4.4 Configuring OSPF on the NBMA or P2MP Network
This section describes how to configure OSPF and modify attributes on the NBMA or point-to-
multipoint (P2MP) network to flexibly construct the OSPF network.
4.4.1 Establishing the Configuration Task
To implement OSPF functions, configure OSPF on the NBMA or P2MP network.
Applicable Environment
As shown in Table 4-1, OSPF classifies networks into four types based on the types of link layer
protocols.
NOTE
Differentiated OSPF configurations that are applicable to the NBMA network and P2MP network are
provided in this section.The OSPF configurations not provided here are applicable to the four types of
networks.
Table 4-1 Network types supported by OSPF
Network Type
Characteristic Default Configuration
Broadcast On the broadcast network, Hello
packets, LSU packets, and LSAck
packets are multicasted; DD
packets and LSR packets are
unicasted.
If the link layer protocol is
Ethernet or Fiber Distributed Data
Interface (FDDI), OSPF regards
the network as a broadcast
network by default.
Non-broadcast
multiple access
(NBMA)
On an NBMA network, Hello
packets, DD packets, LSR
packets, LSU packets, and LSAck
packets are unicasted.
The NBMA network must be fully
meshed. Any two switches on the
NBMA network must be directly
reachable.
If the link layer protocol is ATM,
OSPF regards the network as an
NBMA network by default.
Point-to-point
(P2P)
On a P2P network, Hello packets,
DD packets, LSR packets, LSU
packets, and LSAck packets are
multicasted.
If the link layer protocol is PPP,
HDLC, or Link Access Procedure
Balanced (LAPB), OSPF regards
the network as a P2P network by
default.
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 4 OSPF Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
98
To Next Page
Loading...
Need help?
General
