bgp相关配置：

router bgp 65518
 bgp router-id 204.0.0.18
 no bgp default ipv4-unicast
 bgp log-neighbor-changes
 neighbor 192.168.2.1 remote-as 65517
 !
 address-family ipv4
 neighbor 192.168.2.1 activate
 no auto-summary
 no synchronization
 bgp suppress-inactive
 bgp inject-map inject exist-map existmap copy-attributes
 network 204.0.11.0
 network 204.0.16.0
 network 204.0.32.0
 network 204.200.0.0 mask 255.255.0.0
 aggregate-address 204.0.0.0 255.0.0.0 summary-only
 exit-address-family

学习到的bgp以及本机路由：

     204.0.0.0/32 is subnetted, 1 subnets
C       204.0.0.18 is directly connected, Loopback0
C    204.0.16.0/24 is directly connected, Loopback16
C    204.0.32.0/24 is directly connected, Loopback32
C    204.0.11.0/24 is directly connected, Loopback11
B    192.168.16.0/24 [20/0] via 192.168.2.1, 00:11:09
     192.168.2.0/30 is subnetted, 1 subnets
C       192.168.2.0 is directly connected, Ethernet1/2
B*   0.0.0.0/0 [20/0] via 192.168.2.1, 00:11:39
C    204.200.0.0/16 is directly connected, Loopback200
S    204.0.0.0/8 is directly connected, Null0
B    203.0.0.0/8 [20/0] via 192.168.2.1, 00:11:39
B    192.168.0.0/16 [20/0] via 192.168.2.1, 00:11:09

route-map配置：

ip prefix-list exist19216816 seq 5 permit 192.168.16.0/24
!
ip prefix-list nexthop seq 5 permit 192.168.2.1/32

ip prefix-list permitenject seq 5 permit 204.0.11.0/24
ip prefix-list permitenject seq 10 permit 204.0.16.0/24

route-map existmap permit 10
 match ip address prefix-list exist19216816
 match ip route-source prefix-list nexthop

route-map inject permit 10
 set ip address prefix-list permitenject
 set community 65518:100 additive

对端邻居路由：

 

结果：

inject效果没有体现。

打开ip bgp update看不到这个inject的任何相关报文。

r18#  show ip prefix-list detail exist19216816
ip prefix-list exist19216816:
   count: 1, range entries: 0, sequences: 5 - 5, refcount: 2
   seq 5 permit 192.168.16.0/24 (hit count: 56, refcount: 1)
r18#  show ip prefix-list detail permitenject
ip prefix-list permitenject:
   count: 2, range entries: 0, sequences: 5 - 10, refcount: 3
   seq 5 permit 204.0.11.0/24 (hit count: 0, refcount: 2)
   seq 10 permit 204.0.16.0/24 (hit count: 0, refcount: 1)
显示permitenject匹配有点不正常。

 

不知何故？