H3C S7500E Series

Command Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches Chapter 3 OSPF Configuration Commands
3-3
3.1.3 asbr-summary
Syntax
asbr-summary ip-address { mask | mask-length } [ tag tag | not-advertise | cost
cost ]*
undo asbr-summary ip-address { mask | mask-length }
View
OSPF view
Parameters
ip-address: IP address of the summary route in dotted decimal notation.
mask: IP address mask in dotted decimal notation.
mask-length: Mask length, in the range 0 to 32 bits.
not-advertise: Disables advertising the summary route. If the keyword is not specified,
the route is advertised.
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 default is 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 largest cost among routes that are
summarized. For Type-2 external routes, the cost defaults to the largest cost among
routes that are summarized plus 1.
Description
Use the asbr-summary command to configure a summary route.
Use the undo asbr-summary command to remove a summary route.
No ASBR 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
described by 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.
Related command: display ospf asbr-summary.