Sandy Bridge

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Sandy Bridge is CPU architecture provided by Intel for mainstream 2-socket servers and adopts the 32 nm process. Huawei RH2288H V2 and RH1288 V2 servers support Sandy Bridge CPUs.

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Ivy Bridge
Ivy Bridge (IVB) is the third-generation Core i series CPU launched by Intel in 2012. Compared with Sandy Bridge, Ivy Bridge uses 22 nm and 3D transistor technologies to improve the transistor density greatly and performance of core graphics cards by over one fold. Huawei RH2288H V2 and RH1288 V2 servers support Ivy Bridge CPUs.

Functions of a virtual bridge
The concept of a virtual bridge (VB) was innovatively put forward by Huawei. The switching domain of an Ethernet board that has Layer 2 switching capabilities can be divided into multiple sub-switching domains. If no services are interconnected, different VBs cannot gain access to each other. Each VB has an independent configuration mode and uses an independent VLAN. Different VBs can use the same VLAN.

Reason for STP root bridge change on S series switch
An S series switch (except S1700 switches) with the smallest bridge ID (BID) is elected as the root bridge. A BID consists of a 16-bit bridge priority and a bridge MAC address. If bridge priority is not specified manually, the switch with the smallest MAC address will become the root bridge. After topology calculation is complete, if the root bridge receives packets carrying a smaller BID than its own BID, the root bridge is no long the root bridge and the topology of the entire network must be recalculated. If this occurs, run the stp root primary command to assign the lowest priority to a switch so that this switch becomes the root bridge.

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