The latest Intelligent Routing Platform v4.2.7 has just been released. This update...
The dark side of BGP community attributes
A while ago, RIPE Labs published the two-part article BGP Communities - A Weapon for the Internet. That may have been...
BGP peer groups, dynamic update peer groups and BGP templates
As a router gains more and more BGP neighbors, two issues arise. The first one is that with many neighbors, whenever...
BGP errors, BGP error codes, and BGP error handling
In this blog post we’ll be looking at BGP errors. For that, our first question should be: is there an error, or is...
BGP – the right tool for so many jobs
Like other very successful protocols such as HTTP and DNS, over the years BGP has been given more and more additional...
BGP security: an overview of the RPKI framework
The Resource Public Key Infrastructure (RPKI) system is a way to couple an IP address range to an autonomous system...
The 768k or Another Internet Doomsday? Here’s how to deal with the TCAM overflow at the 768k boundary.
On August 8th, 2014 some ISPs experienced a phenomenon called the “512k Day”. The global BGP routing table, which...
BGP Labeled Unicast (BGP-LU)
This blog post discusses BGP Labeled Unicast (BGP-LU) which is used in multi-regional networks to carry the label...
Recursive Lookup in BGP
The aim of this article is to discuss the importance of Recursive Lookup in BGP. First of all we need to understand...
Accumulated IGP and BGP
RFC 7311 defines an optional non-transitive BGP attribute called the Accumulated IGP Metric Attribute (AIGP). As we...
QoS Policy and its propagation via BGP (QPPB)
Quality of Service (QoS) refers to a collection of technologies that networking devices use to apply different...
BGP Conditional Route Injection
We have recently posted the BGP Route Aggregation eBook that discusses the benefits of route aggregation and explains...
BGP Route Dampening: obsolete or still used in the industry?
The unstable route whose availability alters repeatedly is called a flap. When flaps occur, an excessive number of BGP...
BGP Attribute Filtering and Error Handling
The BGP Attribute Filter feature enables BGP speakers to take a certain action based on the presence of a specified...
BGP Optimal Route Reflection as an alternative to BGP Add Path
Full iBGP Mesh and Route Reflection To avoid loops in a Full iBGP Mesh, BGP routers are only allowed to learn prefixes...
Network Address Translation (NAT) and BGP Explained
Network Address Translation (NAT) was originally described in RFC 1631. Although initially presented as a short term...
Advertising Multiple Paths in BGP (BGP-Addpath)
The BGP advertisement of a prefix with new attributes replaces the previous announcement of that prefix. This behavior...
BGP and Traffic Engineering Mechanisms for WISPs
In this blog post, we will take a look at Kevin Myers's presentation where he discusses deployment of both OSPF and...
Bit Indexed Explicit Replication and the BGP Extensions for BIER
In this article we’ll take a look at the architecture for multicast forwarding called the Bit Indexed Explicit...
BGP/MPLS Layer 3 VPNs Practical Configuration
In our previous blog article we’ve discussed the benefits and the fundamental principles of BGP/MPLS L3 VPNs. We have...
BGP / MPLS Layer 3 VPNs
What is VPN? Virtual Private Networks (VPN) are designed to provide users with the private networks capabilities over...