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• If a router on an NBMA network has only one neighbor, you can change the network type to P2P
to save costs.
Two broadcast-, NBMA-, and P2MP-interfaces can establish a neighbor relationship only when they
are on the same network segment.
Configuration prerequisites
Before you configure OSPF network types, perform the following tasks:
• Configure IP addresses for interfaces to ensure IP connectivity between neighboring nodes.
• Enable OSPF.
Configuring the broadcast network type for an interface
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface
interface-type
interface-number
N/A
3. Configure the OSPF network
type for the interface as
broadcast.
ospf network-type broadcast
By default, the network type of an
interface depends on the link layer
protocol.
4. (Optional.) Set a router
priority for the interface.
ospf dr-priority
priority The default router priority is 1.
Configuring the NBMA network type for an interface
After you configure the network type as NBMA, you must specify neighbors and their router priorities
because NBMA interfaces cannot find neighbors by broadcasting hello packets.
To configure the NBMA network type for an interface:
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface
interface-type
interface-number
N/A
3. Configure the OSPF
network type for the
interface as NBMA.
ospf network-type nbma
By default, the network type of an
interface depends on the link layer
protocol.
4. (Optional.) Set a router
priority for the interface.
ospf dr-priority
priority
The default setting is 1.
The router priority configured with this
command is for DR election.
5. Return to system view.
quit
N/A
6. Enter OSPF view.
ospf
[
process-id |
router-id
router-id |
vpn-instance
vpn-instance-name ] *
N/A
7. Specify a neighbor and
peer
ip-address [
dr-priority
By default, no neighbor is specified.
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