若1个B设备同时和多个B设备成对，B设备上行到ER的口子型链路规划和流

If a B device is paired with multiple B devices at the same time, the sub-link link planning and traffic load of the B device upstream to the ER will bring great imbalance, and bring greater business risks when the network fails. Therefore, in actual network planning, such scenarios should be strictly controlled, and at the same time, a B device can be paired with up to 2 other B devices. <br>(3) In a few cases, there will be multiple B devices connected in series and paired. The paired mode of B devices connected in series is shown in Figure 2-10.

If one B device is paired with multiple B devices at the same time, the port sub-link planning and traffic load of the B device will result in great imbalance and significant business risk in the event of a network failure. Therefore, in the actual network planning, such scenarios should be strictly controlled, while a B device with up to 2 other B devices in pairs of network.<br>(3) In a few cases, there will be multiple B-device sandination, B-device pairing is shown in Figure 2-10

If 1 B device is paired with multiple B devices at the same time, the port sub link planning and traffic load of B device uplink to ER will bring great imbalance, and bring greater business risk in case of network failure. Therefore, in the actual networking planning, this kind of scenario should be strictly controlled, and at the same time, one B device can be networked in pairs with two other B devices at most.<br>(3) In a few cases, there will be multiple B equipment in series and in pairs. The mode of B equipment in series and in pairs is shown in Figure 2-10<br>