[R1-bgp]display bgp routing-table
Total Number of Routes: 4
BGP Local router ID is 1.1.1.1
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn
*> 1.1.1.1/32 0.0.0.0 0 0 i
*> 2.2.2.2/32 192.168.1.2 0 0 200i
*> 3.3.3.3/32 192.168.1.2 0 200i
*> 172.16.1.1/32 192.168.1.2 0 200i
[R1]bgp 100
[R1-bgp]filter-policy ip-prefix 1 import
[R1]ip ip-prefix 1 index 10 deny 3.3.3.3 32
[R1]ip ip-prefix 1 此处还要一个命令，相当与允许所有。下面有！！
[R1]display bgp routing-table
Total Number of Routes: 1
BGP Local router ID is 1.1.1.1
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn
*> 1.1.1.1/32 0.0.0.0 0 0 i
为什么只拒绝了3.3.3.3的，2.2.2.2和172.16.1.1的也被拒绝了呢？
下面两个命令是一样的！我用的上面的命令！
[R1]ip ip-prefix 1 permit 0.0.0.0 0 greater-equal 0 less-equal 32
[R1]ip ip-prefix 1 index 20 permit 0.0.0.0 0 greater-equal 0 less-equal 32