H3C S9500 Series Command Manual page 5

Command Manual – BGP
H3C S9500 Series Routing Switches
Table 1-1
Table 1-1 Functions of the keywords
Keywords
as-set
detail-suppressed
suppress-policy
origin-policy
attribute-policy
Description
Use the aggregate command to create a summary route in the BGP routing table.
Use the undo aggregate command to remove a summary route.
By default, no summary route is configured.
Note:
The suppress-policy keyword takes priority over the keyword detail-suppressed.
Examples
# In BGP view, create a summary of 192.213.0.0/16 in the BGP routing table.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] aggregate 192.213.0.0 255.255.0.0
# In BGP-VPN instance view, create a summary of 192.213.0.0/16 in BGP routing table
(the VPN has been created).
describes the functions of the above-mentioned keywords.
Used to create a summary route, whose AS path contains
the AS path information of summarized routes. Use this
keyword carefully when many AS paths need to be
summarized, because the frequent changes of routes may
lead to route oscillation.
This keyword does not suppress the summary route, but it
suppresses the advertisement of all the more specific routes.
To summarize only some specific routes, use the peer
filter-policy command.
Used to create a summary route and suppress the
advertisement of some summarized routes. If you want to
suppress some routes selectively and leave other routes still
advertised, use the if-match clause of the route-policy
command.
Selects only routes satisfying the routing policy for route
summarization
Sets attributes except the AS-PATH attribute for the
summary route. The same work can be done by using the
peer route-policy command.
Chapter 1 BGP Configuration Commands
Function
1-2