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ip-prefix — The destination address of the aggregate route in dotted decimal notation.
Parameters
summary-only — This optional parameter suppresses advertisement of more specific component
as-set — This optional parameter is only applicable to BGP and creates an aggregate where the path
aggregator as-number:ip-address — This optional parameter specifies the BGP aggregator path
community comm-id — This configuration option associates a BGP community with the aggregate
black-hole — This optional parameter installs the aggregate route, when activated, in the FIB with a
indirect ip-address — This configuration option specifies that the aggregate route should be installed
ipv4-prefix a.b.c.d
autonomous-system
Syntax
autonomous-system autonomous-system
no autonomous-system
config>router
Context
This command configures the autonomous system (AS) number for the router. A router can only
Description
belong to one AS. An AS number is a globally unique number with an AS. This number is used to
exchange exterior routing information with neighboring ASs and as an identifier of the AS itself.
If the AS number is changed on a router with an active BGP instance, the new AS number is not used
until the BGP instance is restarted either by administratively disabling/enabling (shutdown/
no shutdown) the BGP instance or rebooting the system with the new configuration.
7450 ESS OS Router Configuration Guide
ipv4-prefix
Values
ipv4-prefix-length
The mask associated with the network address expressed as a mask length.
0 — 32
Values
routes for the aggregate.
To remove the summary-only option, enter the same aggregate command without the
summary-only parameter.
advertised for this route will be an AS_SET consisting of all elements contained in all paths that
are being summarized. Use this feature carefully as it can increase the amount of route churn due
to best path changes.
attribute to the aggregate route. When configuring the aggregator, a two-octet AS number used to
form the aggregate route must be entered, followed by the IP address of the BGP system that
created the aggregate route.
route. The community can be matched in route policies and is automatically added to BGP routes
exported from the aggregate route.
comm-id
Values
asn
comm-val
well-known-comm
black-hole next-hop; where packets matching this route are discarded.
in the FIB with a next-hop taken from the route used to forward packets to ip-address.
a.b.c.d (host bits must be 0)
0 — 32
asn:comm-val | well-known-comm
0 — 65535
0 — 65535
no-advertise, no-export, no-export-subconfed
IP Router Configuration
Page 99
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