Huawei S1720 Series Configuration Guide

l The network type of a serial interface or a POS interface running PPP or HDLC is P2P.
l The network type of an ATM interface or a Frame Relay (FR) interface is NBMA.
NOTE
A P2MP network is forcibly changed from another other type of network.
The network types of the interfaces on both ends of a link must be the same; otherwise, the OSPF
neighbor relationship cannot be established.
Perform the following steps on the switch running OSPF.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The interface view is displayed.
Step 3 Run:
ospf network-type { broadcast | nbma | p2mp | p2p }
The network type of the OSPF interface is configured.
When the network type is configured for an interface, the original network type of the interface
is replaced.
The network type can be configured based on the real world situations.
l On an interface with the broadcast network type, if a router that does not support the multicast
address exists, change the network type of the interface to NBMA.
l On an interface with the NBMA network type, if the network is fully meshed or any two
routers are directly connected, change the network type of the interface to broadcast and do
not configure neighboring router information on the interface.
l On an interface with the NBMA network type, if the network is not fully meshed, change
the network type of the interface to P2MP. After that, two indirectly connected routers can
communicate through one router that can directly reach both the two routers. After the
network type of the interface is changed to P2MP, configuring neighboring router
information on the interface is unnecessary.
l If only two routers run OSPF on the same network segment, changing the network type of
the interface to P2P is recommended.
NOTE
OSPF cannot be configured on a null interface.
----End
4.4.3 Configuring NBMA Network Attributes
To implement OSPF functions, configure NBMA network attributes.
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.
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Huawei S1720 Series Specifications

General

Operating Humidity	5% to 95% (non-condensing)
Uplink Ports	4 x GE combo ports
VLANs	4094
Power Supply	AC 100-240V, 50/60Hz
Layer 2 Features	VLAN
Layer 3 Features	Static routing
Management	SNMP
Operating Temperature	0°C to 45°C
Storage Temperature	-40°C to +70°C
Dimensions (W x D x H)	442 mm x 220 mm x 43.6 mm