F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Command Reference-6PW100

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Usage guidelines
After a virtual link is established via a Virtual-Template or Tunnel, two devices on the link from different
vendors may have different MTU values. To make them consistent, set the attached interfaces' MTU to the
default value 0.
After you configure this command, the interface checks whether the MTU in a received DD packet is
greater than its own MTU. If yes, the interface discards the packet.
Examples
# Enable GigabitEthernet 0/1 to add the interface MTU value into DD packets.
<Sysname> system-view
[Sysname] interface gigabitethernet 0/1
[Sysname-GigabitEthernet0/1] ospf mtu-enable
ospf network-type
Use ospf network-type to set the network type for an interface.
Use undo ospf network-type to restore the default network type for an interface.
Syntax
ospf network-type { broadcast | nbma | p2mp [ unicast ] | p2p }
undo ospf network-type
Default
The network type of an interface depends on its link layer protocol:
• For Ethernet, and FDDI, the network type is broadcast.
• For ATM, FR, and X.25, the network type is NBMA.
• For PPP, LAPB, HDLC, and POS, the network type is P2P.
Views
Interface view
Default command level
2: System level
Parameters
broadcast: Specifies the network type as broadcast.
nbma: Specifies the network type as NBMA.
p2mp: Specifies the network type as P2MP.
unicast: Specifies the P2MP interface to unicast OSPF packets. By default, a P2MP interface multicasts
OSPF packets.
p2p: Specifies the network type as P2P.
Usage guidelines
If a router on a broadcast network does not support multicast, configure the network type for the
connected interfaces as NBMA.
If any two routers on an NBMA network are directly connected via a virtual link—the network is fully
meshed, you can configure the network type for the connected interfaces as NBMA. If two routers are not