Summary (Is-Is View) - H3C MSR 20-20 Command Reference Manual

summary (IS-IS view)

Syntax
View
Parameters
Description
Examples
<Sysname> system-view
[Sysname] isis
[Sysname-isis-1] spf-slice-size 1000
summary ip-address { mask | mask-length } [ avoid-feedback | generate_null0_route
| tag tag | [ level-1 | level-1-2 | level-2 ] ] *
undo summary ip-address { mask | mask-length } [ level-1 | level-1-2 | level-2 ]
IS-IS view
ip-address: Destination IP address of a summary route.
mask: Mask of the destination IP address, in dotted decimal format.
mask-length: Mask length, in the range of 0 to 32.
avoid-feedback: Specifies to avoid learning aggregate routes by routing
calculation.
generate_null0_route: Specifies to generate the Null 0 route to avoid routing
loops.
tag tag: Specifies a management tag, in the range of 1 to 4294967295.
level-1: Specifies to summarize only the routes redistributed to Level-1 area.
level-1-2: Specifies to summarize all the routes redistributed to the Level-1 and
Level-2 areas.
level-2: Specifies to summarize only the routes redistributed to the Level-2 area.
Use the command to configure a summary route.
summary
Use the undo summary
No summarization is configured by default.
If no level is specified, only the level-2 routes will be summarized by default.
You can summarize multiple contiguous networks with a summary network to
reduce the size of the routing table, as well as that of LSP and LSDB generated by
the router. It is allowed to summarize native IS-IS routes and redistributed routes.
After summarization, the cost of the summary route is the smallest cost of those
summarized routes.
Note that the router summarizes only routes in local LSPs.
# Configure a summary route 202.0.0.0/8.
command to remove a summary route.
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