• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 2162
  • Last Modified:

bgp - downstream and upstream peers

This should be an easy one.
When dealing with BGP, anyone have a  good explanation to understand the concept of downstream peers and upstream peers?
It can be confusing when you're studying and they mention these terms.
0
trojan81
Asked:
trojan81
2 Solutions
 
mikebernhardtCommented:
An upstream peer is someone who is sending you routes who is closer to the "heart" of the internet than you. In other words, a backbone ISP is upstream to a regional ISP, who is upstream to a customer.

A downstream peer is someone who is receiving the routes you've sent, which could include your own routes and those of your upstream peers which you are passing on.
0
 
harbor235Commented:


Adding to Mike's input, I would also say that typically an upstream peer you speak eBGP with
and a downstream peer you speak iBGP (external peer vs internal peer). Generally this is true but not true in all cases.


harbor235 ;}
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now