Re: suppress-map vs advertise-map

Hi,

It seems it is very well explained on
http://www.cisco.com/en/US/docs/ios/iproute/command/reference/irp_bgp1.html#wp1011467

Using the* suppress-map *keyword creates the aggregate route but suppresses
advertisement of specified routes. You can use the *match* clauses of route
maps to selectively suppress some more-specific routes of the aggregate and
leave others unsuppressed. IP access lists and autonomous system path access
lists match clauses are supported.

Using the* advertise-map *keyword selects specific routes that will be used
to build different components of the aggregate route, such as AS_SET or
community. This form of the *aggregate-address *command is useful when the
components of an aggregate are in separate autonomous systems and you want
to create an aggregate with AS_SET, and advertise it back to some of the
same autonomous systems. You must remember to omit the specific autonomous
system numbers from the AS_SET to prevent the aggregate from being dropped
by the BGP loop detection mechanism at the receiving router. IP access lists
and autonomous system path access lists *match* clauses are supported.

-Kaushal

On Wed, Jun 24, 2009 at 10:13 PM, <moditw_at_gmail.co.za> wrote:

> Hi Group,
>
> I am failing to understand the different between BGP suppress-map and
> advertise-map subcommands. can someone explain to me the different.
>
> Thanks
> Modi
>
>
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Received on Mon Jun 29 2009 - 11:55:56 ART