The path and reservation states, moreover, must also be periodically refreshed, thereby increasing the number of "overhead" messages that are forwarded through the network.
Lamandla nekucina kwemahhoko emanethi kumele kuhlolwe nako njengoba kukuphepha kwemahhoko landandako, kantsi futsi lokuhambisako kundanda emkhatsini wemahhoko naseceleni kwemadamu kumele kuhlolwe njalonjalo.