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Huawei access devices support comprehensive E2E networking protection solutions, which protect access devices, the network side, and the access side by rapidly switching services to the standby link in the event of a fault on the active link. This ensures stable service running and improves access network reliability.
| Protected Object | Solution | Function | |
| Device hardware | Dual control boards Dual power boards Dual upstream transmission boards |
Supports rapid active/standby switching in the event of a hardware fault or system upgrade. Shares the load, doubling the total bandwidth. |
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| Network side | Ethernet uplinks or cascading links | Ethernet link aggregation | Shares the load and increases upstream bandwidth. Members in an aggregation group back up each other, improving uplink reliability. |
| Ethernet port protection group | Supports active/standby switching for uplink ports, improving uplink reliability. Can be used with Ethernet link aggregation. |
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| Smart link | Huawei proprietary protocol, which improves the protection switching performance of dual uplinks. | ||
| Ethernet uplink ring networks | Multiple Spanning Tree Protocol(MSTP) |
Is compatible with STP and RSTP and remedies STP and RSTP drawbacks. Supports rapid convergence. The duration is determined based on the number of nodes on the ring. Supports non-Huawei devices. |
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| ITU-T G.8032- compliant Ethernet ring protection switching (ERPS) | Supports rapid convergence, meeting the carrier-class switching requirement of 50 ms. Supports non-Huawei devices. |
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| STM-1uplinks | STM-1 port protection | Improves uplink reliability when STM-1 ports are connected to an SDH device to provide the TDM service. | |
| Access side | PON downlinks |
GPON type B protection | Protects OLT’s GPON ports and feeder fibers. Features lower cost and simpler implementation when compared with GPON type C protection. |
| GPON type C protection | Protects OLT’s GPON ports, feeder fibers,optical splitters, and distribution fibers. Provides higher reliability than GPON type B protection. |
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Application
E2E Networking Protection
| Downlink protection: | Device protection: | Ethernet uplink ring protection: |
| GPON Type B GPON Type C |
Dual control boards Dual power boards Dual upstream transmission boards |
MSTP ERPS (ITU-T G.8032) Ethernet uplink protection: Ethernet link aggregation Ethernet port protection group Smart link |
Multiple Ethernet Uplink Networking Protection Solutions
Highlights
- Dual Control Boards,Supporting Upgrades Without Interrupting Services
- ITU-T G.8032-compliant ERPS for Better Interoperability and Rapid Convergence,Meeting Ring Networking Protection Requirements
- Two Intra- or Inter-Board STM-1 Ports Can Constitute a Protection Group for the TDM Service, Providing Board- or Port-Level Protection
Both active and standby links transmit the same data, but only the data transmitted over the active link is received, implementing dual transmitting and selective receiving.
The switching duration is less than 50 ms.
Two STM-1 links must connect to one SDH device in the upstream direction.
Highlights
4. Ethernet Link Aggregation Working with Ethernet Port Protection Groups for Multiple Uplink Protection
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Ethernet link aggregation supports: |
| The aggregation of a maximum of eight links. 50-ms intra-board switching. 200-ms inter-board switching. |
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An Ethernet port protection group: |
| Supports inter-board protection. Can take effect in an aggregation group. Supports ports,aggregation groups, or boards as its members. |
Both Ethernet link aggregation and Ethernet port protection groups can work with ARP detection or bidirectional forwarding detection (BFD) to rapidly switch links,meeting the 50-ms carrier-class switching requirement.
5. GPON Type B and Type C Protection
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Protects any two PON ports on an OLT and ONUs do not need to register with the OLT again after link switching. |
| Supports automatic synchronization of configuration data on PON ports. | |
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Protects enterprise and base station private line services. |
| Simplifies networking and OLT/ONU management. | |
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Protects power systems as well as enterprise and base station private line services. |
| OLTs can be located in different places. | |
Board recommendation
- Control Boards Working in Load Sharing Mode
| Specification | SCUN | SCUH | MCUD | MCUD1 |
| Layer 2 packet forwarding capability | 1452 Mpps | 2856 Mpps | 380 Mpps | 380 Mpps |
| Switching capacity | 960 Gbit/s | 1920 Gbit/s | 256 Gbit/s | 256 Gbit/s |
| Maximum upstream traffic | 8 x GE | 8 x 10GE | 8 x GE | 4 x GE+2 x 10GE |
2. Ethernet Upstream Transmission Protection-supported Boards
| Feature | SCUN/SCUH /MCUD/MCUD1 | GIU | SPUC | SPUF | OPGE | ETHB |
| MSTP | Yes | Yes | Yes | Yes | Yes | Yes |
| ERPS | Yes | Yes | No | Yes | No | No |
| Intra-board aggregation | Yes | Yes | Yes | Yes | Yes | Yes |
| Inter-board aggregation | Yes | Yes | Yes | Yes | Yes | Yes |
| Intra-board protection group | Yes | Yes | Yes | No | Yes | Yes |
| Inter-board protection group | Yes | Yes | Yes | No | Yes | Yes |
3. GPON Downstream Transmission Protection-supported Boards
| Feature | GPFD | GPBH |
| GPON type B protection | Yes | Yes |
| GPON type C protection | Yes | Yes |