The effective maintenance algorithm for logical ring plays an important role in keeping the network real -time. The complexity of algorithm is the main barrier of implementing the token bus LAN.
逻辑环维护算法的效率是影响网络实时性的重要因素，也是令牌总线局域网络投入实用的主要难点。
2
The maintenance algorithm must be invoked, if the logical ring of the token bus LAN is broken.
在令牌总线局域网络中，当逻辑环被破坏时，就要运行逻辑环维护算法。
3
However, it could be some other LAN technology such as TokenRing or FDDI.