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3Com Switch 7750 Series
Command Reference Guide – Routing Protocol Chapter 3 OSPF Configuration Commands
3-42
Example
# Configure interface Vlan-interface 3 to write MTU value area when sending DD
packets.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] interface Vlan-interface 3
[3Com-Vlan-interface3] ospf mtu-enable
3.1.36 ospf network-type
Syntax
ospf network-type { broadcast | nbma | p2mp | p2p }
undo ospf network-type
View
Interface view
Parameter
broadcast: Changes the interface network type to broadcast.
nbma: Changes the interface network type to NBMA.
p2mp: Changes the interface network type to point-to-multipoint.
p2p: Changes the interface network type to point-to-point.
Description
Use the ospf network-type command to configure the network type of OSPF
interface.
Use the undo ospf network-type command to restore the default network type of the
OSPF interface.
OSPF divides networks into four types based on link layer protocol:
z Broadcast: If Ethernet or FDDI is adopted, OSPF defaults the network type to
broadcast.
z Non-Broadcast Multi-access (nbma): If Frame Relay, ATM, HDLC or X.25 is
adopted, OSPF defaults the network type to NBMA.
z Point-to-Multipoint (p2mp): OSPF will not default the network type of any link
layer protocol to p2mp. The general undertaking is to change a partially
connected NBMA network to p2mp network if the NBMA network is not
fully-meshed.
z Point-to-point (p2p): If PPP, LAPB or POS is adopted, OSPF defaults the
network type to p2p.