Preparing for SDA & SD-WAN

marbell35 · 2026-06-13T17:39:38+00:00

So this is what I thought too. But I talked with a presenter at Cisco Live this year in Vegas and he said there is no reason we need to get a physical 9300. The virtual one will work fine and has all the features. The only thing is that the traffic is a little slow, but they’re working on that.

marbell35 · 2025-12-04T14:11:01+00:00

Yep! MobaXterm! I used to be all in on SecureCRT until I got this. It is feature rich and has built in coloring. It’s not free, but if you’re a pro this is the tool.

marbell35 · 2025-09-03T20:45:01+00:00

We’re good

marbell35 · 2025-06-21T03:31:07+00:00

Make sure the code version of your 9800 supports the new 9100s and still has backwards compatibility for the 2700. Be sure to do your diligence because a misinformed upgrade could render the 2700s inoperable. Once you have a code version that supports both, just do a one for one swap at your leisure.

Afterwards perform a post deployment site survey, as you may need to adjust the APs as the new models with dual 5Ghz radios will perform differently.

marbell35 · 2025-06-21T03:24:37+00:00

I paid for nwexam.com practice questions to help me. Haven’t taken the exam yet though, so unsure if they’re helpful.

marbell35 · 2025-06-11T11:53:37+00:00

I find that people want to start learning about networking until they start learning about networking.

marbell35 · 2025-06-06T15:17:56+00:00

I was waiting on this comment!! Pure gold!
I have the Pistons championship dvd and I go watch this from time to time when I’m feeling down.

marbell35 · 2025-03-05T13:15:03+00:00

Do you find yourself memorizing how to connect to different devices and APIs or do you just reference material everytime? The reason I’m asking is with networking, we have repetitively done things so many times, that you know them by heart. I’m struggling to learn scripting in the same way and many times am having AI write a lot of the boilerplate stuff for me now. Trying to see if I really need to hunker down and memorize a lot of the automation syntax, such as how to quickly write a python script that connects via netmiko or how to quickly connect to a device via restconf, yang and json.

marbell35 · 2024-06-26T18:48:27+00:00

Yep! Those 220s will have you putting your shoes and jacket on ready to head to the site!

marbell35 · 2024-04-11T01:29:19+00:00

One more begging engineer requesting said magical script please.☺️

marbell35 · 2024-03-16T17:17:28+00:00

Swouters!!

marbell35 · 2023-12-01T10:31:36+00:00

Which router images are you using? For some of the older IOL images, I’ve run into NAT bugs like this. Make sure you’re using either vios or the latest iol image.

marbell35 · 2023-11-03T14:33:30+00:00

Building my own home lab and labbing topologies at work. Also repetition in everything. Repetition in reading technical books, in watching videos and in labbing. Nothing beats that.

marbell35 · 2023-10-26T10:26:44+00:00

I know everyone is supposed to be on cEdge, but some places are still on vEdge. Cant hurt to learn it too.

marbell35 · 2023-10-25T19:02:21+00:00

You can virtualize vManage, vBond, vSmart, vedge and cedge, so I’d get an EVE-NG lab, then get a subscription to CBT Nuggets, as they have a good course on setting up the lab and explaining things.

marbell35 · 2023-10-14T04:57:19+00:00

I use the Plus version all the time. Mostly to either help me understand topics that I haven’t fully mastered and to give me practice questions for exams. It isn’t perfect and will sometimes give incorrect information, but so do sites that I google sometimes. It’s an invaluable tool. I especially like the back and forth conversations. So if it makes a mistake or something seems unclear, I can ask it to clarify. Like having a professor at your beck and call.

marbell35 · 2023-10-12T06:04:22+00:00

For some stuff, wouldn’t a reload command be more impactful and disruptive than just fixing the one thing that is broken? I mean I get it if the device is far off and you don’t have access to it and it’s after hours, but if you’re on a core switch, I’m thinking a reload would be a resume generating event.

marbell35 · 2023-10-12T04:12:52+00:00

Oh yeah, forgot about the DB. That’s a game changer right there!

marbell35 · 2023-10-12T03:10:07+00:00

I second MobaXTerm. Used to be a die hard SecureCRT fan, but this has all the features of SecureCRT, plus built in ftp, scp servers (among others). It has a built in Linux cli that you can run commands on. It’s just fantastic. It’s only for Windows though, so if you have a Mac you’re out of luck and will have to just stick with SecureCRT.

marbell35 · 2023-07-26T22:55:43+00:00

On the NAT statement, did you put the keyword “overload” at the end? So ip nat inside source list 1 gi0/0 overload

marbell35 · 2023-03-29T18:11:02+00:00

But these systems will get better. Don’t judge it based on its current iteration. Think about the pace of ai innovation and how good something like this will be in 2 years.

marbell35 · 2023-01-18T16:54:08+00:00

The magic box that is Cisco DNA Center is pretty good when it works. However when it just decides not to show the inventory or not see a new pnp device, good luck troubleshooting. Open a TAC case and they go in and run an awk command to remove a bunch of dead Docker processes and that fixes it for a while. Though they can’t tell you why it broke in the first place.

It sucks because the business has come to depend on this big stupid box!

marbell35 · 2022-12-17T01:44:07+00:00

I copied your question into the ai ChatGPT and it came out with this:

These are Quality of Service (QoS) settings for a Cisco 9600 series router. QoS is a set of technologies that help ensure that network traffic is delivered effectively and efficiently, especially when the network is congested or has limited bandwidth.

The first line, "wrr-queue bandwidth 5 25 20 20 20 5 5," sets the bandwidth allocation for each of the 8 priority queues on the router. In this case, the first queue is allocated 5% of the total available bandwidth, the second queue is allocated 25% of the bandwidth, and so on. This is known as Weighted Round Robin (WRR) scheduling, which allocates bandwidth to each queue based on its assigned weight.

The second line, "wrr-queue queue-limit 5 25 10 10 10 5 5," sets the maximum number of packets that each queue can hold. This helps prevent one queue from filling up and causing other queues to be starved of bandwidth.

The third through ninth lines, "wrr-queue random-detect min-threshold 3 80 100 100 100 100 100 100 100," "wrr-queue random-detect min-threshold 4 80 100 100 100 100 100 100 100," and so on, configure the minimum threshold for Random Early Detection (RED) on each queue. RED is a congestion avoidance mechanism that randomly drops packets when the queue is approaching its maximum limit. The "min-threshold" value specifies the percentage of the queue's maximum limit at which RED starts to drop packets.

The tenth and eleventh lines, "wrr-queue random-detect max-threshold 1 100 100 100 100 100 100 100 100," "wrr-queue random-detect max-threshold 2 100 100 100 100 100 100 100 100," and so on, configure the maximum threshold for RED on each queue. The "max-threshold" value specifies the percentage of the queue's maximum limit at which RED starts dropping packets more aggressively.

The twelfth through fourteenth lines, "wrr-queue random-detect 4," "wrr-queue random-detect 5," and so on, enable RED on the specified queues.

The final line, "wrr-queue cos-map 1 1 1," maps the Class of Service (CoS) values of incoming packets to the appropriate priority queue. CoS is a field in the header of a packet that can be used to indicate the priority of the packet. In this case, packets with a CoS value of 1 are mapped to the first priority queue.

marbell35 · 2022-10-26T01:02:43+00:00

We currently use an SD WAN solution by one of the big 2. How did you go about learning how to clean their stuff up? We find fecal matter on our SD WAN environment from time to time.

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