RFC 7454: BGP Operations and Security
After almost exactly three years of struggles our BGP Operations and Security draft became RFC 7454 – a cluebat (as Gert Doering put it) you can use on your customers and peers to help them fix their BGP setup.
Without Jerome Durand this document would probably remain forever stuck in the draft phase. It’s amazing how many hurdles one has to jump over to get something published within IETF. Thanks a million Jerome, you did a fantastic job!
Using sipcalc The Great and Powerful Subnet Calculator
In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking,...[[ Summary content only, you can read everything now, just visit the site for full story ]]
Using sipcalc The Great and Powerful Subnet Calculator
In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking,...[[ Summary content only, you can read everything now, just visit the site for full story ]]
Using sipcalc The Great and Powerful Subnet Calculator
In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking,...[[ Summary content only, you can read everything now, just visit the site for full story ]]
Using Python’s Virtual Environments with Git For More Than Coding
Most think of python virtualenv as a way to create isolated development environments within a single PC, Laptop, Server, whatever their choice is...[[ Summary content only, you can read everything now, just visit the site for full story ]]
Using sipcalc The Great and Powerful Subnet Calculator
In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking,...[[ Summary content only, you can read everything now, just visit the site for full story ]]
BGP Weight Attribute
Original content from Roger's CCIE Blog Tracking the journey towards getting the ultimate Cisco Certification. The Routing & Switching Lab Exam
The BGP weight attribute is the first on the list in the BGP best path algorithm Prefer the path with the highest WEIGHT. Note: WEIGHT is a Cisco-specific parameter. It is local to the router on which it is configured. So if you want to influence your BGP routing outbound on a cisco router you... [Read More]
Post taken from CCIE Blog
Original post BGP Weight Attribute
NFD9: Cumulus Networks
Cumulus Networks gave a great presentation at Network Field Day 9. They presented their vision of how they’re working to improve networking. But they were also clear about what they don’t do, and where they will instead enable others.
Linux on a switch? Seems natural to me
Many network engineers started out running cables, and doing low-level networking. They build up to designing & running more complex networks. I came at it from a different direction. I first ran Linux systems in 1999. My first professional job was working with HP-UX in 2000, and I later moved into running Check Point firewalls on Nokia IPSO. I was well-used to working with Unix-like systems, and it was completely natural to me to run tcpdump on a network device.
To become an effective network security engineer, I had to learn more about routing & switching. But because I had that *nix background, I was always frustrated by the limited capabilities offered by IOS. “| include” is a poor substitute for grep. Yes, you can do some stuff with TCL, but would you want to? Packet capture was a poor joke until recently.
So when I first heard about Cumulus, it made a Continue reading