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BGP Neighbors: This parameter is essential for establishing BGP sessions with other routers. Configuring BGP neighbors allows VRF Lite gateways to exchange routing information with adjacent BGP-enabled devices.

Local AS: The Local Autonomous System (AS) number can be set for the VRF Lite gateway, which is necessary for BGP operations within a specific routing domain.

The set auth-policy command in the NSX CLI is used to configure the authentication policy for local users. This command allows administrators to adjust settings related to password policies, lockout policies, and other authentication-related parameters for local user accounts on NSX Manager.

https://docs.vmware.com/en/VMware-NSX/4.1/administration/GUID-26C44DE8-1854-4B06-B6DA-A2FD426CDF44.html

To configure a firewall rule based on the domain name of a specific application, the administrator needs to use the Profile field in a distributed firewall rule. The Profile field allows the administrator to select a context profile that contains one or more attributes for filtering traffic. One of the attributes that can be used is Domain (FQDN) Name, which specifies the fully qualified domain name of the application. For example, if the administrator wants to filter traffic to *.office365.com, they can create a context profile with the Domain (FQDN) Name attribute set to *.office365.com and use it in the Profile field of the firewall rule.

References:

Filtering Specific Domains (FQDN/URLs)

FQDN Filtering

When using NSX Federation, Policy mode is the only supported mode in NSX Global Manager. This mode allows centralized management and consistent policy enforcement across multiple NSX environments, providing a unified approach to managing network and security policies in federated deployments.

When two virtual machines are connected on the same overlay segment, they are part of the same Layer 2 broadcast domain. In this case, the communication between the two VMs is happening within the same broadcast domain, which means that broadcast traffic can be sent to all devices on the segment. Since the ping is successful, the two VMs can communicate directly over Layer 2 without needing routing.

Syslog Server: NSX supports forwarding logs to a centralized syslog server, which is a standard tool for centralized logging in network environments.

VMware Aria Operations for Logs (formerly known as vRealize Log Insight): This tool provides centralized log management and analytics, specifically designed to integrate with VMware environments, including NSX, for enhanced log collection, analysis, and troubleshooting.

https://vdc-download.vmware.com/vmwb-repository/dcr-public/c3fd9cef-6b2b-4772-93be-3fe60ce064a1/1f67b9e1-b111-4de7-9ea1-39931d28f560/NSX-T%20Command-Line%20Interface%20Reference.html#get%20logical-switch%20%3Clogical-switch-id%3E

Area ID: Both routers must belong to the same OSPF area for a neighbor relationship to form.

MTU of the Uplink: Mismatched MTU settings can prevent the OSPF adjacency from forming, as OSPF packets may be dropped if they exceed the MTU size.

Subnet mask: Both routers must have the same subnet mask on the interface where OSPF is configured to establish a neighbor relationship.

An error with code 1001 during the configuration of a time-based firewall rule often indicates a time synchronization issue. Restarting the NTP service on the ESXi host can resolve this issue by ensuring that the host’s time is synchronized correctly, which is essential for time-based rules to function accurately.