In theHuawei SD-WAN solution, LAN-side devices (such as CPEs and aggregation routers) usevarious routing protocolsto connect to Layer 3 networks and exchange routes dynamically. The supported protocols include:
✅A. IS-IS (Intermediate System to Intermediate System)
Alink-state protocoloften used in large enterprise networks forfast convergenceandscalability.
✅B. OSPF (Open Shortest Path First)
Awidely used dynamic routing protocolfor intra-domain (LAN) connectivity.
Commonly used in enterprise networkstoconnect SD-WAN edge routers to LAN networks.
✅C. BGP (Border Gateway Protocol)
BGP is primarily used forWAN and internet connectivity, but it can also be usedinside large enterprise networksfor LAN-side routing.
BGP enables inter-domain routing and policy-based route control.
✅D. RIP (Routing Information Protocol)
A legacy distance-vector protocolstill supported in some networks for basic LAN routing.
Less preferred due toslow convergence and hop-count limitations.
Reference from Huawei HCIE-Datacom Documentation:
Huawei SD-WAN Deployment Guide – LAN-Side Routing Protocols
HCIE-Datacom Training Material – Routing Configuration in SD-WAN
