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Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

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aggregate-address

Summarize a range of prefixes to minimize the number of entries in the routing table.

Syntax

aggregate-address ipv6-address prefix-mength [advertise-map map-name] [as-set] [attribute-map map-name] [summary-only] [suppress-map map-name]

Parameters

ipv6-address prefix-length	Enter the IPv6 address in the x:x:x:x::x format then the prefix length in the / x format. The range is from /0 to /128. NOTE: The :: notation specifies successive hexadecimal fields of zeros.
advertise-map map-name	(OPTIONAL) Enter the keywords `advertise-map` then the name of a configured route map to set filters for advertising an aggregate route.
as-set	(OPTIONAL) Enter the keywords `as-set` to generate path attribute information and include it in the aggregate. AS_SET includes AS_PATH and community information from the routes included in the aggregated route.
attribute-map map-name	(OPTIONAL) Enter the keywords `attribute-map` then the name of a configured route map to modify attributes of the aggregate, excluding AS_PATH and NEXT_HOP attributes.
summary-only	(OPTIONAL) Enter the keywords `summary-only` to advertise only the aggregate address. Specific routes are not advertised.
suppress-map map-name	(OPTIONAL) Enter the keywords `suppress-map` then the name of a configured route map to identify which more-specific routes in the aggregate are suppressed.

Defaults

Not configured.

Command Modes

ROUTER BGP ADDRESS FAMILY
ROUTER BGP ADDRESS FAMILY IPv6

Supported Modes

Full–Switch

Command History

Version	Description
9.9(0.0)	Introduced on the FN IOM.
9.2(0.0)	Introduced on the MXL 10/40GbE Switch IO Module.

Usage Information

At least one of the routes included in the aggregate address must be in the BGP routing table for the configured aggregate to become active.

Do not add the as-set parameter to the aggregate if routes within the aggregate are constantly changing as the aggregate will flap to keep track of the changes in the AS_PATH.

In route maps used in the suppress-map parameter, routes meeting the deny clause are not suppress; in other words, they are allowed. The opposite is true: routes meeting the permit clause are suppressed.

If the route is injected using the network command, that route still appears in the routing table if you configure the summary-only parameter in the aggregate-address command.

The summary-only parameter suppresses all advertisements. If you want to suppress advertisements to only specific neighbors, use the neighbor distribute-list command.

In the show ip bgp ipv6 unicast command, aggregates contain an ‘a’ in the first column and routes suppressed by the aggregate contain an ‘s’ in the first column.