Cisco Catalyst 9500 Series - Page 144

Procedure
PurposeCommand or Action
Enters the global configuration mode.configure terminal
Example:
Device# configure terminal
Step 1
Defines a BGP-related access list.
ip as-path access-list access-list-number {permit |
deny} as-regular-expressions
Step 2
Example:
Device(config)# ip as-path access-list 1 deny
_65535_
Enters BGP router configuration
mode.
router bgp autonomous-system
Example:
Device(config)# router bgp 110
Step 3
Establishes a BGP filter based on an
access list.
neighbor {ip-address | peer-group name} filter-list
{access-list-number | name} {in | out | weight weight}
Example:
Device(config-router)# neighbor 172.16.1.1
filter-list 1 out
Step 4
Returns to privileged EXEC mode.end
Example:
Device(config)# end
Step 5
Verifies the configuration.
show ip bgp neighbors [paths regular-expression]
Example:
Device# show ip bgp neighbors
Step 6
(Optional) Saves your entries in the
configuration file.
copy running-config startup-config
Example:
Device# copy running-config startup-config
Step 7
Routing Configuration Guide, Cisco IOS XE Everest 16.6.x (Catalyst 9500 Switches)
134
Configuring IP Unicast Routing
Configuring BGP Filtering by Access Lists and Neighbors