3com MSR 20-20 참조 매뉴얼

C

HAPTER

 76: OSPF C

ONFIGURATION

 C

OMMANDS

OSPF area view

no-summary: Used only on a stub ABR. With it configured, the ABR advertises 
only a default route in a Summary LSA into the stub area (Such a stub area is 
known as a totally stub area).

Use the stub command to configure an area as a stub area.

Use the undo stub command to remove the configuration.

No area is a stub area by default.

To cancel the no-summary configuration on an ABR, use the stub command 
again to overwirte the previous configuration.

To configure an area as a stub area, all routers attached to it must be configured 
with this command.

default-cost (OSPF area view).

# Configure area1 as a stub area.

<Sysname> system-view

[Sysname] ospf 100

[Sysname-ospf-100] area 1

[Sysname-ospf-100-area-0.0.0.1] stub 

OSPF view

None

Use the stub-router command to configure the router as a stub router.

Use the undo stub-router command to restore the default.

By default, no router is configured as a stub router.

The router LSAs from the stub router may contain different link type values. A 
value of 3 means a link to the stub network, so the cost of the link remains 
unchanged. A value of 1, 2 or 4 means a point-to-point link, a link to a transit 
network or a virtual link; in such cases, a maximum cost value of 65535 is used. 
Thus, other neighbors find the links to the stub router have such big costs, they 
will not send packets to the stub router for forwarding as long as there is a route 
with a smaller cost.