Huawei Quidway NetEngine80E Configuration Manual page 295

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Issue 02 (2014-09-30)
– Run the ospf router-id router-id command to reconfigure a router ID.
– Run the undo ospf router-id auto-recover disable command to enable the
router ID automatic recovery function. After the function is enabled, the system
automatically allocates a new router ID.
NOTE
l If the automatic recovery function is enabled and a router ID conflict occurs between
indirectly connected routers in one OSPF area, the system replaces the conflicted router
ID with a newly calculated one. The automatic recovery function takes effect on both
configured and automatically generated router IDs.
l The system can replace a router ID in a maximum of three attempts in case the router
ID conflict persists.
If the router ID is changed, a new router ID will take affect after the reset ospf
[ process-id ]process command is run.
– The parameter vpn-instance vpn-instance-name specifies the name of a virtual
private network (VPN) instance.
If a VPN instance is specified, the OSPF process belongs to the specified VPN
instance. Otherwise, the OSPF process belongs to public network instances.
The description of an OSPF process helps identify special processes by the
description command.
3. Run:
area area-id
The OSPF area view is displayed.
The OSPF areas can be classified into a backbone area with the area ID of 0 and non-
backbone areas. The backbone area is responsible for forwarding inter-area routing
information. The routing information between the non-backbone areas must be
forwarded through the backbone area.
The description of an OSPF area helps identify special processes by the description
command.
4. Run:
network ip-address wildcard-mask [ description text ]
The network segments are configured to belong to the area. description is used to
configure a description for the specified OSPF network segment.
OSPF can run on an interface properly only when the following conditions are met:
– The mask length of the IP address of an interface is greater than or equal to that
specified by the network command.
NOTE
When the wildcard-mask parameter in the network command is specified as 0, if the IP
address of the interface and the IP address that is configured by the network address
command are the same, OSPF is enabled on the interface.
– The primary IP address of an interface is on the network segment specified by the
network command.
By default, OSPF uses a 32-bit host route to advertise the IP address of a loopback
interface. To advertise routes to the network segment of the loopback interface,
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5 OSPF Configuration
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