(Cisco switches not only have layer 2 switching function, but also have VLAN and other functions. VLAN technology enables us to easily control the size of broadcast domain. With VLAN, the cascade link between switches needs trunk technology to ensure that the link can transmit data of multiple VLANs at the same time. At the same time, in order to facilitate the management of VLAN information on each switch, VTP has also been introduced. If the cascade link bandwidth between switches is insufficient, we can bundle multiple links to form logical links. This chapter will introduce the specific configurations of the above technologies one by one.)
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