VMware 3V0-41.22 - Advanced Deploy VMware NSX-T Data Center 3.x

To enable logging for the production NSX-T environment, you need to follow these steps:

Verify via putty with SSH that the administrator can connect to all NSX-Transport Nodes. You can use the credentials identified in Putty (admin) to log in to each transport node. For example, you can use the following command to connect to the sfo01w01en01 edge transport node:ssh admin@sfo01w01en01. You should see a welcome message and a prompt to enter commands.

Verify that there is no current active logging enabled by reviewing that directory is empty -/var/log/syslog-. You can use thelscommand to list the files in the /var/log/syslog directory. For example, you can use the following command to check the sfo01w01en01 edge transport node:ls /var/log/syslog. You should see an empty output if there is no active logging enabled.

Enable NSX Manager Cluster logging. You can use thesearch_web("NSX Manager Cluster logging configuration")tool to find some information on how to configure remote logging for NSX Manager Cluster. One of the results isNSX-T Syslog Configuration Revisited - vDives, which provides the following steps:

Navigate to System > Fabric > Profiles > Node Profiles then select All NSX Nodes then under Syslog Servers click +ADD

Enter the IP or FQDN of the syslog server, the Port and Protocol and the desired Log Level then click ADD

Select multiple configuration choices that could be appropriate success criteria. You can use thesearch_web("NSX-T logging success criteria")tool to find some information on how to verify and troubleshoot logging for NSX-T. Some of the possible success criteria are:

The syslog server receives log messages from all NSX nodes

The log messages contain relevant information such as timestamp, hostname, facility, severity, message ID, and message content

The log messages are formatted and filtered according to the configured settings

The log messages are encrypted and authenticated if using secure protocols such as TLS or LI-TLS

Enable NSX Edge Node logging. You can use thesearch_web("NSX Edge Node logging configuration")tool to find some information on how to configure remote logging for NSX Edge Node. One of the results isConfigure Remote Logging - VMware Docs, which provides the following steps:

Run the following command to configure a log server and the types of messages to send to the log server. Multiple facilities or message IDs can be specified as a comma delimited list, without spaces.

set logging-server proto level [facility ] [messageid ] [serverca ] [clientca ] [certificate ] [key ] [structured-data ]

Validate logs are generated on each selected appliance by reviewing the "/var/log/syslog”. You can use thecatortailcommands to view the contents of the /var/log/syslog file on each appliance. For example, you can use the following command to view the last 10 lines of the sfo01w01en01 edge transport node:tail -n 10 /var/log/syslog. You should see log messages similar to this:

2023-04-06T12:34:56+00:00 sfo01w01en01 user.info nsx-edge[1234]: 2023-04-06T12:34:56Z nsx-edge[1234]: INFO: [nsx@6876 comp="nsx-edge" subcomp="nsx-edge" level="INFO" security="False"] Message from nsx-edge

You have successfully enabled logging for the production NSX-T environment.

To configure traffic replication to the monitoring software for your Tampa web overlay segments with bi-directional traffic, you need to follow these steps:

Log in to the NSX Manager UI with admin credentials. The default URL is https:// .

Navigate to Networking > Segments and select the Tampa web overlay segment that you want to replicate the traffic from. For example, select Web-01 segment that you created in Task 2.

Click Port Mirroring > Set > Add Session and enter a name and an optional description for the port mirroring session. For example, enter Tampa-Web-Monitoring.

In the Direction section, select Bi-directional as the direction from the drop-down menu. This will replicate both ingress and egress traffic from the source to the destination.

In the Source section, click Set and select the VMs or logical ports that you want to use as the source of the traffic. For example, select Web-VM-01 and Web-VM-02 as the source VMs. Click Apply.

In the Destination section, click Set and select Remote L3 SPAN as the destination type from the drop-down menu. This will allow you to replicate the traffic to a remote destination outside of the NSX-T environment.

Enter the IP address of the destination device where you have installed the network monitoring software, such as 10.10.10.200.

Select an existing service profile from the drop-down menu or create a new one by clicking New Service Profile. A service profile defines the encapsulation type and other parameters for the replicated traffic.

Optionally, you can configure advanced settings such as TCP/IP stack, snap length, etc., for the port mirroring session.

Click Save and then Close to create the port mirroring session.

You have successfully configured traffic replication to the monitoring software for your Tampa web overlay segments with bi-directional traffic using NSX-T Manager UI.

To troubleshoot the bridge configuration and restore access to the application, you need to follow these steps:

Log in to the NSX Manager UI with admin credentials. The default URL is https:// .

Navigate to Networking > Segments and select the overlay segment that is bridged to the VLAN-backed port group. For example, select Web-01 segment that you created in Task 2.

Click Bridge > Set and verify the configuration details of the bridge. Check for any discrepancies or errors in the parameters such as bridge name, bridge ID, VLAN ID, edge node, etc.

If you find any configuration errors, click Edit and modify the parameters accordingly. Click Save to apply the changes.

If you do not find any configuration errors, check the connectivity and firewall rules between the overlay segment and the VLAN-backed port group. You can use ping or traceroute commands from the NSX Edge CLI or the vSphere Web Client to test the connectivity. You can also use show service bridge command to check the status of the bridge service on the NSX Edge.

If you find any connectivity or firewall issues, resolve them by adjusting the network settings or firewall rules on the NSX Edge or the vSphere Distributed Switch.

After resolving the issues, verify that the bridge is functioning and the Bridge-VM is responding to ICMP requests from the main console.You can also check the MAC addresses learned by the bridge on both sides of the network using show service bridge mac command on the NSX Edge CLI.