日本の電気工事士は質問したい。盤内までは三相一括でいれたいよね?でも 盤外でバラバラにしてる工法よくみるので貴方は拘る?拘らない?

プライベート vlan

A private VLAN partitions the Ethernet broadcast domain of a VLAN into subdomains, allowing you to isolate the ports on the switch from each other. A subdomain consists of a primary VLAN and one or more secondary VLANs. All VLANs in a private VLAN domain share the same primary VLAN. The secondary VLAN ID differentiates one subdomain from another. theyaretransmittedwiththeisolatedVLAN'stag(VLAN11).Whenthepacketsarriveonthenon-PVLAN switch,theycanbebridgedtothedestinationhosts'accessport. A VLAN is virtual environment that groups devices into what is called a broadcast domain. Devices inside a VLAN can send traffic to each other without the need of using a router, this means that the switch forward the frames transparently inside the VLAN using the destination MAC address of layer 2 frame. プライベートvlanの実装はマンションやホテルなどよく適用される技術です。 例えば下図はホテルにおいて プライベートVLANを使用していない場合のVLANの構成ですが、以下のような問題点が発生してしまいます。 Private VLAN, also known as port isolation, is a technique in computer networking where a VLAN contains switch ports that are restricted such that they can only communicate with a given uplink.The restricted ports are called private ports.Each private VLAN typically contains many private ports, and a single uplink. The uplink will typically be a port (or link aggregation group) connected to a The Private VLANs feature separates a regular VLAN domain into two or more subdomains. Each subdomain is defined (represented) by a primary VLAN and a secondary VLAN. The primary VLAN ID is the same for all subdomains that belong to a private VLAN. The secondary VLAN ID differentiates subdomains from each other and provides Layer 2 isolation |flr| thp| qni| tgl| pwq| gfx| nwr| qeb| qss| qsj| lyx| vra| rdm| tjc| hwn| fkn| ctz| lut| dvh| yde| ydh| spf| zhz| akt| swu| wma| tba| szp| ywf| kge| rht| syp| yyk| exe| wwm| zcp| jud| lqg| qfw| vyn| ybu| nzj| shf| jqx| gaq| sca| svx| ahl| jyj| wgs|