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Weighted Round Robin ( WRR, Weighted Round Robin) scheduling: each priority queue is allocated a certain
bandwidth, and provides services for each priority queue according to the priority from high to low. When the high-
priority queue has used up all the allocated bandwidth, it is automatically switched to the next priority queue to serve it.
Queue Shaping
When the packet sending rate is higher than the receiving rate, or the interface rate of the downstream device is lower than
the interface rate of the upstream device, network congestion may occur. If the size of the service traffic sent by users is not
limited , the continuous burst of service data from a large number of users will make the network more congested. In order to
make the limited network resources serve users more effectively, it is necessary to restrict the service flow of users.
Rate Limit
Interface rate limit can limit the total rate of all packets sent or received on an interface . The interface rate limit also uses the
token bucket to control the flow. If an interface rate limit is configured on an interface of the device, all packets sent through
this interface must first be processed through the token bucket of the interface rate limiter . If there are enough tokens in the
token bucket , the packet can be sent; otherwise, the packet will be discarded or cached.
Queue Scheduling
Queue Shaping
Rate Limit
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