It USES holddown timers to prevent routing loops - default is 180 seconds.
它使用限制计时器避免路由回圈-预设为180秒。
2
Suddenly, he stopped and holddown his arms. This happy young man didn't wear underlinen!
突然,国王停住了,垂下了双手,这个幸福的人没有穿衬衣!
3
In Figure, the holddown timer is set to 180 seconds. Therefore, an update to a route that was down and is now up could stay in the holddown state until the full 180 seconds have passed.