BGP - Part 2

If you are going to use "clear ip bgp x.x.x.x soft in / out" you must enable the ability first.

Router BGP 1
neighbor x.x.x.x soft-reconfiguration in

Route-Filtering 101

access-list 1 deny 3.3.3.0 0.0.0.255
access-list 1 permit any

Router bgp 1
neighbor x.x.x.x distribute-list 1 in
(Note: If you have more than (1) BGP neighbor that you can learn this prefix from, then you need to add it to all neighbors.
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ip prefix-list oscar deny 3.3.3.0/24
ip prefix-list oscar permit 0.0.0.0/0 le 32


Router bgp 1
neighbor x.x.x.x prefix-list oscar in
(Note: If you have more than (1) BGP neighbor that you can learn this prefix from, then you need to add it to all neighbors.
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access-list 1 deny 3.3.3.0 0.0.0.255
access-list 1 permit any

Route-map oscar permit 10
match ip address 1
Route-map oscar permit 20

Router bgp 1
neighbor x.x.x.x route-map oscar in
(Note: If you have more than (1) BGP neighbor that you can learn this prefix from, then you need to add it to all neighbors.)

You can also use a DENY route-map and a PERMIT route-map instead.
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Filtering route's by telling the eBGP neighbor to not send them in the first place.

Router BGP 1
 address-family ipv4
 neighbor 10.1.23.2 capability orf prefix-list both

ip prefix-list oscar deny 3.3.3.0/24
ip prefix-list oscar permit 0.0.0.0/0 le 32

(Note: If you have more than (1) BGP neighbor that you can learn this prefix from, then you need to add it to all neighbors.)
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