Archive

Category Archives for "Networking"

MC-LAG lab – advanced IRB functionality

For simplified Layer 3 gateway services, where Layer 3 routing protocols are not run on the MC-LAG peers, you simply configure the same Layer 3 gateway IP address on both MC-LAG peers and enable IRB MAC address synchronization. This IP address is used as the default gateway for the MC-LAG servers or hosts.
For more advanced Layer 3 gateway services, where Layer 3 routing protocols and Layer 3 multicast operations are required on the MC-LAG peers, you configure unique IRB interface addresses on each MC-LAG peer and then configured the virtual router redundancy protocol (VRRP) between the peers in an active/standby role.
To help with some forwarding operations, the IRB MAC address of each peer is replicated on the other peer and is installed as a MAC address with the forwarding next hop of the ICL-PL. This is achieved by configuring a static ARP entry for the remote peer.

IRB interfaces configurations:

vQFX1:
irb {
    unit 100 {
        family inet {
            address 172.16.0.1/24 {
                arp 172.16.0.2 l2-interface xe-0/ Continue reading

Last 10 days for the August 2017 CCDE Online Bootcamp

My Webex based, Online CCDE Bootcamp will start in 10 days.    August 7, 2017 is the first day of my live CCDE Bootcamp.   As the best CCDE Training, I will cover all CCDE Blueprint topics as usual. Before and after the Bootcamp, there are many other resources which you will go through. These […]

The post Last 10 days for the August 2017 CCDE Online Bootcamp appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Moved to new house , Finished the new course but !

I have been very busy for last one month.   I announced 2 , 3 months before Service Provider Design Workshop and conducted it at last two weekends.   I moved to new house, lot’s of things to deal with, believe me. First time I will share the photos of it here.   Meanwhile I […]

The post Moved to new house , Finished the new course but ! appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Reaffirming the Internet as a Force for Good: The Next 25 Years

To mark its 25th Anniversary, the Internet Society is beginning a global dialogue on the impact of the Internet on societies.  So far, we have held discussions at Chatham House in London, and opened up the dialogue in a recent public forum with more than 100 participants from 30 countries across Africa, the Middle East, Europe & Central Asia, Latin America and the Caribbean, and South Asia. 

Konstantinos Komaitis

Worth Reading: IPv4 route lookup on Linux

During the lifetime of an IPv4 datagram inside the Linux kernel, one important step is the route lookup for the destination address through the fib_lookup() function. From essential information about the datagram (source and destination IP addresses, interfaces, firewall mark, …), this function should quickly provide a decision. —Vincent Bernat @MTU Ninja

The post Worth Reading: IPv4 route lookup on Linux appeared first on rule 11 reader.

Worth Reading: DNS Hijacking is Real

Over the years hackers have hijacked many domain names by manipulating their DNS records to redirect visitors to malicious servers. While there’s no perfect solution to prevent such security breaches, there are actions that domain owners can take to limit the impact of these attacks on their Web services and users. —Lucisn Constantin @ The New Stack

The post Worth Reading: DNS Hijacking is Real appeared first on rule 11 reader.

Cybersecurity is the Top Internet Policy Concern in the Asia-Pacific Region

This month at the Asia-Pacific Regional IGF in Bangkok we will release the fourth annual Internet Society Survey Report on Internet Policy Issues in Asia-Pacific.

Findings from this year’s report show that cybersecurity, access, data protection, connectivity and privacy are the top five concerns for Internet users. These issues have more or less remained constant since 2014, however, not surprisingly this year cybersecurity has become the top issue.

Other issues that respondents expressed concern for relate to fake news, increasing digital surveillance that violates privacy rights, and more frequent instances of censorship and site-blocking that impact freedom of expression.

Rajnesh Singh

The History of The Wireless Field Day AirCheck

Mobility Field Day 2 just wrapped up in San Jose. It’s always a little bittersweet to see the end of a successful event. However, one thing that does bring a bit of joy to the end of the week is the knowledge that one of the best and longest running traditions at the event continues. That tradition? The Wireless/Mobility Field Day AirCheck.

The Gift That Keeps Giving

The Wireless Field Day AirCheck story starts where all stories start. The beginning. At Wireless Field Day 1 in March of 2011, I was a delegate and fresh off my first Tech Field Day event just a month before. I knew some wireless stuff and was ready to learn a lot more about site surveys and other great things. Little did I know that I was about to get something completely awesome and unexpected.

As outlined in this post, Fluke Networks held a drawing at the end of their presentation for a first-generation AirCheck handheld wireless troubleshooting tool. I was thrilled to be the winner of this tool. I took it home and immediately put it to work around my office. I found it easy to use and it provided great information Continue reading

Study tip – How you should read the posts on any website

You search something on Google, or read the materials by referrals. You do research on a particular topic and find many resources. How you are organizing your study ? What is the most important thing even before you start reading any technology topic ? Technology is changing g too fast. At least the many areas in networking. […]

The post Study tip – How you should read the posts on any website appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

1 … 1,663 1,664 1,665 1,666 1,667 … 3,426