Configuring Ethernet Switches (Applicable to IP Connections)

Ethernet Planning

Figure 8-3 shows the Ethernet planning in and between the two DCs in the active-active DC solution.

Figure 8-3 Ethernet planning

For details, see "Spine-Leaf Interconnection Through Multi-level M-LAGs" in the Best Practices of CloudEngine 16800, 12800, 8800, and 6800 Series Switches for DCN Storage Scenarios.

To obtain the Best Practices of CloudEngine 16800, 12800, 8800, and 6800 Series Switches for DCN Storage Scenarios, log in to http://support.huawei.com/enterprise/. If you do not have an account, apply for one on the website. Then search for the document by document name.

Configuration Requirements

• Cross-DC L2 interconnection by core switches
  • When the distance between the DCs is 80 km or greater, DWDM devices are used for interconnection.
  • When the distance between the DCs is within 80 km, single-mode optical fibers are used for interconnection. Single-mode optical modules must be configured on the core switches for long-distance transmission. Multiple pairs of single-mode optical fibers must be configured. Each service link is carried by a pair of single-mode optical fibers.

    Ensure that the switches that you use support the single-mode optical modules and the maximum transmission distance supported by the optical modules is greater than the actual distance between the switches.