ospfdiscoverysnmp

OSPF_SNMP_v1.0.py is an OSPF network discovery script. It allows the discovery of all OSPF network devices in the network, without connecting to each of them or knowing all their IP addresses. The user must provide the IP and SNMP community string of a single OSPF device in the network (for example, a device in the core) and the script searches for all other OSPF routers. Prior to running the script, the user should configure SNMPv2 community string on the device and also include the subnet between his PC and the router into the OSPF process, so he has IP connectivity to all other OSPF nodes.

After providing necessary info and the OSPF info is gathered, the user has three choices: display the OSPF routers info on the screen, export the data to a file for Excel importing and generate the OSPF topology showing neighborships, router IDs and neighbor IPs.

Tools used for coding and testing: Python 2.7.3, PySNMP, GNS3, Linux.

Tested on Cisco 2621, 2691, 3660.