Cisco Technology, Inc.

Srilatha Tangirala

Balaji Sundararajan

Ajeet Pal Singh Gill

Nithin Bangalore Raju

Vivek Agarwal

Ravi Kiran Chintallapudi

Prabahar Radhakrishnan

Ganesh Devendrachar

Sheikh Qumruzzaman

Rahul Hardikar

Pradeepan Kannawadi

Ananya Raval

Samir D Thoria

Pritam Baruah

Satyajit Das

Xiaohu Wang

Ramakumara Kariyappa

Venkatesh Nataraj

Satish Varadarajula

Sasi Veera

Kartik Katti

Ambika Basappa Chandrappa

Techniques for automatically integrating SD-WAN constructs to security policies are described. The techniques may include defining, by a security cloud provider, a security policy for an entity, the entity represented by a VPN security policy label and the security policy absent source and destination CIDR IP addresses. The security cloud provider notifies an SD-WAN controller of the security policy. The SD-WAN controller maps the VPN security policy label to an IP address pool and a VPN ID. The SD-WAN controller generates an enhanced security policy by automatically adding source and destination CIDR IP addresses to the security policy. The SD-WAN controller deploys the enhanced security policy to an SD-WAN branch router and generates a VPN segment between the SD-WAN branch router and the security cloud provider to establish a common secure internet gateway tunnel for the IP address pool.

Integrating SD-WAN constructs with SASE security policies

In one embodiment, a method includes onboarding, by an edge router, a first tenant from a network management system and determining, by the edge router, a mapping of a tenant identifier associated with the first tenant to a controller identifier associated with a controller. The method also includes reserving, by the edge router, a port number in a kernel for the first tenant and inserting, by the edge router, the tenant identifier into a first control packet. The method further includes communicating, by the edge router, the first control packet to the controller via an encrypted control connection during a first peering session. The first peering session shares the encrypted control connection with a second peering session.

Systems and methods for sharing a control connection

Disclosed are systems, apparatuses, methods, computer readable medium, and circuits for managing encryption keys in a multi-tenant network edge device. According to at least one example, a method includes: receiving tenant resource information at the multi-tenant network edge device; generating at least one parent encryption key; generating a plurality of child encryption keys; creating a routing connection to a network controller for each tenant in the plurality of tenants; transmitting the at least one parent encryption key and the plurality of child encryption keys to the network controller for distribution to the plurality of tenants; receiving a plurality of advertisements of transport locators from the network controller, wherein each advertisement includes a parent encryption key or a child encryption key; selecting a set of encryption keys from the plurality of advertisements; and forming a secure tunnel.

Managing encryption keys of secure tunnels in multi-tenant edge devices

Techniques for utilizing a network gateway provisioned in a software-defined network to verify service readiness of one or more security service(s) of a service chain prior to redirecting network traffic along a given data-path to the security service(s). The gateway may be configured to open a specific port on a network device hosting a security service to transmit network policies and/or test network traffic to the security service. The network gateway may host a virtual source and/or a virtual destination and cause the virtual source to send test network traffic through the security service via the port and to the virtual destination. The gateway may then utilize the received test network traffic to determine whether a given security service satisfies a threshold health and/or functionality measurement. Once it is determined that the security service satisfies the thresholds, the gateway may cause network traffic to be redirected to the security service.

Tracking data-path readiness of security services inserted in middle mile and cloud gateways

Techniques for virtualizing tenant transport interfaces configured to implement pertenant network routing attribute differentiation in each tenant overlay of a multisite wide area network (WAN) and share the virtual transport interfaces between multi-tenant edge (MTE) devices providing transport services to tenant devices based on a defined tenant tier model. A Software-Defined Networking (SDN) controller may receive a physical transport interface and/or a device type associated with a tenant device. The SDN controller may determine a virtual transport interface for the tenant device based on a tier associated with the tenant. MTE device(s) may utilize the physical transport interface to establish sessions with other MTE device(s) in the WAN. The virtual transport interface may be utilized by MTE devices to implement and/or enforce network routing attributes when forwarding network traffic associated with the tenant via the sessions established between the MTE devices through the WAN.

Sharing transport interfaces between tenants on multi-tenant edge devices

A method for allocating resources of a virtual controller is disclosed. The method comprises: allocating resources of a virtual controller to a first tenant, wherein the first tenant is allocated a first tenant quantity of guaranteed resources of the virtual controller and a second tenant is allocated a second tenant quantity of guaranteed resources of the virtual controller; determining that resources requested by the first tenant are greater than the first tenant quantity of guaranteed resources; determining that the virtual controller has unutilized resources sufficient to at least partially provide additional resources beyond the first tenant quantity of guaranteed resources to the first tenant; and temporarily provisioning the additional resources to the first tenant, wherein the additional resources are greater than the first tenant quantity of guaranteed resources.

Tenant fairness in a multi-tenant environment

Route exchange in a plurality of network controller appliances on a per-tenant basis is disclosed. In one aspect, a method includes receiving, from a network management system and at a first network controller appliance, a designation of at least two tenants to be hosted on the first network controller appliance, the first network controller appliance being one of a plurality of network controller appliances in a SD-WAN; sending, from the first network controller appliance to other network controller appliances of the plurality of network controller appliances, a tenant list query message to obtain a corresponding tenant list of each of the other network controller appliances; and receiving a corresponding response from each of the other network controller appliances indicating the corresponding tenant list of each of the other network controller appliances, the corresponding response being used to update the tenant list on the first network controller appliance.

Route exchange in multi-tenant clustered controllers

According to certain embodiments, a method by a network device includes receiving a handshake message for a traffic flow from a Software-Defined Wide-Area Network (SDWAN) and determining, from a traffic policy, whether the traffic flow should be symmetrical. In response to determining from the traffic policy that the traffic flow should be symmetrical, the method further includes performing a flow lookup on the traffic flow to determine if the network device originated the traffic flow. In response to determining that the network device did not originate the traffic flow, the method further includes determining a second network device that originated the traffic flow and sending the handshake message for the traffic flow to the second network device in order to maintain symmetry for the traffic flow.

Systems and methods for handling asymmetric SDWAN traffic flows

Techniques for automatically providing per tenant weighted DCMP over shared transport interfaces and automated flow has load balancing are described. The techniques may include onboarding the tenant to the local multi-tenant edge device associated with a tenant, where the resource profile defines a traffic allowance per transport interface for the tenant. Local weight per transport interface is applied. Information including local weight per transport interface is transmitted to a remote device via an SD-WAN controller. Information including a remote weight per transport interface of the remote device is received via the SD-WAN controller. Traffic is routed from the tenant based on local weight per transport interface of the local device and remote weight per transport interface of the remote device.

Weighted ECPM over shared transport interfaces and per flow hash load balancing per tenant in a multi-tenant environment

Techniques for virtualizing tenant transport interfaces configured to implement per-tenant network routing attribute differentiation in each tenant overlay of a multisite wide area network (WAN) and share the virtual transport interfaces between multi-tenant edge (MTE) devices providing transport services to tenant devices based on a defined tenant tier model. A Software-Defined Networking (SDN) controller may receive a physical transport interface and/or a device type associated with a tenant device. The SDN controller may determine a virtual transport interface for the tenant device based on a tier associated with the tenant. MTE device(s) may utilize the physical transport interface to establish sessions with other MTE device(s) in the WAN. The virtual transport interface may be utilized by MTE devices to implement and/or enforce network routing attributes when forwarding network traffic associated with the tenant via the sessions established between the MTE devices through the WAN.

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San Jose, CA, United States of America

Srilatha Tangirala