A JavaScript program to render the link state database (LSDB) from an Open Shortest Path First (OSPF) network using GraphViz. See the GitHub project page.
Paste your snmpwalk output into the left text area. The resulting graph will be shown in the right text area in DOT language. This markup is rendered using Viz.js. Use either snmpwalk -v3 -l auth -u [USERNAME] -a SHA -A [AUTHPASS] -x AES -X [PRIVPASS] [TARGET] OSPF-MIB::ospfLsdbAdvertisement -m +OSPF-MIB or (faster) snmpwalk -v3 -l auth -u [USERNAME] -a SHA -A [AUTHPASS] -x AES -X [PRIVPASS] [TARGET] .1.3.6.1.2.1.14.4.1.8 to gather the LSDB.