diff --git a/gso/utils/workflow_steps.py b/gso/utils/workflow_steps.py
index 9e3a35090f44776936483c445c03a64091530608..fb166950d5cf821390b34dd04b0264deb3a54acb 100644
--- a/gso/utils/workflow_steps.py
+++ b/gso/utils/workflow_steps.py
@@ -12,9 +12,12 @@ from pydantic_forms.core import FormPage
 from pydantic_forms.types import FormGenerator
 from pydantic_forms.validators import Label
 
+from gso.products.product_blocks.router import RouterRole
 from gso.products.product_types.iptrunk import Iptrunk
 from gso.services.lso_client import LSOState
 from gso.settings import load_oss_params
+from gso.utils.helpers import generate_inventory_for_active_routers
+from gso.utils.shared_enums import Vendor
 
 
 def _deploy_base_config(
@@ -38,6 +41,164 @@ def _deploy_base_config(
     }
 
 
+def _update_sdp_mesh(
+    subscription: dict[str, Any],
+    tt_number: str,
+    process_id: UUIDstr,
+    *,
+    dry_run: bool,
+) -> LSOState:
+    inventory = generate_inventory_for_active_routers(
+        router_role=RouterRole.PE, router_vendor=Vendor.NOKIA, exclude_routers=[subscription["router"]["router_fqdn"]]
+    )
+
+    extra_vars = {
+        "dry_run": dry_run,
+        "subscription": subscription,
+        "commit_comment": f"GSO_PROCESS_ID: {process_id} - TT_NUMBER: {tt_number} - "
+        f"Update the SDP mesh for L2circuits(epipes) config on PE NOKIA routers",
+        "verb": "update_sdp_mesh",
+        "pe_router_list": {
+            subscription["router"]["router_fqdn"]: {
+                "lo4": str(subscription["router"]["router_lo_ipv4_address"]),
+                "lo6": str(subscription["router"]["router_lo_ipv6_address"]),
+            }
+        },
+    }
+
+    return {
+        "playbook_name": "update_pe_sdp_mesh.yaml",
+        "inventory": inventory,
+        "extra_vars": extra_vars,
+    }
+
+
+def _update_sdp_single_pe(
+    subscription: dict[str, Any],
+    tt_number: str,
+    process_id: UUIDstr,
+    *,
+    dry_run: bool,
+) -> LSOState:
+    extra_vars = {
+        "dry_run": dry_run,
+        "subscription": subscription,
+        "commit_comment": f"GSO_PROCESS_ID: {process_id} - TT_NUMBER: {tt_number} - "
+        f"Update the SDP mesh for L2circuits(epipes) config on PE NOKIA routers",
+        "verb": "update_sdp_mesh",
+        "pe_router_list": generate_inventory_for_active_routers(
+            router_role=RouterRole.PE,
+            router_vendor=Vendor.NOKIA,
+            exclude_routers=[subscription["router"]["router_fqdn"]],
+        )["all"]["hosts"],
+    }
+
+    return {
+        "playbook_name": "update_pe_sdp_mesh.yaml",
+        "inventory": {"all": {"hosts": {subscription["router"]["router_fqdn"]: None}}},
+        "extra_vars": extra_vars,
+    }
+
+
+def _add_pe_mesh_to_pe(
+    subscription: dict[str, Any],
+    tt_number: str,
+    process_id: UUIDstr,
+    *,
+    dry_run: bool,
+) -> LSOState:
+    extra_vars = {
+        "dry_run": dry_run,
+        "subscription": subscription,
+        "commit_comment": f"GSO_PROCESS_ID: {process_id} - TT_NUMBER: {tt_number} - "
+        f"Add list of PE routers into iGEANT/iGEANT6 groups of the PE router",
+        "verb": "add_pe_mesh_to_pe",
+        "pe_router_list": generate_inventory_for_active_routers(
+            router_role=RouterRole.PE, exclude_routers=[subscription["router"]["router_fqdn"]]
+        )["all"]["hosts"],
+    }
+
+    return {
+        "playbook_name": "update_ibgp_mesh.yaml",
+        "inventory": {"all": {"hosts": {subscription["router"]["router_fqdn"]: None}}},
+        "extra_vars": extra_vars,
+    }
+
+
+def _add_pe_to_pe_mesh(
+    subscription: dict[str, Any],
+    tt_number: str,
+    process_id: UUIDstr,
+    *,
+    dry_run: bool,
+) -> LSOState:
+    inventory = generate_inventory_for_active_routers(
+        router_role=RouterRole.PE, exclude_routers=[subscription["router"]["router_fqdn"]]
+    )
+    extra_vars = {
+        "dry_run": dry_run,
+        "subscription": subscription,
+        "commit_comment": f"GSO_PROCESS_ID: {process_id} - TT_NUMBER: {tt_number} - "
+        f"Add the PE router to all PE routers in iGEANT/iGEANT6.",
+        "verb": "add_pe_to_pe_mesh",
+    }
+
+    return {
+        "playbook_name": "update_ibgp_mesh.yaml",
+        "inventory": inventory,
+        "extra_vars": extra_vars,
+    }
+
+
+def _add_all_p_to_pe(
+    subscription: dict[str, Any],
+    tt_number: str,
+    process_id: UUIDstr,
+    *,
+    dry_run: bool,
+) -> LSOState:
+    extra_vars = {
+        "dry_run": dry_run,
+        "subscription": subscription,
+        "commit_comment": f"GSO_PROCESS_ID: {process_id} - TT_NUMBER: {tt_number} - Add all P-routers to this new PE",
+        "verb": "add_all_p_to_pe",
+        "p_router_list": generate_inventory_for_active_routers(
+            router_role=RouterRole.P, exclude_routers=[subscription["router"]["router_fqdn"]]
+        )["all"]["hosts"],
+    }
+
+    return {
+        "playbook_name": "update_ibgp_mesh.yaml",
+        "inventory": {"all": {"hosts": {subscription["router"]["router_fqdn"]: None}}},
+        "extra_vars": extra_vars,
+    }
+
+
+def _add_pe_to_all_p(
+    subscription: dict[str, Any],
+    tt_number: str,
+    process_id: UUIDstr,
+    *,
+    dry_run: bool,
+) -> LSOState:
+    inventory = generate_inventory_for_active_routers(
+        router_role=RouterRole.P, exclude_routers=[subscription["router"]["router_fqdn"]]
+    )
+    extra_vars = {
+        "dry_run": dry_run,
+        "subscription": subscription,
+        "commit_comment": f"GSO_PROCESS_ID: {process_id} - TT_NUMBER: {tt_number} - "
+        f"Add promoted router to all PE routers in iGEANT/iGEANT6",
+        "verb": "add_pe_to_all_p",
+    }
+
+    return {
+        "playbook_name": "update_ibgp_mesh.yaml",
+        "inventory": inventory,
+        "extra_vars": extra_vars,
+    }
+
+
 @step("[DRY RUN] Deploy base config")
 def deploy_base_config_dry(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
     """Perform a dry run of provisioning base config on a router."""
@@ -50,6 +211,78 @@ def deploy_base_config_real(subscription: dict[str, Any], tt_number: str, proces
     return _deploy_base_config(subscription, tt_number, process_id, dry_run=False)
 
 
+@step("[DRY RUN] Add the PE to all P routers")
+def add_pe_to_all_p_dry(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a dry run of adding the PE router to all P routers."""
+    return _add_pe_to_all_p(subscription, tt_number, process_id, dry_run=True)
+
+
+@step("[FOR REAL] Add the PE to all P routers")
+def add_pe_to_all_p_real(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a real run of adding the PE router to all P routers."""
+    return _add_pe_to_all_p(subscription, tt_number, process_id, dry_run=False)
+
+
+@step("[DRY RUN] Add all P routers to the PE")
+def add_all_p_to_pe_dry(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a dry run of adding all P routers to the PE router."""
+    return _add_all_p_to_pe(subscription, tt_number, process_id, dry_run=True)
+
+
+@step("[FOR REAL] Add all P routers to the PE")
+def add_all_p_to_pe_real(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a real run of adding all P routers to the PE router."""
+    return _add_all_p_to_pe(subscription, tt_number, process_id, dry_run=False)
+
+
+@step("[DRY RUN] Add the PE to PE mesh")
+def add_pe_to_pe_mesh_dry(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a dry run of adding the PE router to all PE routers in iGEANT/iGEANT6."""
+    return _add_pe_to_pe_mesh(subscription, tt_number, process_id, dry_run=True)
+
+
+@step("[FOR REAL] Add the PE to PE mesh")
+def add_pe_to_pe_mesh_real(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a real run of adding the PE router to all PE routers in iGEANT/iGEANT6."""
+    return _add_pe_to_pe_mesh(subscription, tt_number, process_id, dry_run=False)
+
+
+@step("[DRY RUN] Add PE mesh to the PE")
+def add_pe_mesh_to_pe_dry(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a dry run of adding list of PE routers into iGEANT/iGEANT6 of the router."""
+    return _add_pe_mesh_to_pe(subscription, tt_number, process_id, dry_run=True)
+
+
+@step("[FOR REAL] Add PE mesh to the PE")
+def add_pe_mesh_to_pe_real(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a real run of adding list of PE routers into iGEANT/iGEANT6 of the router."""
+    return _add_pe_mesh_to_pe(subscription, tt_number, process_id, dry_run=False)
+
+
+@step("[DRY RUN] Include the PE into SDP mesh on other Nokia PEs")
+def update_sdp_mesh_dry(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a dry run of including new PE router in SDP mesh on other NOKIA PE routers."""
+    return _update_sdp_mesh(subscription, tt_number, process_id, dry_run=True)
+
+
+@step("[FOR REAL] Include the PE into SDP mesh on other Nokia PEs")
+def update_sdp_mesh_real(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a real run of including new PE router in SDP mesh on other NOKIA PE routers."""
+    return _update_sdp_mesh(subscription, tt_number, process_id, dry_run=False)
+
+
+@step("[DRY RUN] Configure SDP on the PE to all other Nokia PEs")
+def update_sdp_single_pe_dry(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Perform a dry run of configuring SDP on a new PE router to all other NOKIA PE routers."""
+    return _update_sdp_single_pe(subscription, tt_number, process_id, dry_run=True)
+
+
+@step("[FOR REAL] Configure SDP on the PE to all other Nokia PEs")
+def update_sdp_single_pe_real(subscription: dict[str, Any], tt_number: str, process_id: UUIDstr) -> State:
+    """Configure SDP on a new PE router to all other NOKIA PE routers."""
+    return _update_sdp_single_pe(subscription, tt_number, process_id, dry_run=False)
+
+
 @step("[FOR REAL] Set ISIS metric to very high value")
 def set_isis_to_max(subscription: Iptrunk, process_id: UUIDstr, tt_number: str) -> LSOState:
     """Workflow step for setting the :term:`ISIS` metric to an arbitrarily high value to drain a link."""
@@ -91,6 +324,38 @@ def run_checks_after_base_config(subscription: dict[str, Any]) -> LSOState:
     }
 
 
+@step("Check iBGP session")
+def check_pe_ibgp(subscription: dict[str, Any]) -> LSOState:
+    """Check the iBGP session."""
+    extra_vars = {
+        "dry_run": False,
+        "subscription": subscription,
+        "verb": "check_pe_ibgp",
+    }
+
+    return {
+        "playbook_name": "check_ibgp.yaml",
+        "inventory": {"all": {"hosts": {subscription["router"]["router_fqdn"]: None}}},
+        "extra_vars": extra_vars,
+    }
+
+
+@step("Check L3 services")
+def check_l3_services(subscription: dict[str, Any]) -> LSOState:
+    """Check L3 services."""
+    extra_vars = {
+        "dry_run": False,
+        "subscription": subscription,
+        "verb": "check_base_ris",
+    }
+
+    return {
+        "playbook_name": "check_l3_services.yaml",
+        "inventory": {"all": {"hosts": {subscription["router"]["router_fqdn"]: None}}},
+        "extra_vars": extra_vars,
+    }
+
+
 @inputstep("Prompt for new SharePoint checklist", assignee=Assignee.SYSTEM)
 def prompt_sharepoint_checklist_url(checklist_url: str) -> FormGenerator:
     """Prompt the operator with the checklist in SharePoint for approving a new subscription."""