BGP route filtering

[sivam siva]

Hi 

What if I configured Distribute-list, route-map, filter-list, prefix-list all together what is the preference order of BGP?

for Ex:

neighbor 2.2.2.2 prefix-list XXXX out

neighbor 2.2.2.2 distribute-list 101 out

neighbor 2.2.2.2 route-map XXXX  out

neighbor 2.2.2.2 filter-list XXXX out

Thanks

Siva

[Georg Pauwen · Accepted solution]

Hello,

check the table below, from the linked document:

Table 1 BGP Policy Processing Order

Inbound	Outbound
Route map	Distribute list
Filter list, AS-path access list, or IP policy	IP prefix list
IP prefix list	Filter list, AS-path access list, or IP policy
Distribute list	Route map

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-3se/3850/irg-xe-3se-3850-book/irg-prefix-filter.html

[paul driver · Accepted solution]

Hello
Memorize the following and you wont forget either egress or ingress bgp order of operations regards filtering-

Egress bgp filtering  -Dont Plan Fix Results
Distribute-list
Prefix-list
Filter-list
Route-maps

ingress bgp filtering  -  Reverse the above