list[dict] = [] if tracker_source_disabled else assignment.get("model_sources", [])
     assignment_bytes_per_layer = _assignment_bytes_per_layer(assignment, quantization)
-    print(f"  Shard: layers {shard_start}-{shard_end} of {assigned_model}", flush=True)
+    if user_pinned_shard:
+        print(
+            f"  Shard: layers {shard_start}-{shard_end} of {assigned_model} (pinned)",
+            flush=True,
+        )
+    else:
+        print(f"  Shard: layers {shard_start}-{shard_end} of {assigned_model}", flush=True)
 
     # 4. Download shard
     print("Downloading shard...", flush=True)
@@ -1002,6 +1016,7 @@ def run_startup(
         "hardware_profile": hw,
         "wallet_address": address,
         "score": 1.0,
+        "managed_assignment": not user_pinned_shard,
         **registration_capabilities,
         **relay_fields,
     }
diff --git a/tests/test_mining_cli.py b/tests/test_mining_cli.py
index 2161a0a..a27a098 100644
--- a/tests/test_mining_cli.py
+++ b/tests/test_mining_cli.py
@@ -388,6 +388,107 @@ def test_legacy_start_treats_repo_model_as_model_id(monkeypatch):
     assert captured["model_id"] == "Qwen/Qwen2.5-0.5B-Instruct"
 
 
+def test_legacy_start_catalog_model_with_pinned_shards(monkeypatch):
+    """Catalog model names accept --shard-start/--shard-end without --model-id."""
+    from meshnet_node.cli import main
+
+    captured = {}
+
+    def fake_run_startup(*args, **kwargs):
+        captured.update(kwargs)
+        class _FakeNode:
+            chat_completion_count = 0
+            def stop(self): pass
+        return _FakeNode()
+
+    monkeypatch.setattr(sys, "argv", [
+        "meshnet-node", "start",
+        "--tracker", "http://192.168.0.179:8080",
+        "--model", "Qwen3.6-35B-A3B",
+        "--shard-start", "0",
+        "--shard-end", "44",
+        "--port", "0",
+    ])
+
+    with patch("meshnet_node.startup.run_startup", side_effect=fake_run_startup):
+        with patch("time.sleep", side_effect=KeyboardInterrupt):
+            try:
+                main()
+            except SystemExit as exc:
+                assert exc.code == 0
+
+    assert captured["model"] == "Qwen3.6-35B-A3B"
+    assert captured["model_id"] is None
+    assert captured["shard_start"] == 0
+    assert captured["shard_end"] == 44
+
+
+def test_legacy_start_model_id_alias_for_catalog_name(monkeypatch):
+    """--model-id with a catalog name routes through the tracker preset path."""
+    from meshnet_node.cli import main
+
+    captured = {}
+
+    def fake_run_startup(*args, **kwargs):
+        captured.update(kwargs)
+        class _FakeNode:
+            chat_completion_count = 0
+            def stop(self): pass
+        return _FakeNode()
+
+    monkeypatch.setattr(sys, "argv", [
+        "meshnet-node", "start",
+        "--tracker", "http://192.168.0.179:8080",
+        "--model-id", "Qwen3.6-35B-A3B",
+        "--port", "0",
+    ])
+
+    with patch("meshnet_node.startup.run_startup", side_effect=fake_run_startup):
+        with patch("time.sleep", side_effect=KeyboardInterrupt):
+            try:
+                main()
+            except SystemExit as exc:
+                assert exc.code == 0
+
+    assert captured["model"] == "Qwen3.6-35B-A3B"
+    assert captured["model_id"] is None
+
+
+def test_legacy_start_hf_repo_with_pinned_shards(monkeypatch):
+    """HF repo --model with pinned shards still enters the torch startup path."""
+    from meshnet_node.cli import main
+
+    captured = {}
+
+    def fake_run_startup(*args, **kwargs):
+        captured.update(kwargs)
+        class _FakeNode:
+            chat_completion_count = 0
+            def stop(self): pass
+        return _FakeNode()
+
+    monkeypatch.setattr(sys, "argv", [
+        "meshnet-node", "start",
+        "--tracker", "http://192.168.0.179:8081",
+        "--model", "Qwen/Qwen2.5-0.5B-Instruct",
+        "--shard-start", "12",
+        "--shard-end", "23",
+        "--port", "0",
+    ])
+
+    with patch("meshnet_node.startup.run_startup", side_effect=fake_run_startup):
+        with patch("time.sleep", side_effect=KeyboardInterrupt):
+            try:
+                main()
+            except SystemExit as exc:
+                assert exc.code == 0
+
+    assert captured["model"] == "Qwen2.5-0.5B-Instruct"
+    assert captured["model_id"] == "Qwen/Qwen2.5-0.5B-Instruct"
+    assert captured["shard_start"] == 12
+    assert captured["shard_end"] == 23
+
+
 def test_legacy_start_falls_back_to_env_tracker_and_model(monkeypatch):
     """`meshnet-node start` uses env defaults when tracker/model flags are omitted."""
     import importlib
diff --git a/tests/test_node_startup.py b/tests/test_node_startup.py
index 269d0c4..d70332d 100644
--- a/tests/test_node_startup.py
+++ b/tests/test_node_startup.py
@@ -1603,6 +1603,47 @@ def test_preset_model_startup_starts_heartbeat(tmp_path, monkeypatch):
         tracker.stop()
 
 
+def test_preset_model_startup_honors_pinned_shard_range(tmp_path, monkeypatch):
+    """Explicit --shard-start/--shard-end override tracker auto-assignment."""
+    import meshnet_node.startup as startup_mod
+
+    monkeypatch.setattr(
+        startup_mod,
+        "detect_hardware",
+        lambda: {"device": "cpu", "gpu_name": None, "vram_mb": 0, "ram_mb": 16 * 1024},
+    )
+    heartbeat_calls = []
+    monkeypatch.setattr(
+        startup_mod,
+        "_start_heartbeat",
+        lambda *args, **kwargs: heartbeat_calls.append((args, kwargs)),
+    )
+
+    tracker = TrackerServer(model_presets={"stub-model": {"layers_start": 0, "layers_end": 15}})
+    tracker_port = tracker.start()
+    tracker_url = f"http://127.0.0.1:{tracker_port}"
+    try:
+        node = run_startup(
+            tracker_url=tracker_url,
+            model="stub-model",
+            shard_start=0,
+            shard_end=5,
+            wallet_path=tmp_path / "wallet.json",
+            cache_dir=tmp_path / "shards",
+        )
+        try:
+            assert len(heartbeat_calls) == 1
+            args, kwargs = heartbeat_calls[0]
+            reg_payload = args[2]
+            assert reg_payload["shard_start"] == 0
+            assert reg_payload["shard_end"] == 5
+            assert reg_payload["managed_assignment"] is False
+        finally:
+            node.stop()
+    finally:
+        tracker.stop()
+
+
 def test_real_model_startup_registers_downloaded_inventory_without_checksum(
     tmp_path,
     monkeypatch,