Huawei Quidway S8500 Series, Руководство по управлению

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Command Manual – Routing Protocol
Quidway S8500 Series Routing Switches
Chapter 3 OSPF Configuration Commands
Huawei Technologies Proprietary
3-43
OSPF divides networks into four types by link layer protocol:
z
Broadcast: If Ethernet or FDDI is adopted, OSPF defaults the network type to
broadcast.
z
Non-Broadcast Muli-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 .
Change the interface type to NBMA if the router does not support multicast addresses
on the broadcast network. You can also change the interface type NBMA to broadcast.
A non-broadcast network with the multi-access capability is considered an NBMA
network only when it is fully meshed, meaning any two routers on it have a direct virtual
circuit between them. If the network is not fully meshed, you must change the network
type of the interface connected to it to p2mp . This allows two routers that are not
directly reachable to exchange routing information through a router that is directly
reachable for both of them.
Change the interface type to p2p if the router has only one peer on the NBMA network.
Note: When the network type of an interface is NBMA or it is changed to NBMA
manually, the peer command must be used to configure the neighboring point.
Related command: ospf dr-priority .
Example
# Set the interface Vlan-interface 10 to NBMA type.
[Quidway] interface Vlan-interface 10
[Quidway-Vlan-interface10] ospf network-type nbma
3.1.43 ospf timer dead
Syntax
ospf timer dead { seconds | minimal multi-hello packets }
undo ospf timer dead [ minimal multi-hello ]
View
Interface view
Parameter
seconds: Dead interval of the OSPF neighbor. It is in seconds and ranges from 1 to
65,535.