osi model pdu

takes 0 and a positive integer)2.2 Root port of the non-root switch is elected.1. Select a small cost (the larger the bandwidth, the smaller the overhead), the closer the root switch is.2. Neighbor Bridge ID is small.3. Port ID (port number) (upstream ports) Select a small2.3 Designated Port of the electoral segment0. This network segment refers to the data link segment, such as the connection between switch B and C is the network segment.1. Select a small cost (the larger the bandwidth, the sm

the receiving side must send back the acknowledgement, and if the packet is lost, it must be resent.Network layer:Responsible for communication between neighboring computers. Its functions include three aspects.First, processing packets from the transport layer to send the request, after receiving the request, will be grouped into the IP datagram, populate the header, select the path to the host, and then send the datagram to the appropriate network interface.Second, the processing of input dat