Cisco Technology, Inc.

Pu Duan

Changhong Shen

Yu Zhang

Xiaorong Wang

Hongbo Xia

Yin Wang

FeiXiang Zhao

Chunxu Zhou

Techniques and architecture are described for reusing QoS policy instances for groups of software defined wide area network (SDWAN)-based transport locators (TLOCs) sharing the same attributes. For example, the attributes may include subscriber transport bandwidth (e.g., a transport bandwidth based on a user profile), QoS policy template profile information, transport locator color, etc. All of this information may be shared across the SDWAN fabric and may be available in the overlay management protocol (OMP) TLOC database.

Policy instance reuse in control planes of networks

According to some embodiments, a method performed by a software defined wide area network (SD-WAN) controller in a SD-WAN network comprising a plurality of aggregation edge routers and a plurality of branch edge routers comprises the following steps. The method comprises: receiving, from each of the plurality of branch edge routers, a transmit location (TLOC) publication comprising a quality of service (QoS) attribute of one or more TLOCs configured on the branch edge router; determining a QoS policy based on the received TLOC publications; transmitting the QoS policy to the plurality of aggregation edge routers; receiving, from a branch edge router of the plurality of branch edge routers, a first congestion indication indicating that bandwidth utilization on a wide area network (WAN) interface of the branch edge router exceeds a first threshold; determining an updated QoS policy based on the received TLOC publications and the first congestion indication to reduce congestion at the branch edge router; and transmitting the updated QoS policy to the plurality of aggregation edge routers.

Congestion avoidance with adaptive QoS policy enforcement from SD-WAN controller in SD-WAN networks

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Shanghai, China

Pu Duan