Configuring Ospf Network Types; Configuration Prerequisites; Configuring The Broadcast Network Type For An Interface - HP 5500 EI series Configuration Manual

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Step
4.
Configure a virtual link.

Configuring OSPF network types

OSPF classifies networks into the following types based on the link layer protocol:
Broadcast—When the link layer protocol is Ethernet or FDDI, OSPF classifies the network type as
broadcast by default.
NBMA—When the link layer protocol is Frame Relay, ATM, or X.25, OSPF classifies the network
type as NBMA by default.
P2P—When the link layer protocol is PPP, LAPB, or HDLC, OSPF classifies the network type as P2P
by default.
When you change the network type of an interface, follow these guidelines:
When an NBMA network becomes fully meshed, change the network type to broadcast to avoid
manual configuration of neighbors.
If any routers in a broadcast network do not support multicasting, change the network type to
NBMA.
An NBMA network must be fully meshed. OSPF requires that an NBMA network be fully meshed.
If a network is partially meshed, change the network type to P2MP.
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, complete 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

Step
1.
Enter system view.
2.
Enter interface view.
Command
vlink-peer router-id [ dead seconds
| hello seconds | { { hmac-md5 |
md5 } key-id { cipher cipher-string
| plain plain-string } | simple
{ cipher cipher-string | plain
plain-string } } | retransmit
seconds | trans-delay seconds ] *
Command
system-view
interface interface-type
interface-number
70
Remarks
By default, no virtual link is
configured.
Configure this command on both
ends of a virtual link, and the hello
and dead intervals must be identical
on both ends of the virtual link.
Remarks
N/A
N/A

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