Typical Networking Without Routers
Huawei OptiX OSN equipment can construct a network where TDM services and packet services are transmitted between base stations and the RNC without assistance from routers.
NE1 and NE2 are generally OptiX OSN 1500 or OptiX OSN 500 or OptiX OSN 550 NEs; NE3, NE4, NE5, and NE6 are generally Huawei OptiX OSN 3500 or OptiX OSN 7500 or OptiX OSN 7500 II NEs; NE7 and NE8 are generally OptiX OSN 7500 or OptiX OSN 7500 II NEs.
FE services from NodeBs at the access layer are aggregated to the GE packet ring through NE1 and NE2, then to the 10GE packet rings through NE3 and NE6, and finally to the RNC.
Hybrid Networking with Routers
Hybrid MSTP equipment on a Layer 2 network can be connected to an RNC through routers, which provide powerful Layer 3 switching capabilities and enhance network scalability.
Service Bearing This solution supports TDM services and Ethernet/IP services.
· Ethernet and IP services are carried by an L2VPN on the Hybrid MSTP network, and are forwarded based on IP addresses or carried by an L3VPN on the CX network.
The Hybrid MSTP network transmits E-Line or E-LAN services to its interconnected CX equipment. The CX equipment terminates Layer 2 VLANs and transmits services to Layer 3.
Network Topologies The Hybrid MSTP equipment can be interconnected with routers to form a ring or chain network. There are various types of equipment applicable to each transmission layer.
Common network topologies are as follows:
MPLS tunnel/PW APS is configured between Hybrid MSTP access equipment and Hybrid MSTP convergence equipment. LAGs are configured on Hybrid MSTP convergence equipment and E-Trunks are configured on CX equipment to protect services on the links in between.
MPLS tunnel/PW APS groups that are co-sourced but not co-sinked are configured on the Hybrid MSTP equipment that is connected to base stations. Working and protection tunnels/PWs are separately terminated on two pieces of Hybrid MSTP equipment that is connected to CX equipment. E-LANs are configured on the Hybrid MSTP equipment connected to CX equipment and VRRP groups are configured on CX equipment to provide link-level and equipment-level protection. Convergence equipment is dual-homed to shed the risks that convergence and Layer 3 equipment faults bring about.
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