Configuration Prerequisites; Configuring The Network Type Of An Ospf Interface; Configuring An Nbma/P2Mp Neighbor - H3C S5600 SERIES Operation Manual

reachable to each other through a virtual circuit. However, in many cases, this cannot be implemented
and you need to use a command to change the network type forcibly.
Configure the network type of an interface as P2MP if not all the routers are directly accessible on an
NBMA network. You can also configure the network type of an interface to P2P if the router has only one
peer on the NBMA network.
In addition, when configuring a broadcast network or NBMA network, you can also specify DR election
priority for each interface of a router to control the DR/BDR election in the network. Thus, the router with
higher performance and reliability can be selected as a DR or BDR.

Configuration Prerequisites

Before configuring the network type of an OSPF interface, perform the following tasks:
Configuring the network layer address of the interface so that the adjacent node is reachable at
network layer
Performing basic OSPF configuration

Configuring the Network Type of an OSPF Interface

Follow these steps to configure the network type of an OSPF interface:
To do...
Enter system view
Enter interface view
Configure the network
type of the OSPF
interface
After an interface has been configured with a new network type, the original network type of the
interface is removed automatically.
An adjacency can be established between two interfaces configured as broadcast, NBMA, or
P2MP only if the interfaces are on the same network segment.
If the network type of an interface is NBMA or is changed to NBMA, you must use the peer
command to specify the peer.
If the network type of an interface is P2MP and the unicast keyword is specified, an interface
sends packets in the unicast mode. In this case, you must use the peer command to specify the
peer.

Configuring an NBMA/P2MP Neighbor

When the network type of an interface on the router is one of the following types, you need to specify the
IP address of the neighbor router:
NBMA
Use the command...
system-view
interface interface-type
interface-number
ospf network-type
{ broadcast | nbma | p2mp
[ unicast ] | p2p }
4-15
Remarks
—
—
Required
By default, the network type of an
interface depends on the physical
interface.