1、网络拓扑图
2、重点注意
1）本地优先级属性
2）默认值100
3）以大为优
4）路由优选
5）公认任意
3、配置
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
ip address 20.1.1.1 255.255.255.0
#
interface GigabitEthernet0/0/2
ip address 30.1.1.1 255.255.255.0
#
interface NULL0
#
interface LoopBack0
ip address 1.1.1.1 255.255.255.255
#
bgp 100
router-id 1.1.1.1
peer 2.2.2.2 as-number 100
peer 2.2.2.2 connect-interface LoopBack0
peer 3.3.3.3 as-number 100
peer 3.3.3.3 connect-interface LoopBack0
#
ipv4-family unicast
undo synchronization
network 10.1.1.0 255.255.255.0
peer 2.2.2.2 enable
peer 2.2.2.2 reflect-client
peer 3.3.3.3 enable
peer 3.3.3.3 reflect-client
#
ospf 100 router-id 1.1.1.1
area 0.0.0.0
network 1.1.1.1 0.0.0.0
network 10.1.1.0 0.0.0.255
network 20.1.1.0 0.0.0.255
network 30.1.1.0 0.0.0.255
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
<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 20.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 40.1.1.1 255.255.255.0
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 2.2.2.2 255.255.255.255
#
bgp 100
router-id 2.2.2.2
peer 1.1.1.1 as-number 100
peer 1.1.1.1 connect-interface LoopBack0
peer 40.1.1.2 as-number 200
peer 40.1.1.2 connect-interface GigabitEthernet0/0/1
#
ipv4-family unicast
undo synchronization
peer 1.1.1.1 enable
peer 40.1.1.2 enable
#
ospf 100 router-id 2.2.2.2
area 0.0.0.0
network 2.2.2.2 0.0.0.0
network 20.1.1.0 0.0.0.255
network 40.1.1.0 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>
R3:
<r3>display current-configuration
[V200R003C00]
#
sysname r3
#
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 30.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 50.1.1.1 255.255.255.0
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 3.3.3.3 255.255.255.255
#
bgp 100
router-id 3.3.3.3
peer 1.1.1.1 as-number 100
peer 1.1.1.1 connect-interface LoopBack0
peer 50.1.1.2 as-number 200
peer 50.1.1.2 connect-interface GigabitEthernet0/0/1
#
ipv4-family unicast
undo synchronization
peer 1.1.1.1 enable
peer 50.1.1.2 enable
#
ospf 100 router-id 3.3.3.3
area 0.0.0.0
network 3.3.3.3 0.0.0.0
network 30.1.1.0 0.0.0.255
network 50.1.1.0 0.0.0.255
#
route-policy p1 permit node 10
if-match ip-prefix ip-prefix1
apply local-preference 101
#
ip ip-prefix ip-prefix1 index 10 permit 10.1.1.0 24 greater-equal 24 less-equal
24
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
<r3>
R4:
<r4>display current-configuration
[V200R003C00]
#
sysname r4
#
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 50.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 40.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/2
ip address 60.1.1.1 255.255.255.0
#
interface NULL0
#
bgp 200
router-id 4.4.4.4
peer 40.1.1.1 as-number 100
peer 40.1.1.1 connect-interface GigabitEthernet0/0/1
peer 50.1.1.1 as-number 100
peer 50.1.1.1 connect-interface GigabitEthernet0/0/0
#
ipv4-family unicast
undo synchronization
network 60.1.1.0 255.255.255.0
peer 40.1.1.1 enable
peer 40.1.1.1 route-policy p1 import
peer 50.1.1.1 enable
peer 50.1.1.1 route-policy p2 import
#
route-policy p1 permit node 10
if-match ip-prefix l1
apply local-preference 100
#
route-policy p2 permit node 10
if-match ip-prefix l1
apply local-preference 101
#
ip ip-prefix l1 index 10 permit 10.1.1.0 24 greater-equal 24 less-equal 24
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
<r4>
4、结果
