其中很多错误路径最终都表现为用例的备用路径。
Many of these error pathways show up as alternate paths in the use cases.
EIGRP追踪这个资讯，以便路由器EIGRP可以鉴定迅速地识别并切换到备用路径。
EIGRP tracks this information so that EIGRP routers can identify and switch to alternate routes quickly.
当一个 DB2 Connect 网关不可用时，Balance 可以成功地通过备用路径进行路由连接。
In the event one DB2 Connect gateway was unavailable, Balance would successfully route connections through the alternate.
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