Abstract: Some embodiments provide a novel method for monitoring health of LFEs of a logical network. For an LFE implemented by multiple PFEs, a health analytics manager identifies a set of one or more metrics associated with each PFE implementing the LFE. The health analytics manager uses the set of metrics to compute a health score for the LFE. Then, the health analytics manager provides the health score in a report to provide an indication regarding the monitored health of the LFE. The set of metrics used to compute the health score for the LFE includes, in some embodiments, at least one metric for each PFE implementing the LFE.

Abstract: Some embodiments provide a novel method of assessing health of a software managed network (SMN) that includes multiple forwarding elements that exchange data messages with each other. A health analytics manager collects performance metrics from control-plane components of the SMN that configure the forwarding elements of the SMN to forward data messages. The health analytics manager also collects performance metrics from data-plane components including the forwarding elements of the SMN. Then, the health analytics manager generates one health score from the collected performance metrics of the control-plane and data-plane components to express an overall health of the SMN.

Abstract: Some embodiments provide a novel method for monitoring health of logical networks. For a logical network including multiple LFEs, a health analytics manager identifies a set of one or more metrics associated with each LFE in the logical network. The health analytics manager uses the set of metrics to compute a health score for the logical network. Then, the health analytics manager provides the health score in a report to provide an indication regarding the monitored health of the logical network. In some embodiments, at least one LFE is implemented by multiple PFEs, and the set of metrics includes metrics associated with each of the PFEs implementing the at least one LFE.

Abstract: The disclosure herein describes managing smart alarms based on an associated set of alarms and/or events. The alarms are detected in a computing system and the detected alarms are used to identify a smart alarm definition with which the detected alarms are associated. A condition of the identified smart alarm definition is evaluated, and it is determined that the condition is satisfied at least in part by the set of alarms. Smart alarm information is then provided using the smart alarm definition and the detected set of alarms. Providing smart alarm information associated with the detected set of alarms and/or events provides additional context to enable efficient interpretation of detected alarms in a computing system. Further, managing the smart alarms as described reduces the quantity of individual alarms that must be processed and reduces the likelihood of errors occurring as those alarms are processed.

Abstract: Some embodiments provide a method for providing dynamic host configuration protocol (DHCP) services to different data compute nodes (e.g., virtual machines) that belong to different logical networks (e.g., for different tenants in a datacenter). In some embodiments, the method inserts a logical network identifier (LNI) value to each DHCP packet and forwards the packet to a DHCP server module for processing the DHCP request. Based on the LNI value, the DHCP server of some embodiments identifies the logical network from which the DHCP packet is received. The DHCP server then provides the requested DHCP service (e.g., assigning an IP address to a data compute node that has originated the DHCP packet, assigning a domain name, etc.) according to a DHCP service configuration for the identified logical network.

Abstract: Some embodiments provide a novel method for monitoring health of an SMN that includes multiple networking components. A health analytics manager identifies a set of one or more metrics associated with the network components of the SMN. The health analytics manager uses the set of metrics to compute a first health score for the SMN. Then, the health analytics manager presents the first health score in a UI along with (1) data regarding how the first health score was computed, and (2) a set of one or more parameters for a user to modify how the health for the SMN is computed. After receiving from the user one or more modifications to at least one of the parameters, the health analytics manager computes a second health score for the SMN based on the modified set of parameters.

Abstract: A method for a hypervisor to implement flow-based local egress in a multisite datacenter is disclosed. The method comprises: determining whether a first data packet of a first data flow has been received. If the first data packet has been received, then the hypervisor determines a MAC address of a first local gateway in a first site of a multisite datacenter that communicated the first data packet, and stores the MAC address of the first local gateway and a 5-tuple for the first data flow. Upon determining that a response for the first data flow has been received, the hypervisor determines whether the response includes the MAC address of the first local gateway. If the response includes a MAC address of another local gateway, then the hypervisor replaces, in the response, the MAC address of another local gateway with the MAC address of the first local gateway.

Abstract: Some embodiments provide a method or tool for automatically configuring a logical router on one or more edge nodes of an edge cluster (e.g., in a hosting system such as a datacenter). The method of some embodiments configures the logical router on the edge nodes based on a configuration policy that dictates the selection method of the edge nodes. In some embodiments, an edge cluster includes several edge nodes (e.g., gateway machines), through which one or more logical networks connect to external networks (e.g., external logical and/or physical networks). In some embodiments, the configured logical router connects a logical network to an external network through the edge nodes.

Abstract: Some embodiments provide a method for configuring a set of logical routers in a logical network. The method receives a configuration of an advertised route for a first logical router and a set of allowable routes for a second logical router to which the first logical router connects. The method determines whether the set of allowable routes for the second logical router includes the advertised route as an allowed route from the first logical router. Only when the advertised route is an allowed route from the first logical router, the method adds the advertised route to a routing table for at least one component of the second logical router.

Abstract: A method for a hypervisor to implement flow-based local egress in a multisite datacenter is disclosed. The method comprises: determining whether a first data packet of a first data flow has been received. If the first data packet has been received, then the hypervisor determines a MAC address of a first local gateway in a first site of a multisite datacenter that communicated the first data packet, and stores the MAC address of the first local gateway and a 5-tuple for the first data flow. Upon determining that a response for the first data flow has been received, the hypervisor determines whether the response includes the MAC address of the first local gateway. If the response includes a MAC address of another local gateway, then the hypervisor replaces, in the response, the MAC address of another local gateway with the MAC address of the first local gateway.

Abstract: Some embodiments provide a method for providing dynamic host configuration protocol (DHCP) services to different data compute nodes (e.g., virtual machines) that belong to different logical networks (e.g., for different tenants in a datacenter). In some embodiments, the method inserts a logical network identifier (LNI) value to each DHCP packet and forwards the packet to a DHCP server module for processing the DHCP request. Based on the LNI value, the DHCP server of some embodiments identifies the logical network from which the DHCP packet is received. The DHCP server then provides the requested DHCP service (e.g., assigning an IP address to a data compute node that has originated the DHCP packet, assigning a domain name, etc.) according to a DHCP service configuration for the identified logical network.

Abstract: Techniques are disclosed herein for providing an agent for implementing layer 2 (L2) communication on a layer 3 (L3) underlay network. In one embodiment, an agent in virtualization software determines a newly available network address of a VM, configures a network interface of the L3 network to be associated with the network address such that network traffic for the network address is directed to the network interface, adds a route to a virtual router in the virtualization software indicating the VM is local, and adds a router to an address resolution table to associate the network address with a MAC address. This permits a packet sent from one VM to another VM to be processed by the virtual router based on routes therein and forwarded to the other VM either internally or using the L3 underlay network.

Abstract: Some embodiments provide a method or tool for automatically configuring a logical router on one or more edge nodes of an edge cluster (e.g., in a hosting system such as a datacenter). The method of some embodiments configures the logical router on the edge nodes based on a configuration policy that dictates the selection method of the edge nodes. In some embodiments, an edge cluster includes several edge nodes (e.g., gateway machines), through which one or more logical networks connect to external networks (e.g., external logical and/or physical networks). In some embodiments, the configured logical router connects a logical network to an external network through the edge nodes.

Abstract: A method for a hypervisor to implement flow-based local egress in a multisite datacenter is disclosed. The method comprises: determining whether a first data packet of a first data flow has been received. If the first data packet has been received, then the hypervisor determines a MAC address of a first local gateway in a first site of a multisite datacenter that communicated the first data packet, and stores the MAC address of the first local gateway and a 5-tuple for the first data flow. Upon determining that a response for the first data flow has been received, the hypervisor determines whether the response includes the MAC address of the first local gateway. If the response includes a MAC address of another local gateway, then the hypervisor replaces, in the response, the MAC address of another local gateway with the MAC address of the first local gateway.

Abstract: Some embodiments provide a method for providing dynamic host configuration protocol (DHCP) services to different data compute nodes (e.g., virtual machines) that belong to different logical networks (e.g., for different tenants in a datacenter). In some embodiments, the method inserts a logical network identifier (LNI) value to each DHCP packet and forwards the packet to a DHCP server module for processing the DHCP request. Based on the LNI value, the DHCP server of some embodiments identifies the logical network from which the DHCP packet is received. The DHCP server then provides the requested DHCP service (e.g., assigning an IP address to a data compute node that has originated the DHCP packet, assigning a domain name, etc.) according to a DHCP service configuration for the identified logical network.

Abstract: Some embodiments provide a method or tool for automatically configuring a logical router on one or more edge nodes of an edge cluster (e.g., in a hosting system such as a datacenter). The method of some embodiments configures the logical router on the edge nodes based on a configuration policy that dictates the selection method of the edge nodes. In some embodiments, an edge cluster includes several edge nodes (e.g., gateway machines), through which one or more logical networks connect to external networks (e.g., external logical and/or physical networks). In some embodiments, the configured logical router connects a logical network to an external network through the edge nodes.

Abstract: Some embodiments provide a method for configuring a set of logical routers in a logical network. The method receives a configuration of an advertised route for a first logical router and a set of allowable routes for a second logical router to which the first logical router connects. The method determines whether the set of allowable routes for the second logical router includes the advertised route as an allowed route from the first logical router. Only when the advertised route is an allowed route from the first logical router, the method adds the advertised route to a routing table for at least one component of the second logical router.

Abstract: Some embodiments provide a central firewall management system that can be used to manage different firewall devices from a single management interface. This management interface provides a uniform interface for defining different firewall rule sets and deploying these rules sets on different firewall devices (e.g., port-linked firewall engines, firewall service VMs, network-perimeter firewall devices, etc.). Also, this interface allows the location and/or behavior of the firewall rule sets to be dynamically modified. The management interface in some embodiments also provides controls for filtering and debugging firewall rules.

Abstract: Some embodiments provide a method for configuring a set of logical routers in a logical network. The method receives a configuration of an advertised route for a first logical router and a set of allowable routes for a second logical router to which the first logical router connects. The method determines whether the set of allowable routes for the second logical router includes the advertised route as an allowed route from the first logical router. Only when the advertised route is an allowed route from the first logical router, the method adds the advertised route to a routing table for at least one component of the second logical router.

Abstract: Some embodiments provide a method for providing metadata proxy services to different data compute nodes that are associated with different logical networks (e.g., for different tenants of a datacenter). When a data compute node (DCN) is instantiated (i.e., starts executing) in a host machine, the DCN requests for metadata associated with the DCN from a metadata server. The requested metadata includes identification and configuration data (e.g., name and description, amount of virtual memory, number of allocated virtual CPUs, etc.) for the DCN. Each DCN generates and sends out a metadata request packet after an IP address is assigned to the DCN (e.g., by a DHCP server). In some embodiments, a metadata proxy server (1) receives the metadata request packets that are sent by different DCNs associated with different logical networks, (2) adds logical network identification data to the packets, and (3) forwards the packets to a metadata server.