CategoryNetwork Insight

Archiving Network Flows from vRealize Network Insight to Log Insight

vRealize Network Insight (vRNI) captures all traffic going through the network. It stores the traffic in flow records, and these are made up out of a source, destination, protocol, and port number. The metrics are attached so you can get a nice graph of the traffic behavior.

vRNI Flows and context

After creating the flow, vRNI goes on and attaches a lot of context to that flow: Is it coming from a VM? Is there a firewall rule attached? Which vCenter is this flow going through? What kind of SD-WAN Policies are attached? If any of this context changes (i.e., a VM got renamed), … Read more

Configuration Backups of vRealize Network Insight

Similar to my last post, I found another small gem in the vRealize Network Insight 5.3 release: the ability to backup all configuration within the Platform.

Unsupported

Before you continue reading, please note that this is an unsupported feature right in 5.3. It’ll be officially supported later this year. Having said that…These new API endpoints in the API Explorer caught my eye:

Snapshots

Currently, the supported method of creating backups of Network Insight is to power down the VM, take a snapshot, backup that snapshot, and power the VM back up. Needless to say, that needs some work. I … Read more

Syncing Flows between vRealize Network Insight Collectors

There are a few reasons you’d want to have multiple Network Insight instances collecting data from the same data sources. Maybe one is a staging instance, and the other is a production instance. Perhaps you’re rebuilding Network Insight on another instance (and can’t move the existing one), but do want to have them running parallel for some time. I could go on.

One of the challenges is being able to collect network flows in both instances, as vSphere can only send flows to a single collector IP. You could solve this with a NetFlow duplicator, but now there’s another … Read more

vRealize Network Insight Cookbook Now Available!

I’m very excited to announce that the vRealize Network Insight Cookbook is now available! After one year of research and writing, 51.142 words, 280 pages, and 107 draft versions later, this has been the most rewarding challenge of my career, and I hope you like the result.

NOTE: Due to 2020 being 2020, all royalty proceeds will go to the Red Cross, NAACP, and ACLU. Learn about Network Insight, while also doing something good.

Expect a lot of technical information. The why, how, and what of Network Insight gets a turn, but it’s mostly a technical … Read more

IP Address Management with vRealize Network Insight

vRealize Network Insight knows all and see all that’s happening within a network. Due to the search engine and the ability to pull out any data on the infrastructure, new use cases pop up now and then. Lately, I’ve been approached by a few organizations that are using Network Insight as an IP Address Management (IPAM) system, or to complete their existing IPAM system and compare and contrast it to the live infrastructure.

Here are a few examples: checking whether which IP addresses are free in a particular IP range. Comparing the IPAM registrations to the IP addresses that are Read more

Adding 100 Switches to vRealize Network Insight in 20 minutes

Adding a bunch of data sources to vRealize Network Insight can be tedious, especially when the number of data sources goes into the 100s. This is one of the reasons why PowervRNI exists, and it’s been helping organizations to add their entire network infrastructure to Network Insight in 1 go.

There’s an example script in the PowervRNI GitHub repository called datasource-bulk-import.ps1, that allows you to add data sources of all types in bulk. To make getting started a little easier, I’ve recorded a video that focuses on adding 100 Cisco Nexus 5K switches to Network Insight in roughly 20 … Read more

Deploying vRealize Network Insight via Ovftool

vRealize Network Insight used to have OVA properties that you could use to configure its network settings and desired login credentials, but since version 3.8, they changed the setup procedure to include the setup utility. Meaning you would have to log in to the console and configure it that way.

If you’re deploying Network Insight once and then start using, this is not much of an issue. But, there are people (like me) that deploy on a regular basis. That’s where logging into the console each time becomes a hassle, as it takes longer and it is more steps than … Read more

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