search

SpriteLink / NIPAP

Neat IP Address Planner - NIPAP is the best open source IPAM in the known universe, challenging classical IP address management (IPAM) systems in many areas.
https://spritelink.github.io/NIPAP/
MIT License
536 stars 132 forks source link

Import script for route data #194

Open plajjan opened 12 years ago

plajjan commented 12 years ago

Write a script that can parse 'show ip bgp' or similar from IOS/JUNOS or something for importing it into NIPAP.

plajjan commented 10 years ago

Not sure what would be sensible to put as description on the prefixes though?

Would this really be useful at all?

CrackerJackMack commented 9 years ago

+1 this is useful and usually a value add for more commercial products (typically labeled discovery).

plajjan commented 9 years ago

Not sure what you mean with labeled discovery. I'm still at a loss when it comes to where these tools get their data from... or are they parsing interface descriptions?

CrackerJackMack commented 9 years ago

SNMP has all this data on 3 platforms I've used, IOS, Junos, and Brocade. Depending on your network and how many routers you have carrying full routes, you can do per-device discovery and BGP peer walking to find all the advertised and locally connected routes/interfaces. This works out well because in some networks there is a strict aggregate-only policy in place so nothing less than a /24 is advertised (except in anycast which a /32 is allowed). same goes for v6 where the policy dictates nothing less than a /56 maybe advertised.

So, BGP is good for initial discovery but it doesn't help you import your actual assignments in a lot of cases.

Interface IPs: http://www.net-snmp.org/docs/mibs/ip.html#ipv4InterfaceTable Pulling ARP: http://serverfault.com/questions/441072/how-do-i-poll-the-arp-table-with-an-snmp-oid Installed routes: http://stackoverflow.com/questions/3405363/accessing-routing-table-via-snmp

BGP MIBs: http://www.snmplink.org/OnLineMIB/Cisco/index.html#1500 http://www.juniper.net/techpubs/en_US/junos14.2/topics/reference/mibs/mib-jnx-bgpmib2.txt http://crunchtools.com/software/crunchtools/cacti/grpah-bgp-neighbors/