要求
1 使用PreVal策略,确保R4通过R2到达192.168.10.0/24
2 使用AS_Path策略,确保R4通过R3到达192.168.11.0/24
3 配置MED策略,确保R4通过R3到达192.168.12.0/24
4 使用Local Preference策略,确保R1通过R2到达192.168.1.0/24
5 使用Local Preference策略,确保R1通过R3到达192.168.2.0/24
6 配置负载均衡,确保R1通过R2和R3到达192.168.3.0/24
7 使用AS策略,AS 500不接受任何始发于AS 123的路由
8 使用自定义Community策略,确保192.168.3.0/24路由不会被发布到AS 500
9 IBGP 使用环回接口建邻,EBGP使用物理接口建邻
10 修改AS 123中的用户网段为Broadcast,方便后续在BGP中宣告
11 BGP宣告路由时,仅宣告24 网段的用户路由
R1
[V200R003C00]
#
sysname R1
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load flash:/portalpage.zip
#
drop illegal-mac alarm
#
wlan ac-global carrier id other ac id 0
#
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 12.0.0.1 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 13.0.0.1 255.255.255.0
#
interface GigabitEthernet0/0/2
ip address 15.0.0.1 255.255.255.0
#
interface NULL0
#
interface LoopBack0
ip address 1.1.1.1 255.255.255.255
#
interface LoopBack1
ip address 192.168.100.1 255.255.255.0
#
bgp 123
peer 2.2.2.2 as-number 123
peer 2.2.2.2 connect-interface LoopBack0
peer 3.3.3.3 as-number 123
peer 3.3.3.3 connect-interface LoopBack0
peer 15.0.0.5 as-number 500
#
ipv4-family unicast
undo synchronization
network 192.168.20.0
network 192.168.30.0
network 192.168.100.0
maximum load-balancing 2
peer 2.2.2.2 enable
peer 2.2.2.2 route-policy aa import
peer 2.2.2.2 next-hop-local
peer 3.3.3.3 enable
peer 3.3.3.3 route-policy bb import
peer 3.3.3.3 next-hop-local
peer 15.0.0.5 enable
peer 15.0.0.5 route-policy com export
#
ospf 1 router-id 1.1.1.1
area 0.0.0.0
network 1.1.1.0 0.0.0.255
network 12.0.0.0 0.0.0.255
network 13.0.0.0 0.0.0.255
network 192.168.100.0 0.0.0.255
#
route-policy aa permit node 10
if-match ip-prefix LP
apply local-preference 200
#
route-policy aa permit node 20
#
route-policy bb permit node 10
if-match ip-prefix LP2
apply local-preference 200
#
route-policy bb permit node 20
#
route-policy com deny node 10
if-match community-filter 1
#
route-policy com permit node 20
#
ip ip-prefix LP index 10 permit 192.168.1.0 24
ip ip-prefix LP2 index 10 permit 192.168.2.0 24
#
ip community-filter 1 permit 400:500
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
R2
[V200R003C00]
#
sysname R2
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load flash:/portalpage.zip
#
drop illegal-mac alarm
#
wlan ac-global carrier id other ac id 0
#
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 24.0.0.2 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 12.0.0.2 255.255.255.0
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 2.2.2.2 255.255.255.255
#
interface LoopBack1
ip address 192.168.20.1 255.255.255.0
#
bgp 123
router-id 2.2.2.2
peer 1.1.1.1 as-number 123
peer 1.1.1.1 connect-interface LoopBack0
peer 24.0.0.4 as-number 400
#
ipv4-family unicast
undo synchronization
network 192.168.20.0
network 192.168.30.0
network 192.168.100.0
peer 1.1.1.1 enable
peer 1.1.1.1 next-hop-local
peer 1.1.1.1 advertise-community
peer 24.0.0.4 enable
#
ospf 1 router-id 2.2.2.2
area 0.0.0.0
network 2.2.2.2 0.0.0.0
network 12.0.0.0 0.0.0.255
network 192.168.20.0 0.0.0.255
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
R3
[V200R003C00]
#
sysname R3
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load flash:/portalpage.zip
#
drop illegal-mac alarm
#
wlan ac-global carrier id other ac id 0
#
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 34.0.0.3 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 13.0.0.3 255.255.255.0
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 3.3.3.3 255.255.255.255
#
interface LoopBack1
ip address 192.168.30.1 255.255.255.0
#
bgp 123
router-id 3.3.3.3
peer 1.1.1.1 as-number 123
peer 1.1.1.1 connect-interface LoopBack0
peer 34.0.0.4 as-number 400
#
ipv4-family unicast
undo synchronization
network 192.168.20.0
network 192.168.30.0
network 192.168.100.0
peer 1.1.1.1 enable
peer 1.1.1.1 next-hop-local
peer 1.1.1.1 advertise-community
peer 34.0.0.4 enable
#
ospf 1 router-id 3.3.3.3
area 0.0.0.0
network 3.3.3.3 0.0.0.0
network 13.0.0.0 0.0.0.255
network 192.168.30.0 0.0.0.255
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
R4
[V200R003C00]
#
sysname R4
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load flash:/portalpage.zip
#
drop illegal-mac alarm
#
wlan ac-global carrier id other ac id 0
#
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 24.0.0.4 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 34.0.0.4 255.255.255.0
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 192.168.1.1 255.255.255.0
#
interface LoopBack1
ip address 192.168.2.1 255.255.255.0
#
interface LoopBack2
ip address 192.168.3.1 255.255.255.0
#
bgp 400
router-id 4.4.4.4
peer 24.0.0.2 as-number 123
peer 34.0.0.3 as-number 123
#
ipv4-family unicast
undo synchronization
network 192.168.1.0
network 192.168.2.0
network 192.168.3.0 route-policy com
peer 24.0.0.2 enable
peer 24.0.0.2 route-policy aa import
peer 24.0.0.2 advertise-community
peer 34.0.0.3 enable
peer 34.0.0.3 route-policy bb import
peer 34.0.0.3 advertise-community
#
route-policy aa permit node 10
if-match ip-prefix aa
apply preferred-value 1000
#
route-policy aa permit node 15
if-match ip-prefix bb
apply as-path 123 123 500 500 overwrite
#
route-policy aa permit node 16
if-match ip-prefix MED
apply cost 500
#
route-policy aa permit node 20
#
route-policy bb permit node 10
if-match ip-prefix MED
apply cost 200
#
route-policy bb permit node 20
#
route-policy com permit node 10
apply community 400:500
#
ip ip-prefix aa index 10 permit 192.168.10.0 24
ip ip-prefix bb index 10 permit 192.168.11.0 24
ip ip-prefix MED index 10 permit 192.168.12.0 24
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
R5
[V200R003C00]
#
sysname R5
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load flash:/portalpage.zip
#
drop illegal-mac alarm
#
wlan ac-global carrier id other ac id 0
#
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 15.0.0.5 255.255.255.0
#
interface GigabitEthernet0/0/1
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 192.168.10.1 255.255.255.0
#
interface LoopBack1
ip address 192.168.11.1 255.255.255.0
#
interface LoopBack2
ip address 192.168.12.1 255.255.255.0
#
bgp 500
peer 15.0.0.1 as-number 123
#
ipv4-family unicast
undo synchronization
network 192.168.10.0
network 192.168.11.0
network 192.168.12.0
peer 15.0.0.1 enable
peer 15.0.0.1 as-path-filter 1 import
#
ip as-path-filter 1 deny ^123$
ip as-path-filter 1 permit .*
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return