What you can see with a Looking Glass
BGP summary tab
- Which autonomous systems have a connection to the route servers
- Their IPv4 and IPv6 addresses
- Since when the session is up
- How many prefixes they announce
- How many of these prefixes are "best prefixes"
- In case of an error the reason why a BGP session is down
BGP neighbour info tab
For each connection to the route servers you can find
- The list of prefixes
- AS path for each prefix
- Announced MED for each prefix
- Whether the prefix is "best"
Prefix info tab
For each prefix you can find
- List of AS numbers announcing this prefix
- AS path for each announcement
- List of BGP communities for each announcement
- Which announcement is best
For more information, watch the recorded webinar about the DE-CIX Looking Glasses.