diff --git a/netx_api/biz_state/parsers/__init__.py b/netx_api/biz_state/parsers/__init__.py
index d68b75b..9011cba 100644
--- a/netx_api/biz_state/parsers/__init__.py
+++ b/netx_api/biz_state/parsers/__init__.py
@@ -1,22 +1,56 @@
-"""Biz-state CLI parsers: vendor folders + one module per command/metric."""
+"""Biz-state CLI parsers: vendor folders + one module per command/metric.
+
+Layout::
+
+    parsers/
+      common/          # cross-vendor (lldp, vrf_list, vrf_route_summary)
+      zte/             # implemented status tables
+      cisco/           # skeleton — add command modules here
+      huawei/
+      h3c/
+      juniper/
+      nokia/
+      ericsson/
+
+Each vendor package exports ``PARSERS: dict[parser_id, normalize_fn]``.
+"""
 
 from __future__ import annotations
 
 from typing import Any, Callable
 
+from .cisco import PARSERS as _CISCO_PARSERS
 from .common.lldp_neighbors import normalize_lldp_neighbors
 from .common.vrf_list import normalize_vrf_list
 from .common.vrf_route_summary import normalize_vrf_route_summary
+from .ericsson import PARSERS as _ERICSSON_PARSERS
+from .h3c import PARSERS as _H3C_PARSERS
+from .huawei import PARSERS as _HUAWEI_PARSERS
+from .juniper import PARSERS as _JUNIPER_PARSERS
+from .nokia import PARSERS as _NOKIA_PARSERS
 from .zte import PARSERS as _ZTE_PARSERS
 
 NormalizeFn = Callable[..., list[dict[str, Any]]]
 
+# Later vendor packages may override earlier ones for the same parser_id.
+# Prefer moving shared logic to common/ when two vendors implement the same metric.
+_VENDOR_PARSERS: list[dict[str, NormalizeFn]] = [
+    _CISCO_PARSERS,
+    _HUAWEI_PARSERS,
+    _H3C_PARSERS,
+    _JUNIPER_PARSERS,
+    _NOKIA_PARSERS,
+    _ERICSSON_PARSERS,
+    _ZTE_PARSERS,  # last so current ZTE status parsers win on overlaps
+]
+
 _REGISTRY: dict[str, NormalizeFn] = {
     "lldp_neighbors": normalize_lldp_neighbors,
     "vrf_list": normalize_vrf_list,
     "vrf_route_summary": normalize_vrf_route_summary,
-    **_ZTE_PARSERS,
 }
+for _pack in _VENDOR_PARSERS:
+    _REGISTRY.update(_pack)
 
 
 def get_parser(parser_id: str) -> NormalizeFn | None:
diff --git a/netx_api/biz_state/parsers/cisco/__init__.py b/netx_api/biz_state/parsers/cisco/__init__.py
new file mode 100644
index 0000000..69f0964
--- /dev/null
+++ b/netx_api/biz_state/parsers/cisco/__init__.py
@@ -0,0 +1,22 @@
+"""Cisco IOS / NX-OS / XR parsers.
+
+LLDP already works via ``common.lldp_neighbors`` (profile ``parser_id=lldp_neighbors``).
+
+Stub modules (not registered until implemented)::
+
+    interface_brief.py  arp.py  isis_adjacency.py  nd6_cache.py  bgp_peer.py
+
+When ready, import and add to ``PARSERS``. If ``parser_id`` already exists for
+another vendor, prefer a vendor-dispatch in ``common/`` or a prefixed parser_id.
+"""
+
+from __future__ import annotations
+
+from typing import Any, Callable
+
+NormalizeFn = Callable[..., list[dict[str, Any]]]
+
+# Do not register stubs yet — they raise NotImplementedError.
+PARSERS: dict[str, NormalizeFn] = {}
+
+__all__ = ["PARSERS"]
diff --git a/netx_api/biz_state/parsers/cisco/arp.py b/netx_api/biz_state/parsers/cisco/arp.py
new file mode 100644
index 0000000..f5c3688
--- /dev/null
+++ b/netx_api/biz_state/parsers/cisco/arp.py
@@ -0,0 +1,17 @@
+"""Cisco: show ip arp / show arp — TODO implement."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def normalize_arp(
+    *,
+    raw_text: str,
+    vendor: str = "",
+    device_type: str = "",
+    command: str = "",
+    params: dict[str, str] | None = None,
+) -> list[dict[str, Any]]:
+    _ = (raw_text, vendor, device_type, command, params)
+    raise NotImplementedError("cisco arp parser not implemented yet")
diff --git a/netx_api/biz_state/parsers/cisco/bgp_peer.py b/netx_api/biz_state/parsers/cisco/bgp_peer.py
new file mode 100644
index 0000000..8c74d85
--- /dev/null
+++ b/netx_api/biz_state/parsers/cisco/bgp_peer.py
@@ -0,0 +1,17 @@
+"""Cisco: show bgp * summary / show ip bgp summary — TODO implement."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def normalize_bgp_peer(
+    *,
+    raw_text: str,
+    vendor: str = "",
+    device_type: str = "",
+    command: str = "",
+    params: dict[str, str] | None = None,
+) -> list[dict[str, Any]]:
+    _ = (raw_text, vendor, device_type, command, params)
+    raise NotImplementedError("cisco bgp_peer parser not implemented yet")
diff --git a/netx_api/biz_state/parsers/cisco/interface_brief.py b/netx_api/biz_state/parsers/cisco/interface_brief.py
new file mode 100644
index 0000000..003f05e
--- /dev/null
+++ b/netx_api/biz_state/parsers/cisco/interface_brief.py
@@ -0,0 +1,17 @@
+"""Cisco: show ip interface brief / show interfaces status — TODO implement."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def normalize_interface_brief(
+    *,
+    raw_text: str,
+    vendor: str = "",
+    device_type: str = "",
+    command: str = "",
+    params: dict[str, str] | None = None,
+) -> list[dict[str, Any]]:
+    _ = (raw_text, vendor, device_type, command, params)
+    raise NotImplementedError("cisco interface_brief parser not implemented yet")
diff --git a/netx_api/biz_state/parsers/cisco/isis_adjacency.py b/netx_api/biz_state/parsers/cisco/isis_adjacency.py
new file mode 100644
index 0000000..fd6194c
--- /dev/null
+++ b/netx_api/biz_state/parsers/cisco/isis_adjacency.py
@@ -0,0 +1,17 @@
+"""Cisco: show isis neighbors / adjacency — TODO implement."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def normalize_isis_adjacency(
+    *,
+    raw_text: str,
+    vendor: str = "",
+    device_type: str = "",
+    command: str = "",
+    params: dict[str, str] | None = None,
+) -> list[dict[str, Any]]:
+    _ = (raw_text, vendor, device_type, command, params)
+    raise NotImplementedError("cisco isis_adjacency parser not implemented yet")
diff --git a/netx_api/biz_state/parsers/cisco/nd6_cache.py b/netx_api/biz_state/parsers/cisco/nd6_cache.py
new file mode 100644
index 0000000..c044a1b
--- /dev/null
+++ b/netx_api/biz_state/parsers/cisco/nd6_cache.py
@@ -0,0 +1,17 @@
+"""Cisco: show ipv6 neighbors — TODO implement."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def normalize_nd6_cache(
+    *,
+    raw_text: str,
+    vendor: str = "",
+    device_type: str = "",
+    command: str = "",
+    params: dict[str, str] | None = None,
+) -> list[dict[str, Any]]:
+    _ = (raw_text, vendor, device_type, command, params)
+    raise NotImplementedError("cisco nd6_cache parser not implemented yet")
diff --git a/netx_api/biz_state/parsers/common/__init__.py b/netx_api/biz_state/parsers/common/__init__.py
index 7da73de..d1f36f6 100644
--- a/netx_api/biz_state/parsers/common/__init__.py
+++ b/netx_api/biz_state/parsers/common/__init__.py
@@ -1 +1,4 @@
-"""Cross-vendor / shared parsers."""
+"""Cross-vendor shared parsers (LLDP, VRF discover / route summary, …).
+
+Vendor-specific show/display commands live under ``parsers/<vendor>/``.
+"""
diff --git a/netx_api/biz_state/parsers/ericsson/__init__.py b/netx_api/biz_state/parsers/ericsson/__init__.py
new file mode 100644
index 0000000..5adf7c2
--- /dev/null
+++ b/netx_api/biz_state/parsers/ericsson/__init__.py
@@ -0,0 +1,16 @@
+"""Ericsson IPOS parsers (skeleton).
+
+LLDP profile exists; TextFSM may still be stub — see topology_lldp.STUB_PARSER_KEYS.
+
+Add one module per show command, then register in ``PARSERS``.
+"""
+
+from __future__ import annotations
+
+from typing import Any, Callable
+
+NormalizeFn = Callable[..., list[dict[str, Any]]]
+
+PARSERS: dict[str, NormalizeFn] = {}
+
+__all__ = ["PARSERS"]
diff --git a/netx_api/biz_state/parsers/h3c/__init__.py b/netx_api/biz_state/parsers/h3c/__init__.py
new file mode 100644
index 0000000..cd6de8b
--- /dev/null
+++ b/netx_api/biz_state/parsers/h3c/__init__.py
@@ -0,0 +1,17 @@
+"""H3C / HP Comware parsers.
+
+LLDP already works via ``common.lldp_neighbors``
+(``display lldp neighbor-information list``).
+
+Add one module per display command, then register in ``PARSERS``.
+"""
+
+from __future__ import annotations
+
+from typing import Any, Callable
+
+NormalizeFn = Callable[..., list[dict[str, Any]]]
+
+PARSERS: dict[str, NormalizeFn] = {}
+
+__all__ = ["PARSERS"]
diff --git a/netx_api/biz_state/parsers/huawei/__init__.py b/netx_api/biz_state/parsers/huawei/__init__.py
new file mode 100644
index 0000000..f9028c7
--- /dev/null
+++ b/netx_api/biz_state/parsers/huawei/__init__.py
@@ -0,0 +1,21 @@
+"""Huawei VRP parsers.
+
+LLDP already works via ``common.lldp_neighbors`` (``display lldp neighbor``).
+
+Stub modules (not registered until implemented)::
+
+    interface_brief.py  arp.py  isis_adjacency.py  nd6_cache.py  bgp_peer.py
+
+When ready, import and add to ``PARSERS``.
+"""
+
+from __future__ import annotations
+
+from typing import Any, Callable
+
+NormalizeFn = Callable[..., list[dict[str, Any]]]
+
+# Do not register stubs yet — they raise NotImplementedError.
+PARSERS: dict[str, NormalizeFn] = {}
+
+__all__ = ["PARSERS"]
diff --git a/netx_api/biz_state/parsers/huawei/arp.py b/netx_api/biz_state/parsers/huawei/arp.py
new file mode 100644
index 0000000..cf28553
--- /dev/null
+++ b/netx_api/biz_state/parsers/huawei/arp.py
@@ -0,0 +1,17 @@
+"""Huawei: display arp all / display arp — TODO implement."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def normalize_arp(
+    *,
+    raw_text: str,
+    vendor: str = "",
+    device_type: str = "",
+    command: str = "",
+    params: dict[str, str] | None = None,
+) -> list[dict[str, Any]]:
+    _ = (raw_text, vendor, device_type, command, params)
+    raise NotImplementedError("huawei arp parser not implemented yet")
diff --git a/netx_api/biz_state/parsers/huawei/bgp_peer.py b/netx_api/biz_state/parsers/huawei/bgp_peer.py
new file mode 100644
index 0000000..27082e7
--- /dev/null
+++ b/netx_api/biz_state/parsers/huawei/bgp_peer.py
@@ -0,0 +1,17 @@
+"""Huawei: display bgp peer / display bgp vpnv4 all peer — TODO implement."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def normalize_bgp_peer(
+    *,
+    raw_text: str,
+    vendor: str = "",
+    device_type: str = "",
+    command: str = "",
+    params: dict[str, str] | None = None,
+) -> list[dict[str, Any]]:
+    _ = (raw_text, vendor, device_type, command, params)
+    raise NotImplementedError("huawei bgp_peer parser not implemented yet")
diff --git a/netx_api/biz_state/parsers/huawei/interface_brief.py b/netx_api/biz_state/parsers/huawei/interface_brief.py
new file mode 100644
index 0000000..930fcea
--- /dev/null
+++ b/netx_api/biz_state/parsers/huawei/interface_brief.py
@@ -0,0 +1,17 @@
+"""Huawei: display interface brief — TODO implement."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def normalize_interface_brief(
+    *,
+    raw_text: str,
+    vendor: str = "",
+    device_type: str = "",
+    command: str = "",
+    params: dict[str, str] | None = None,
+) -> list[dict[str, Any]]:
+    _ = (raw_text, vendor, device_type, command, params)
+    raise NotImplementedError("huawei interface_brief parser not implemented yet")
diff --git a/netx_api/biz_state/parsers/huawei/isis_adjacency.py b/netx_api/biz_state/parsers/huawei/isis_adjacency.py
new file mode 100644
index 0000000..4035caa
--- /dev/null
+++ b/netx_api/biz_state/parsers/huawei/isis_adjacency.py
@@ -0,0 +1,17 @@
+"""Huawei: display isis peer / display isis interface — TODO implement."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def normalize_isis_adjacency(
+    *,
+    raw_text: str,
+    vendor: str = "",
+    device_type: str = "",
+    command: str = "",
+    params: dict[str, str] | None = None,
+) -> list[dict[str, Any]]:
+    _ = (raw_text, vendor, device_type, command, params)
+    raise NotImplementedError("huawei isis_adjacency parser not implemented yet")
diff --git a/netx_api/biz_state/parsers/huawei/nd6_cache.py b/netx_api/biz_state/parsers/huawei/nd6_cache.py
new file mode 100644
index 0000000..9ecc7ec
--- /dev/null
+++ b/netx_api/biz_state/parsers/huawei/nd6_cache.py
@@ -0,0 +1,17 @@
+"""Huawei: display ipv6 neighbors — TODO implement."""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def normalize_nd6_cache(
+    *,
+    raw_text: str,
+    vendor: str = "",
+    device_type: str = "",
+    command: str = "",
+    params: dict[str, str] | None = None,
+) -> list[dict[str, Any]]:
+    _ = (raw_text, vendor, device_type, command, params)
+    raise NotImplementedError("huawei nd6_cache parser not implemented yet")
diff --git a/netx_api/biz_state/parsers/juniper/__init__.py b/netx_api/biz_state/parsers/juniper/__init__.py
new file mode 100644
index 0000000..806c69a
--- /dev/null
+++ b/netx_api/biz_state/parsers/juniper/__init__.py
@@ -0,0 +1,16 @@
+"""Juniper Junos parsers.
+
+LLDP already works via ``common.lldp_neighbors`` (``show lldp neighbors``).
+
+Add one module per show command, then register in ``PARSERS``.
+"""
+
+from __future__ import annotations
+
+from typing import Any, Callable
+
+NormalizeFn = Callable[..., list[dict[str, Any]]]
+
+PARSERS: dict[str, NormalizeFn] = {}
+
+__all__ = ["PARSERS"]
diff --git a/netx_api/biz_state/parsers/nokia/__init__.py b/netx_api/biz_state/parsers/nokia/__init__.py
new file mode 100644
index 0000000..a0079ab
--- /dev/null
+++ b/netx_api/biz_state/parsers/nokia/__init__.py
@@ -0,0 +1,17 @@
+"""Nokia / Alcatel (SROS / AOS) parsers.
+
+LLDP already works via ``common.lldp_neighbors``
+(``show system lldp neighbor`` / AOS ``show lldp remote-system``).
+
+Add one module per show command, then register in ``PARSERS``.
+"""
+
+from __future__ import annotations
+
+from typing import Any, Callable
+
+NormalizeFn = Callable[..., list[dict[str, Any]]]
+
+PARSERS: dict[str, NormalizeFn] = {}
+
+__all__ = ["PARSERS"]
diff --git a/netx_api/biz_state/parsers/zte/__init__.py b/netx_api/biz_state/parsers/zte/__init__.py
index 59d75b9..10f00da 100644
--- a/netx_api/biz_state/parsers/zte/__init__.py
+++ b/netx_api/biz_state/parsers/zte/__init__.py
@@ -1,4 +1,8 @@
-"""ZTE ZXROS status parsers — one module per show command."""
+"""ZTE ZXROS status parsers — one module per show command.
+
+LLDP uses ``common.lldp_neighbors`` (``show lldp neighbor brief``).
+Status tables below are ZTE-specific implementations.
+"""
 
 from __future__ import annotations