知识点
1、ip prefix-list默认是拒绝的，即不满足条件的路由拒绝
ip ip-prefix test index 10 permit 192.168.0.0 16 greater-equal 24 less-equal 28
//上述规则ip地址范围：10.0.x.x 24<=掩码长度<=28
//语法结构：ip ip-prefix 名字 序号 模式 网络号 掩码 greater-equal {num1} less-equal {num2} ；num2=>num1
2、ip-prefix List
1）精确匹配网络号和前缀长度
2）性能和可控性比ACL更高
3）前缀列表不能用于数据包的过滤（ACL可以直接调用在接口实现过滤）
业务
1、防止192.168.4.0/30通过注入ospf 路由表
配置内容
R1:
<r1>display current-configuration
[V200R003C00]
#
sysname r1
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load portalpage.zip
#
drop illegal-mac alarm
#
set cpu-usage threshold 80 restore 75
#
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$
local-user admin service-type http
#
firewall zone Local
priority 15
#
interface GigabitEthernet0/0/0
ip address 10.1.1.1 255.255.255.0
#
interface GigabitEthernet0/0/1
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 1.1.1.1 255.255.255.255
#
interface LoopBack1
ip address 192.168.1.1 255.255.255.0
#
interface LoopBack2
ip address 192.168.2.1 255.255.255.192
#
interface LoopBack3
ip address 192.168.3.1 255.255.255.240
#
interface LoopBack4
ip address 192.168.4.1 255.255.255.252
#
ospf 100 router-id 1.1.1.1
import-route direct route-policy policy01
area 0.0.0.0
network 10.1.1.0 0.0.0.255
#
route-policy policy01 permit node 10
if-match ip-prefix 1
#
ip ip-prefix 1 index 10 permit 192.168.0.0 16 greater-equal 24 less-equal 28
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
<r1>
R2:
<r2>display current-configuration
[V200R003C00]
#
sysname r2
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load portalpage.zip
#
drop illegal-mac alarm
#
set cpu-usage threshold 80 restore 75
#
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$
local-user admin service-type http
#
firewall zone Local
priority 15
#
interface GigabitEthernet0/0/0
ip address 10.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 2.2.2.2 255.255.255.255
#
ospf 100 router-id 2.2.2.2
area 0.0.0.0
network 10.1.1.0 0.0.0.255
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
<r2>