Similarly to the real-world where network operators can debug BGP using looking glasses, the mini-Internet provides a looking glass service that students can use to see the BGP routing table of every router in the mini-Internet.

Every container that runs a router pulls the routing table from the FRRouting CLI every 30 seconds and stores it in /home/looking_glass.txt. This file is bound to a file in the local filesystem according to this scheme: groups/gX/<location>/looking_glass.txt where X is the group number and <location> is e.g. ZURI.

Instead of directly looking at those files, the mini-Internet prints their content on the webpage automatically under the looking glass page.