5000 Series Layer 2/3 Managed Data Center Switch CLI Reference Guide
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Command Mode
BGP Router Config
11-33 filter-list (BGP Router Config)
This command filters advertisements to or from a specific neighbor according to the advertisements AS-
PATH. Only a single AS-PATH list can be configured in each direction for each neighbor. If you invoke
the command a second time for a given neighbor, the new AS-PATH list number replaces the previous
AS-PATH list number.
If you assign a neighbor filter list to a nonexistent AS-PATH access list, all routes are filtered. Issue this
command in Address Family Configuration Mode to add it to a peer template.
Use the
no
command to unconfigure neighbor filter lists.
filter-list as-path-list-number {in | out}
no filter-list as-path-list-number {in | out}
Parameters
as-path-list-number
Identifies an AS-PATH list.
in
The AS-PATH list is applied to advertisements received from the
neighbor.
out
The AS-PATH list is applied to advertisements to be sent to the
neighbor.
Default
The default is as follows: neighbor filter lists are not defined.
Command Mode
BGP Router Config
11-34 filter-list (IPv6 Address Family Config)
This command filters BGP to apply an AS-PATH access list to UPDATE messages received from or sent
to a specific neighbor. Filtering for IPv6 is independent of filtering configured for IPv4. lf an UPDATE
message includes both lPv4 and IPv6 NLRI, it could be filtered for lPv4 but accepted for IPv6 or vice
versa.
If you assign a neighbor filter list to a nonexistent AS-PATH access list, all routes are filtered.
Issue this command in Address Family Configuration Mode to add it to a peer template.
Use the
no
command to unconfigure neighbor IPv6 filter lists.
filter-list as-path-list-number {in | out}
no filter-list as-path-list-number {in | out}
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