SRR？
正确答案:
SRR has two mode：share mode and shaped mode.
SRR in shared more： each output queue has a weight value assigned， and is serviced in proportion to the assigned weight when interface is under congestion. The bandwidth is guaranteed to this level but not limit to it.
SRR in shaped mode： egress queue is guaranteed percentage of bandwidth and rate-limited to that amount. Shaped mode can’t use more than the allocated bandwidth even if the link is idle. In shaped mode ， absolute weight is used to caculate the egress queue’s available bandwidth.
SRR in shared more： each output queue has a weight value assigned， and is serviced in proportion to the assigned weight when interface is under congestion. The bandwidth is guaranteed to this level but not limit to it.
SRR in shaped mode： egress queue is guaranteed percentage of bandwidth and rate-limited to that amount. Shaped mode can’t use more than the allocated bandwidth even if the link is idle. In shaped mode ， absolute weight is used to caculate the egress queue’s available bandwidth.
答案解析:有
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