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- Announcements
- Basic Networking
- Best Practices in Network Design
- BGP
- BGP Security
- BOOTCAMP ANNOUNCEMENTS
- Broadband
- CCDE BOOTCAMP
- CCDE CERTIFICATION
- CCDE Preparation Recommendations
- CCIE Enterprise Infrastructure
- CCIE SP
- Certifications
- Cisco SD-WAN
- Cloud Computing
- Data Center
- Definitions
- Design Scenarios
- Discussions
- DMVPN
- EIGRP
- Fast Convergence
- FUNNY
- IGP
- Inspiring
- Inter AS MPLS VPN
- IOT
- IPv6
- IS-IS
- Layer 2 Technologies
- Life
- LISP
- Mobile Broadband
- MPLS
- MPLS Traffic Engineering
- MPLS Transport Profile
- MPLS VPNs
- Multicast
- Network Design
- Network Monitoring
- OSPF
- Peering
- Quality of Service
- SD-Access
- SD-WAN
- Security
- Segment Routing
- Service Provider Networks
- Sub Marine Cables
- TCP - UDP - QUIC
- Transport Network
- Uncategorized
- VPN
- Wireless
BGP Routing Security Discussion on Linkedin
After I published the Telstra’s hijack effecting many networks post on Linkedin, one of my students asked couple good questions under that post.
Telstra’s Hijack effected many networks today!
Today I woke up with a Telstra’s ProtonMail Hijack news. In fact, one of my Linkedin connections, friend, sent me the ITNews post about the incident.
Century Link/Level 3 Outage is one of the biggest Internet Problem! 3.5% Drop in Global Internet Traffic
On August 30, 2020, Level 3/Century Link, AS 3356 had major Internet outage. In fact this outage effected massive amount of networks, including very well know ones such as Amazon, Microsoft, Twitter, Discord, Reddit …
BGP Confederation Fundamentals – What is BGP Confederation?
BGP Confederation is specified in RFC 5065, which describes the use of Autonomous System Confederations for BGP – Border Gateway Protocol.
BGP Route Server – Scalable IXP BGP Architecture
BGP Route Server is used at the Internet Exchange Point to simplify BGP Peering process. Instead of managing, maintaining hundreds of Peering sessions in large Internet Exchange Point, BGP Route Server is used.
MPLS Applications/Services
MPLS Applications, what are the MPLS Applications?. MPLS Applications mean MPLS Services. So what can we do with MPLS basically.
Integrated Services QoS – Hard QoS
Integrated Services QoS – Hard QoS is first QoS approach, but currently we are not using. At the end of this post, you will know what is Integrated QoS, what was the idea with it …
Understanding CGN – Carrier Grade NAT
CGN is also known as LSN (Large Scale NAT). And in my opinion, it should be called LSN since there is nothing for CGN to be a carrier grade. It is just a NAT. With …
Some must to know information about VPNs
VPN – Virtual Private Network is most common overlay mechanism in Networking. We have many of them, GRE, mGRE, IPSEC, DMVPN, GETVPN, LISP, FlexVPNs, MPLS VPNs and so on. But what are the important and …
OPEX and CAPEX in Network Design
OPEX and CAPEX are two important network design considerations. From the high level we should understand these two design requirements.
BGP Path Validation New Mechanism – AS Cones
When it comes to Routing Security, BGP Origin and Path Validation should be understood very well.
Flat/Single Level vs. Multi Level IS-IS Design Comparison
Flat/Single Level vs. Multi Level IS-IS Design Comparison. Flat routing means, without hierarchy, entire topology information of the network is known by each and every device in the network.