3com MSR 20-20 참조 매뉴얼

tag tag: Specifies a tag value for the summary route, used by a route policy to 
control route advertisement, in the range 0 to 4294967295. The value defaults to 
1.

cost cost: Specifies the cost of the summary route, in the range 1 to 16777214. 
For Type-1 external routes, the cost defaults to the biggest cost among routes that 
are summarized. For Type-2 external routes, the cost defaults to the value of the 
biggest cost among routes that are summarized plus 1.

Use the asbr-summary command to configure a summary route.

Use the undo asbr-summary command to remove a summary route.

No route summarization is configured by default.

With the asbr-summary command configured on an ASBR, it summarizes 
redistributed routes that fall into the specified address range with a single route. If 
the ASBR resides in an NSSA area, it advertises the summary route in a Type-7 LSA 
into the area.

With the asbr-summary command configured on an NSSA ABR, it summarizes 
routes in Type-5 LSAs translated from Type-7 LSAs with a single route and 
advertises the summary route to other areas. This command does not take effect 
on non NSSA ABRs.

With the undo asbr-summary command used, summarized routes will be 
advertised.

display ospf asbr-summary.

# Summarize redistributed routes with a single route.

<Sysname> system-view

[Sysname] ip route-static 10.2.1.0 24 null 0

[Sysname] ip route-static 10.2.2.0 24 null 0

[Sysname] ospf 100

[Sysname-ospf-100] import-route static

[Sysname-ospf-100] asbr-summary 10.2.0.0 255.255.0.0 tag 2 cost 100 

authentication-mode { simple | md5 }

OSPF area view

simple: Specifies the simple authentication mode.

md5: Specifies the MD5 ciphertext authentication mode.