BGP PIC Edge provides sub second convergence time in the case of edge link or node failure. BGP PIC is a useful for MPLS VPN service and can be provided by the Service provider as a value added service thus might provide additional revenue.
BFD is not a fast convergence mechanism. BFD stands for Bidirectional Forwarding Detection. It is an important tool for the IP layer but there is a confusion in the network community about it.
After publishing the Disaster Recovery Faking, Take Two blog post (you might want to read that one before proceeding) I was severely reprimanded by several people with ties to virtualization vendors for blaming virtualization consultants when it was obvious the firewall clusters stretched across two data centers caused the total data center meltdown.
Let’s chase that elephant out of the room first. When you drive too fast on an icy road and crash into a tree who do you blame?
For whatever reason some people love to blame the tires ;)
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Roopa Prabhu and Roopa’s hype man Pete Lumbis join Kernel of Truth host Brian O’Sullivan to discuss why open networking is not just whitebox, it’s so much more. Between the general advantages of this kind of architecture to the benefits of being backed by the Linux kernel and Linux community— open networking is a great option to have not just now but going forward. Learn how this open development community works together to the advantage of everyone, not just networking, and with companies of all sizes, including hyper-scale ones, improving things like the sanitation of code and so much more. As a special bonus you’ll also learn what to eat in the data center. Spoiler: the answer is nothing but Brian might have an opinion otherwise.
Guest Bios
Brian O’Sullivan: Brian currently heads Product Management for Cumulus Linux. For 15 or so years he’s held software Product Management positions at Juniper Networks as well as other smaller companies. Once he saw the change that was happening in the networking space, he decided to join Cumulus Networks to Continue reading
I’m writing to the Internet Society community today with a notice that there is a key change to the Procedures for Selecting Trustees starting this year. This change reduces the duration of voting period from 28 to 14 days in the Internet Society Board of Trustees elections through which Chapters and Organization Members get to elect candidates to the Board.
If you read the 2019-2020 Elections Timetable carefully, you may notice that the Candidates Forum and the voting period are no longer done in parallel. As the below timeline shows, the 28-day period that used to be allocated for voting and the Candidates Forum is now split into two distinct sequential stages: the first 14 days is for the Candidates Forum and the second 14 days is for voting.
This decision was made for two reasons.
The first is to allow candidates to be heard fully before votes are cast. Upon examining the activity log of the last elections, we realized that some voters cast their ballots before the candidates had a chance to interact with the community. Voting before hearing what candidates have to say in the Candidates Forum is detrimental to the elections process as it encourages Continue reading
The company claims Contrail Insights will provide customers with historical and real-time...
The effort, which involves the installation and operation of 6,000 new cell sites, will fulfill a...
On Veterans Day, and every day, we give thanks to our veterans. We are fortunate to have Brent Salisbury, Siobhan Casey, and Johnny Gonzalez, as Docker colleagues who were in the United States Marine Corps Reserve, the United States Army Reserve, and the United States Marine Corps. Thank you all for your service, hard work, and dedication. As a thank you for their service, we’re profiling them on our blog.
Software Alliance Engineer.
4.5 years.
Data Networking has been my passion since college. Working at Docker has afforded me the opportunity to help usher in a new software paradigm in what can be achieved in host networking and security versus the traditional proprietary hardware models of the past.
It may sound cliche, but find your passion. Everyone in technology is Continue reading
Forging ahead: Facebook plans to move ahead with plans to expand encryption despite concerns from law enforcement agencies that it will be used by criminals, the New York Times reports. Facebook’s decision to expand encryption across its Messenger platform comes after complaints by top law enforcement officials in the United States, United Kingdom, and Australia that Facebook’s plan to encrypt messaging on all its platforms would make it more difficult to find child sex predators and pornographers.
Investigate the ISPs: Mozilla has asked Congress to investigate data collection by Internet service providers following reports that Comcast is lobbying against browser plans to implement the encryption scheme DNS-over-HTTPS, Vice reports. Mozilla’s rollout of DNS-over-HTTPS “has raised questions about how ISPs collect and use sensitive user data in their gatekeeper role over internet usage,” the browser maker wrote.
The next billion: The next billion Internet users will have significantly different goals and needs than the first billion, Quartz says. While many observers have talked about the Internet being a tool to deliver basic needs, many new users will be focused on using the Internet for leisure activities, the article predicts. And while many users in the West are focused on privacy, many Continue reading
The top security concerns related to 5G include a larger attack surface, device proliferation, IoT...
BGP Route Reflector in Plain English, in this post, I will explain you the BGP Route Reflector basics, after you read this post, you will be able to answer many questions regarding BGP Route Reflectors.
I am explaining this topic in deep detail in my Onsite CCDE , Live/Webex CCDE , Self Paced CCDE and also my specialized “BGP Zero to Hero” course.
Outline of this post is as below.
To have a great understanding of SP Networks, you can check my new published “Service Provider Networks Design and Perspective” Book. It covers the SP network Technologies with also explaining in detail a factious SP network. Click here
What is BGP Route Reflector ?
A route reflector (RR) is a network routing component for BGP (RFC 4456). It offers an alternative to the logical full-mesh requirement of internal border gateway protocol (IBGP).
Above is the wikipedia definition of BGP Route Reflector. Let’s extend the definition a bit.
BGP Route Reflector Continue reading
“The larger vision here is that Mist is the cornerstone of Juniper’s AI-driven enterprise...
What does PE-CE mean in the context of MPLS ? What is CE , P and PE device in MPLS and MPLS VPN ?
These are foundational terms and definition in MPLS.
MPLS is one of the most commonly used encapsulation mechanism in Service Provider networks and before studying more advanced mechanisms, this article is must read.
In order to understand PE-CE, we need to understand first what are PE and CE in MPLS.
I am explaining this topic in deep detail in my Instructor Led CCDE and Self Paced CCDE course.
Let’s take a look at below figure.
Note: If you are looking for a much more detailed resource on this topic, please click here.
MPLS VPN PE-CE
Figure -1 MPLS network PE, P and CE routers
In Figure-1 MPLS network is shown. This can be an Enterprise or Service Provider network. MPLS is not only a service provider technology. It can provide segmentation/multi tenancy for the enterprise environment as well.
Three different types of router are shown. CE , PE and P routers.
CE devices are located in the customer site. PE and P devices are located in the Service Provider site.
If it is Enterprise network, WAN Continue reading
BGP route reflectors, used as an alternate method to full mesh IBGP, help in scaling.
BGP route reflector clustering is used to provide redundancy in a BGP RR design. BGP Route reflectors and RR clients create a cluster. (Cluster = BGP RR + BGP RR Clients)
I am explaining this topic in deep detail in my Onsite CCDE , Live/Webex CCDE , Self Paced CCDE and also my specialized “Live/Webex BGP Zero to Hero” course.
In IBGP topologies, every BGP speaker has to be in a logical full mesh. So, every BGP router has to have a direct IBGP neighborship with each other. However, route reflector is an exception.
If you place a BGP Route Reflector , IBGP router sets up BGP neighborship with only the route reflectors.
In this article, I will specifically mention the route reflector clusters and its design.
For those who want to understand BGP Route Reflectors, I highly recommend my ‘ BGP Route Reflector in Plain English ‘ post.
If you want to learn Route Reflector Loop Problem , check this post
Also, I explained BGP Route Reflectors, Route Reflector Design Options and many other Service Provider Design topic in my Service Provider Design Workshop.
In a recent Packet Pushers Heavy Networking episode, Ethan and Greg discussed how difficult SD-WAN is, and why you shouldn’t outsource your SD-WAN to a MSP. So, how difficult is really SD-WAN?
Now, this is of course going to depend on your organization’s level of skill, as well as what vendor you go with, but there are still some conclusions that we can come to.
Most of the SD-WAN solutions are operated by cloud-hosted SDN controllers, where the vendor has setup the virtual machines running the software for you. This greatly simplifies a lot of things that have been painful in the past. From a Cisco perspective, this is some of the pain that has been removed from you:
This means Continue reading
This is the fifth post in the Loading Configs series. In this post, we will cover the load set command. …
The post Junos – Loading Configs – 5 of 5 – Set appeared first on Fryguy's Blog.
Last Thursday morning I found this gem in my Twitter feed (courtesy of Stefan de Kooter)
Greg Cusanza in #BRK3192 just announced #Azure Extended Network, for stretching Layer 2 subnets into Azure!
As I know a little bit about how networking works within Azure, and I’ve seen something very similar a few times in the past, I was able to figure out what’s really going on behind the scenes in a few seconds… and got reminded of an old Russian joke I found somewhere on Quora:
Read more ...Snap: a microkernel approach to host networking Marty et al., SOSP’19
This paper describes the networking stack, Snap, that has been running in production at Google for the last three years+. It’s been clear for a while that software designed explicitly for the data center environment will increasingly want/need to make different design trade-offs to e.g. general-purpose systems software that you might install on your own machines. But wow, I didn’t think we’d be at the point yet where we’d be abandoning TCP/IP! You need a lot of software engineers and the willingness to rewrite a lot of software to entertain that idea. Enter Google!
I’m jumping ahead a bit here, but the component of Snap which provides the transport and communications stack is called Pony Express. Here are the bombshell paragraphs:
Our datacenter applications seek ever more CPU-efficient and lower-latency communication, which Pony Express delivers. It implements reliability, congestion control, optional ordering, flow control, and execution of remote data access operations. Rather than reimplement TCP/IP or refactor an existing transport, we started Pony Express from scratch to innovate on more efficient interfaces, architecture, and protocol. (Emphasis mine).
and later on “we are seeking to grow Continue reading
Bill McDermott finds a home at ServiceNow; Riverbed banks a new CEO, plus the latest executive...