VMware NSX-T does not support VXLAN!
a VM is connected to a segment.
require VLAN transport zones. A single Edge Uplink segment can be used more than once.
#QA In the SGR in Go-To in Two-arm design, how does IP routing on the firewall scale when we have dozens of (Provider, Consumer) pairs? #QA How cumbersome is the management of the static IP routes related to the SGR on the service device? #QA Is BD2 the IP default gateway for EPG Web endpoints? #QA Which component takes the role of IP default gateway of the firewall: BD1 or FW-Out BD?
A bridge domain can be configured with an IP subnet; it is then called a layer-3 bridge domain. The BD subnet is aka ACI internal subnet.
The IP address that we configure under the bridge domain is the IP default gateway of the IP subnet. The IP address is configured using a CIDR notation.
Subnets configured under bridge domains are added to the leaf’s routing table as static routes.
cisco.com/go/support –> Switches –> Nexus 9000 –> Troubleshooting Guides –> (select NX-OS release) –> “Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release …” –> Troubleshooting Installations, Upgrades and Reboots –> Chapter Contents –> Troubleshooting Software System Reboots –> Recovery from the loader> Prompt.
Loader> dir
<you see for example nxos.9.3.13.bin NX-OS file in the bootflash>
Loader> boot nxos.9.3.13.bin
The system should boot the image. When you get the normal prompt, make sure to set the bootvariable to that NX-OS image:
replaces reverse Telnet feature that was typically configured on terminal services routers.
provides secure console access for servers physically connected to a terminal services router.
introduces the concept of ‘rotary’.
Remember that each physical Async port has an associated logical line to it.
Each router line (not the Async ports) must be configured with a unique rotary number.
Number of rotaries == number of lines
A VPN is a network where private network services are provided to one or more customers over a public network, Internet, or a private network.
A VPN consists of one or more VPN tunnels!
VPN connects sites of a same customer together. A set of “policies” determine which sites communicate with each other and which not;
In one scenario, the customer itself defines and implements them, in collaboration with the SP. The customer may for example want to force traffic from site S1 to traverse site S2, because the latter has a firewall installation.
While performing routine configuration on a Cisco router, I encountered a funny typo. Try to find it by yourself.
Hint: it’s in the last line.
There’s an info on the Internet that says it’s possible to pass Vmware VCA certs for free. It’s been a while now and Vmware retired this offer.
However, there are some folks that say they could get around and pass without spending a penny. They say it’s a matter of combining promo codes.
I’ve been trying all the codes. Pearson Vue warned me that they’re going to shut down my account if I do another attempt.
In this tutorial we’ll learn :
Pushing the IOS image
On the LMS home page, click on the Resource Manager Essentials link.
Click on Software Distribution
Choose a distribution method. By default, I use “by device”. That’s the simplest one
Check the device for which you want to upgrade the IOS and click Next
Today I successfully passed the exam. I got a score of 420. Alhamdulillah.
How I studied for the exam: I watched the Vmware E-learning fundamental videos, took notes, reviewed them with a big mind map, then registered and sat for it. I sat studying in many small sessions.
It’s great to sit for an exam and pass it from home :) it’s also great to see there are other folks out there who are sharing the same experience.