Got into a what could have been a heated argument today with one of the guys at work. For various reasons I chose not to escalate the discussion, but rather decided to ask you guys. We have a Cisco ...

I cannot honestly imagine troubleshooting BGP without understanding the BGP table version. I use it all the time. Sometimes it is just a quick “eyeballing” of it to check to see if all the BGP table ...

In 2014, the Internet came to a shuddering halt because the hardware used in switching packets around the wired networks which connect it all together had no memory left to hold the secret decoder ...

There are a range of varying claims to BGP visibility or monitoring out there, terms which are themselves quite vague As the routing protocol that runs the Internet, Border Gateway Protocol (BGP) is a ...

The local preference attribute is used to prefer an exit point from the local autonomous system (AS). The local preference attribute is propagated throughout the local AS. If there are multiple exit ...

Facebook, Instagram, and WhatsApp are starting to come back online after a BGP routing issue caused an over five-hour worldwide outage. Today, at approximately 11:50 AM EST, all three websites were ...

Joel is an internationally recognized expert in the areas of security, networking and messaging. Follow him on X (formerly Twitter) @joelsnyder. If switching is critical to the enterprise, routing is ...

This is the 2nd post in the 3 part series of “Understanding the BGP Table Version”. Please visit http://www.networkworld.com/community/node/80089 to review part 1 ...