切換電路的連接設(shè)置的結(jié)果是保留了從發(fā)送端到接收端的包所通過(guò)的線(xiàn)路帶寬。其它的特性這一就是所有的包都沿同一個(gè)線(xiàn)路意味著如果包傳輸超過(guò)了時(shí)序那它將不能到達(dá)接收端.由于沒(méi)有路徑用來(lái)進(jìn)行包交換，所以要想不同的包沿不同的路徑傳送就是能依靠網(wǎng)絡(luò)的條件了。這樣包即便是超過(guò)了時(shí)序它們也有可能到達(dá)的。
包交換技術(shù)比線(xiàn)路交換技術(shù)更能容錯(cuò)。事實(shí)上，這也是它被發(fā)明的理由！當(dāng)一個(gè)交換開(kāi)頭被拉下，則所有使用它的線(xiàn)路將被切斷并且其余的包將不能再被傳送。此時(shí)如果在進(jìn)行包交換，包將在已選擇的路徑上停止交換。
The result of the connection setup with circuit switching is the reservation of bandwidth all the way from the sender to the receiver. All packets follow this path. Among other properties, having all packets follow the same path means that they cannot arrive out of order. With packet switching there is no path , so different packets can follow different paths, depending on network conditions at the time they are sent. They may arrive out of order.
Packet switching is more fault tolerant than circuit switching. In fact, that is why it was invented. If a switch goes down, all of the circuits using it are terminated and no more traffic can be sent on any of them. With Packet switching, packets can be routed around dead switches.