INS_RL1000GW_REV– 15 Jul 2016 PAGE 78
INSTALLATION AND OPERATION MANUAL
RL1000GW
TECH SUPPORT: 1.888.678.9427
OSPF
OSPF (Open Shortest Path First) protocol is an Interior Gateway Protocol used to distribute routing
information within a single Autonomous System. Routers use link-state algorithms to send routing
information to all nodes in an inter-network by calculating the shortest path to each node based
on topography of the Internet constructed by each node. Each router sends that portion of the
routing table (keeps track of routes to particular network destinations), which describes the state
of its own links, and it also sends the complete routing structure (topography).
The advantage of shortest path first algorithms is that they result in smaller more frequent update
everywhere. They converge quickly, thus preventing such problems as routing loops and Count-
to-Infinity (when routers continuously increment the hop count to a particular network). This makes
for a stable network.
OSPF Commands Hierarchy
+ root
+ router ospf
-
enable
-
exit
+ configure terminal
+
router
ospf
- [no] area { A.B.C.D | < metric id ,(0-4294967295)> }
- [no] router-id < A.B.C.D >
- [no] network { A.B.C.D/M | <interface name ,eth1.(id)> }
- [no] passive-interface <interface name,eth1.(id)>
- [no] redistribute {connected | static}
-
[no]
neighbor
A.B.C.D
-
write
-
exit
- exit
