Ospf Point-To-Point Links - Dell PowerConnect B-RX Configuration Manual

For example, to configure the feature in a network with three routers connected by a hub or switch,
each router must have the linking interface configured as a non-broadcast interface, and both of
the other routers must be specified as neighbors.
The output of the show ip ospf interface command has been enhanced to display information
about non-broadcast interfaces and neighbors that are configured in the same sub-net.
For example.
BigIron RX# show ip ospf interface
v20,OSPF enabled
In the Type field, "non-broadcast" indicates that this is a non-broadcast interface. When the
interface type is non-broadcast, the Non-broadcast neighbor config field displays the neighbors
that are configured in the same sub-net. If no neighbors are configured in the same sub-net, a
message such as the following is displayed.
***Warning! no non-broadcast neighbor config in 1.1.100.1 255.255.255.0

OSPF point-to-point links

In an OSPF point-to-point network, where a direct Layer 3 connection exists between a single pair of
OSPF routers, there is no need for Designated and Backup Designated Routers, as is the case in
OSPF multi-access networks. Without the need for Designated and Backup Designated routers, a
point-to-point network establishes adjacency and converges faster. The neighboring routers
become adjacent whenever they can communicate directly. In contrast, in broadcast and
non-broadcast multi-access (NBMA) networks, the Designated Router and Backup Designated
Router become adjacent to all other routers attached to the network.
NOTE
This feature is supported in Ironware software for BigIron RX releases 02.2.01 and later.
NOTE
This feature is supported on Gigabit Ethernet and 10-Gigabit Ethernet interfaces.
NOTE
This feature is supported on physical interfaces. It is not supported on virtual interfaces.
NOTE
Brocade supports numbered point-to-point networks, meaning the OSPF router must have an IP
interface address which uniquely identifies the router over the network. Brocade does not support
unnumbered point-to-point networks.
BigIron RX Series Configuration Guide
53-1001986-01
IP Address 1.1.20.4, Area 0
OSPF state BD, Pri 1, Cost 1, Options 2, Type nbma Events 6
Timers(sec): Transit 1, Retrans 5, Hello 10, Dead 40
DR: Router ID 1.1.13.1
BDR: Router ID 2.2.2.1
Neighbor Count = 1, Adjacent Neighbor Count= 2
Non-broadcast neighbor config: 1.1.20.1, 1.1.20.2, 1.1.20.3, 1.1.20.5,
Neighbor: 1.1.20.5
Authentication-Key:None
MD5 Authentication: Key None, Key-Id None, Auth-change-wait-time 300
Configuring OSPF
Interface Address 1.1.20.5
Interface Address 1.1.20.4
25
691