Distributed denial-of-service (DDoS) attacks can be a major threat to the availability...
Using PeeringDB to set up your internet exchange peering – Part 1
When networks exchange traffic without having a customer-provider relationship, this is called peering. We've talked...
BGP and equal-cost multipath (ECMP)
One given in the network world is that bandwidth will increase. So that Gigabit Ethernet link that provided bandwidth...
Resetting BGP sessions
It's been a while since we talked about filtering BGP updates. BGP routers need to be configured with the right...
BGP’s hold and keepalive timers, detecting dead neighbors and BFD
When the BGP session between two routers is established, the two routers exchange...
Debugging BGP states
Border Gateway Protocol is unique among routing protocols because it requires a number of parameters to be configured...
A fresh look at BGP’s NEXT_HOP
Once a BGP session is established, routers will exchange two types of messages: KEEPALIVE and UPDATE. Keepalive...
Understanding BGP Communities
After reading the title of this article you may be thinking of small neighborhoods...