Fable Busting Half 5: Eliminating the tedium and guesswork of community troubleshooting


When you’re nonetheless utilizing CLIs, Syslogs, and SNMP to observe and handle your community, there’s an excellent likelihood troubleshooting continues to be a thorn in your aspect.

But it surely doesn’t should be.

Fashionable switches have all of the telemetry knowledge wanted to speed up drawback identification and determination. However the knowledge needs to be pulled collectively and introduced in methods which might be useful and actionable.

Most community monitoring instruments can flip uncooked knowledge into enticing graphs and condensed statistics. Many present customizable alarms that increase a flag when sure thresholds are exceeded. And a few supply restricted packet path tracing capabilities (usually a expensive add-on that requires tedious configuration).

And but, these options and capabilities aren’t sufficient. Accelerating community orchestration and troubleshooting requires extra visibility. Extra context and correlation. And extra steerage.

NetOps groups must see all packet flows – hop by hop – at line price. They want clever root trigger analyses that not solely pinpoint anomalies and issues, however present the total scope of affect. They want prescriptive suggestions for the right way to resolve these points. They usually want the flexibility to automate the community’s response ought to the issues reappear, serving to set up a self-healing community that requires much less troubleshooting over time.

These are the superior capabilities community operators can solely get with Cisco Nexus Dashboard Insights, the community monitoring, evaluation, and automation engine of Cisco Nexus Dashboard. Listed below are solutions to a number of the questions we’ve been fielding about this new software, adopted by a few widespread situations and the way Nexus Dashboard Insights can assist:

Q: How can I get a quick, consolidated view of my community connections and assets?

A: Straightforward. Nexus Dashboard Insights doesn’t simply show leaves and spines, but additionally service adjustments, service paths, ports, load balancing, firewalls, VMs, endpoints, CPUs, reminiscence, and extra.


Q: Can I set up new connections or change present connections?

A: Sure, in fact. With Nexus Dashboard Insights, you’ll be able to simply set up guidelines that dictate endpoint-to-endpoint communications. These guidelines may even outline which protocols the endpoints are approved to make use of (permitting communication between two endpoints over safe HTTP, for instance, whereas blocking ICMP). That is extraordinarily vital for firms in regulated industries which have particular compliance necessities. Nexus Dashboard Insights additionally supplies a pre-change evaluation operate that lets you simulate and validate the impacts of every change and establish potential issues earlier than these adjustments are made.


Q: Can I see how packets are shifting from level A to level B?

A: Yep! Along with exhibiting all packet flows at line price, Nexus Dashboard Insights supplies a Connectivity Evaluation software that helps validate the trail between two endpoints within the community material. That is enabled by the circulate telemetry embedded in Nexus 9000 Sequence {hardware} (so it by no means impacts the CPU). Nexus Dashboard Insights normalizes and correlates circulate data to offer the end-to-end path and latency of every packet, exhibiting precisely the place drops occurred and the context wanted to grasp why.


Q: The place can I get some further recommendation and steerage?

A: Nexus Dashboard Insights helps there too. It has built-in advisories based mostly on Cisco greatest practices. It presents prescriptive suggestions when issues are recognized. And with an easy-to-use pure language question engine, you will get quick solutions to questions like, “What endpoints are related to every leaf?” with out sifting by onerous topology documentation.


Q: How do these capabilities enhance NetOps?

A: We’ve seen the advantages firsthand. Utilizing Nexus Dashboard Insights, Cisco IT has minimize the time spent going back-and-forth between monitoring instruments by 50 %, lowered correlation efforts by 40 to 50 %, and accelerated imply time to detect (MTTD) by 30 %. Learn the total case research to be taught extra.


Let’s check out a few real-world situations and the way they’re simplified and accelerated with Nexus Dashboard Insights.

Situation 1: Excessively excessive ingress utilization

Let’s say one in all your switches is nearing its ingress capability limits. Nexus Dashboard Insights not solely flags the issue, but additionally exhibits the flows, VMs, and IP addresses which might be doubtlessly being impacted. It then supplies suggestions for the right way to resolve the problem – together with utilizing increased bandwidth hyperlinks or rerouting site visitors to a unique change – earlier than packet drops happen or congestion begins to hinder software efficiency.

Situation 2: BGP down anomaly

Maybe you’re experiencing anomalies along with your BGP. Nexus Dashboard Insights will establish precisely which interface went down (and why) and the routes being impacted. As well as, it’s going to present a number of suggestions for resolving the problem.

Scouring logs to troubleshoot community issues is like trying to find a needle in a haystack, slowing down a prime NetOps precedence – Imply time to innocence. Whereas different community monitoring instruments pressure you to piece collectively a fancy puzzle utilizing disparate items of information and guesswork, Nexus Dashboard Insights supplies the visibility, context, correlation, and steerage wanted to speed up community operations and troubleshooting.

To see it in motion, check out Cisco Nexus Dashboard.




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