网络工程 - 关于 as-path-access-list - 吾爱随笔录

在给定的路由器上，我的目标是配置 as-path-access-list，使其不接受任何源自 AS 1 的前缀。以下是命令输出：

Coarse#sho ip bgp
BGP table version is 7, local router ID is 44.44.44.44
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 1.1.1.0/24       192.168.34.3                           0 3 2 1 i
*> 3.3.3.0/24       192.168.34.3             0             0 3 i
*> 4.4.4.0/24       0.0.0.0                  0         32768 i
*> 11.11.11.0/24    192.168.34.3                           0 3 2 1 i
*> 33.33.33.0/24    192.168.34.3             0             0 3 i
*> 44.44.44.0/24    0.0.0.0                  0         32768 i

现在我需要匹配源自 AS 1 的所有前缀，

Coarse#sho ip bgp regexp 1$
BGP table version is 7, local router ID is 44.44.44.44
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 1.1.1.0/24       192.168.34.3                           0 3 2 1 i
*> 11.11.11.0/24    192.168.34.3                           0 3 2 1 i

将此配置为路径访问列表

Coarse#sho ip as-path-access-list 1
AS path access list 1
    deny 1$

Coarse#sho run | sec router bgp
router bgp 4
 no synchronization
 bgp log-neighbor-changes
 network 4.4.4.0 mask 255.255.255.0
 network 44.44.44.0 mask 255.255.255.0
 neighbor 192.168.14.1 remote-as 1
 neighbor 192.168.14.1 filter-list 1 in
 neighbor 192.168.34.3 remote-as 3
 no auto-summary
Coarse#

但我仍然看到，这些前缀（源自 AS 1）存在于 BGP 表中

Coarse#sho ip bgp
BGP table version is 7, local router ID is 44.44.44.44
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 1.1.1.0/24       192.168.34.3                           0 3 2 1 i
*> 3.3.3.0/24       192.168.34.3             0             0 3 i
*> 4.4.4.0/24       0.0.0.0                  0         32768 i
*> 11.11.11.0/24    192.168.34.3                           0 3 2 1 i
*> 33.33.33.0/24    192.168.34.3             0             0 3 i
*> 44.44.44.0/24    0.0.0.0                  0         32768 i

你能指导我哪里出错了吗？