Everything in networking has a cost. Sometimes it’s bandwidth. Sometimes it’s processing overhead. With iBGP, the cost is session count, and it gets ugly fast. If you’ve spent any time with BGP documentation, you’ve heard the phrase “full mesh.” If you haven’t, you’re about to. And once you understand why it’s required and what it […]
The iBGP Full Mesh Problem: Or, Why Your Brain Will Hurt Later Read More »
If there’s one thing that trips up engineers new to BGP, it’s the difference between eBGP and iBGP. Not because the concept is hard, but because the implications are sneaky. The sessions look the same. The commands are almost identical. But the behavior is different enough to absolutely destroy a network if you’re not paying
eBGP vs iBGP: A Field Guide to Not Confusing Yourself Read More »
Someone on your team suggested BGP. Or you read an article. Or you watched a conference talk where the speaker made it sound like BGP was the answer to everything. And now you’re wondering if your network actually needs it. For most networks, the answer is still no That’s not a knock on BGP, it
Do You Actually Need BGP? (An Honest Answer for People Who Hate Wasting Time) Read More »