I already mentioned the netsim-tools Easter Egg, here are the other cool features shipping in release 1.2.1:
To upgrade netsim-tools, use pip3 install --upgrade netsim-tools
; if you’re starting from scratch, read the installation instructions.
I already mentioned the netsim-tools Easter Egg, here are the other cool features shipping in release 1.2.1:
In this series of blog posts I'm going to break down how to configure Aruba AOS-CX switches for VXLAN and EVPN, plus explain how to read the EVPN table and various 'show' commands.
In this first post I will look at VXLAN, its configuration and operation.
VXLAN: encapsulation type of 8 bytes, works at the data plane, concerned with the forwarding of packets.
Ethernet VPN (EVPN): Extension to BGP, works that the control plane, concerned with learning and advertising MAC/IP addresses.
VXLAN configuration is one of the basic building blocks of a EVPN-VXLAN network, it is worth familiarising yourself with static VXLAN configuration, even if you are never going to use it.
Figure 1 below shows a network comprised of three Aruba 6300 switches acting as VTEPs, with two customer VLANs, VLAN10 and VLAN 20, that are bound with VNI 1010 and VNI 1020 respectively across the VXLAN network.
Component parts of the configuration:
Asking for help can be difficult. It can be hard to admit that we need assistance, and sometimes pride gets in the way of our better judgment. We may worry that asking for help will make us seem weak or incompetent. However, this could not be further from the truth. Asking for help is actually a sign of strength. It shows that we are willing to admit when we need assistance and that we are not afraid to ask for support.
There can be many reasons why it is hard to ask for help. We may worry that we will seem weak or incompetent. We may also feel like we need to be able to handle everything on our own. However, it is important to remember that asking for help is not a sign of weakness. It takes a lot of strength and courage to reach out for assistance, and there are many people who are willing to support us through whatever challenge we may be facing.
There is nothing wrong with asking for help. In fact, it Continue reading
“Our new Constitution is now established, and has an appearance that promises permanency; but in this world nothing can be said to be certain, except death and taxes.”
— Benjamin Franklin, in a letter to Jean-Baptiste Le Roy, 1789
The famous expression highlighting that only “death and taxes” seem certain in life (something that goes back to the beginning of civilization and to Ancient Egypt) is on people’s minds during the month of April in the United States. This past Monday, April 18, 2022, was Tax Day. So, were US citizens procrastinators, leaving their federal (and state) tax returns to the last day? Traffic to tax-related official federal and state websites seems to show it: there was a spike of more than 470% on April 18.
Just for reference, we can see on Cloudflare Radar that Internet traffic in the US, from our perspective, wasn’t significantly impacted on Monday, April 18, although there was a clear peak, higher than in the previous 14 days, that night at 22:00 EST (that’s 02:00 UTC on April 19). So, traffic (that includes DNS and HTTP requests from our standpoint) was 18% higher compared to the same time on the previous Continue reading
This lesson continues the SMS alerting example from lesson 4.3. Course files are in a GitHub repository: https://github.com/ericchou1/pp_practical_lessons_1_route_alerts Eric Chou is a network engineer with 20 years of experience, including managing networks at Amazon AWS and Microsoft Azure. He’s the founder of Network Automation Nerds and has written the books Mastering Python Networking and Distributed […]
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