2023年全国职业院校技能竞赛网络系统管理数通BGP-MPLS部分解题方法
题目
8.R2、S1、S2间部署IBGP，AS号为100；定义R2为路由反射器RR，使用Loopback 0接口建立BGP邻居关系。
9.北京综合服务中心局域网间通过MPLS xxx技术实现各业务安全隔离。R2、S1、S2开启MPLS报文转发及LDP标签转发协议。
10.生产VRF名称为SC，RD值为100:1、RT值自定义；办公VRF名称为BG，RD值为100:2、RT值自定义；管理VRF名称为GL，RD值为100:3、RT值自定义。
11.通过MPLS VPN技术实现同VPN终端间互访，生产与办公不同xxx间禁止互访，管理xxx可与生产及办公xxx互通。北京综合服务中心办公xxx终端用户可访问互联网。
解题思路：
1.按照要求先部署ospf实现R2、S1、S2间的Loopback 0可达
2.创建生产、办公、管理VRF实例，按照要求实现VRF间互访需求
3.部署mpls，接口开启标签功能和mpls功能
解题操作
R2设备
mpls ip
mpls router ldp
ldp router-id interface Loopback 0 force
!
ip vrf BG
rd 100:2
route-target both 100:2
route-target import 100:3 //和GL互通
!
ip vrf GL
rd 100:3
route-target both 100:3
route-target import 100:2 //和BG、SC互通
route-target import 100:1
!
ip vrf SC
rd 100:1
route-target both 100:1
route-target import 100:3 //和GL互通
interface GigabitEthernet 0/1
label-switching
mpls ip
interface GigabitEthernet 0/2
label-switching
mpls ip
router ospf 10
router-id 10.0.0.22
network 10.0.0.22 0.0.0.0 area 0
network 10.1.0.0 0.0.0.3 area 0
network 10.2.0.0 0.0.0.3 area 0
router bgp 100
no bgp default ipv4-unicast
bgp log-neighbor-changes
no bgp default route-target filter
neighbor 10.0.0.1 remote-as 100
neighbor 10.0.0.1 update-source Loopback 0
neighbor 10.0.0.2 remote-as 100
neighbor 10.0.0.2 update-source Loopback 0
!
address-family v4 unicast
neighbor 10.0.0.1 activate
neighbor 10.0.0.1 route-reflector-client
neighbor 10.0.0.1 next-hop-self
neighbor 10.0.0.1 send-community extended
neighbor 10.0.0.2 activate
neighbor 10.0.0.2 route-reflector-client
neighbor 10.0.0.2 next-hop-self
neighbor 10.0.0.2 send-community extendedS1设备
mpls ip
mpls router ldp
ldp router-id interface Loopback 0 force
ip vrf BG
rd 100:2
route-target both 100:2
!
ip vrf GL
rd 100:3
route-target both 100:3
!
ip vrf SC
rd 100:1
route-target both 100:1
interface GigabitEthernet 0/24
no switchport
ip address 10.1.0.1 255.255.255.252
ipv6 address 2001:10:1::1/64
ipv6 enable
ip ospf network point-to-point
ipv6 ospf network point-to-point
ipv6 ospf 14 area 0
mpls ip
!
label-switching
interface Loopback 11
ip vrf forwarding SC
ip address 10.1.4.1 255.255.255.255
!
interface Loopback 12
ip vrf forwarding BG
ip address 10.1.4.2 255.255.255.255
!
interface Loopback 13
ip vrf forwarding GL
ip address 10.1.4.3 255.255.255.255
interface VLAN 11
ip vrf forwarding SC
ip address 10.1.1.1 255.255.255.252
ip ospf network point-to-point
!
interface VLAN 12
ip vrf forwarding BG
ip address 10.1.2.1 255.255.255.252
ip ospf network point-to-point
!
interface VLAN 13
ip vrf forwarding GL
ip address 10.1.3.1 255.255.255.252
ip ospf network point-to-point
router bgp 100
bgp router-id 10.0.0.1
bgp log-neighbor-changes
no bgp default route-target filter
bgp graceful-restart restart-time 120
bgp graceful-restart stalepath-time 360
bgp graceful-restart
neighbor 10.0.0.22 remote-as 100
neighbor 10.0.0.22 update-source Loopback 0
address-family ipv4
no neighbor 10.0.0.22 activate
exit-address-family
address-family v4 unicast
neighbor 10.0.0.22 activate
neighbor 10.0.0.22 send-community both
address-family ipv4 vrf BG
maximum-prefix 10000
redistribute ospf 12 match internal external
exit-address-family
!
address-family ipv4 vrf GL
maximum-prefix 10000
redistribute ospf 13 match internal external
exit-address-family
!
address-family ipv4 vrf SC
maximum-prefix 10000
redistribute ospf 11 match internal external
exit-address-family
router ospf 10
router-id 10.0.0.1
graceful-restart
area 0
network 10.0.0.1 0.0.0.0 area 0
network 10.1.0.1 0.0.0.0 area 0
!
router ospf 11 vrf SC
router-id 10.1.4.1
graceful-restart
redistribute bgp metric-type 1 subnets
network 10.1.1.0 0.0.0.3 area 0
network 10.1.4.1 0.0.0.0 area 0
!
router ospf 12 vrf BG
router-id 10.1.4.2
graceful-restart
redistribute bgp metric-type 1 subnets
network 10.1.2.0 0.0.0.3 area 0
network 10.1.4.2 0.0.0.0 area 0
default-information originate always
!
router ospf 13 vrf GL
router-id 10.1.4.3
graceful-restart
redistribute bgp metric-type 1 subnets
network 10.1.3.0 0.0.0.3 area 0
network 10.1.4.3 0.0.0.0 area 0S2设备
mpls ip
mpls router ldp
ldp router-id interface Loopback 0 force
ip vrf BG
rd 100:2
route-target both 100:2
!
ip vrf GL
rd 100:3
route-target both 100:3
!
ip vrf SC
rd 100:1
route-target both 100:1
interface GigabitEthernet 0/24
no switchport
ip address 10.2.0.1 255.255.255.252
ipv6 address 2001:10:2::1/64
ipv6 enable
ip ospf network point-to-point
ipv6 ospf network point-to-point
ipv6 ospf 14 area 0
mpls ip
!
label-switching
interface Loopback 0
ip address 10.0.0.2 255.255.255.255
!
interface Loopback 11
ip vrf forwarding SC
ip address 10.2.4.1 255.255.255.255
!
interface Loopback 12
ip vrf forwarding BG
ip address 10.2.4.2 255.255.255.255
!
interface Loopback 13
ip vrf forwarding GL
ip address 10.2.4.3 255.255.255.255
interface VLAN 11
ip vrf forwarding SC
ip address 10.2.1.1 255.255.255.252
ip ospf network point-to-point
!
interface VLAN 12
ip vrf forwarding BG
ip address 10.2.2.1 255.255.255.252
ip ospf network point-to-point
!
interface VLAN 13
ip vrf forwarding GL
ip address 10.2.3.1 255.255.255.252
ip ospf network point-to-point
router bgp 100
bgp log-neighbor-changes
no bgp default route-target filter
bgp graceful-restart restart-time 120
bgp graceful-restart stalepath-time 360
bgp graceful-restart
neighbor 10.0.0.22 remote-as 100
neighbor 10.0.0.22 update-source Loopback 0
address-family ipv4
no neighbor 10.0.0.22 activate
exit-address-family
address-family v4 unicast
neighbor 10.0.0.22 activate
neighbor 10.0.0.22 send-community extended
exit-address-family
!
address-family ipv4 vrf BG
maximum-prefix 10000
redistribute ospf 12 match internal external
exit-address-family
!
address-family ipv4 vrf GL
maximum-prefix 10000
redistribute ospf 13 match internal external
exit-address-family
!
address-family ipv4 vrf SC
maximum-prefix 10000
redistribute ospf 11 match internal external
exit-address-family
router ospf 10
router-id 10.0.0.2
graceful-restart
area 0
network 10.0.0.2 0.0.0.0 area 0
network 10.2.0.1 0.0.0.0 area 0
!
router ospf 11 vrf SC
router-id 10.2.4.1
graceful-restart
redistribute bgp metric-type 1 subnets
network 10.2.1.0 0.0.0.3 area 0
network 10.2.4.1 0.0.0.0 area 0
!
router ospf 12 vrf BG
router-id 10.2.4.2
graceful-restart
redistribute bgp metric-type 1 subnets
network 10.2.2.0 0.0.0.3 area 0
network 10.2.4.2 0.0.0.0 area 0
!
router ospf 13 vrf GL
router-id 10.2.4.3
graceful-restart
redistribute bgp metric-type 1 subnets
network 10.2.3.0 0.0.0.3 area 0
network 10.2.4.3 0.0.0.0 area 0S3的ospf配置
router ospf 11
router-id 10.1.4.4
graceful-restart
passive-interface VLAN 10
network 10.1.1.0 0.0.0.3 area 0
network 10.1.4.4 0.0.0.0 area 0
network 10.1.10.0 0.0.0.255 area 0
!
router ospf 12
router-id 10.1.4.5
graceful-restart
passive-interface VLAN 20
network 10.1.2.0 0.0.0.3 area 0
network 10.1.4.5 0.0.0.0 area 0
network 10.1.20.0 0.0.0.255 area 0
!
router ospf 13
router-id 10.1.4.6
graceful-restart
passive-interface VLAN 30
network 10.1.3.0 0.0.0.3 area 0
network 10.1.4.6 0.0.0.0 area 0
network 10.1.30.0 0.0.0.255 area 0S4的ospf配置
router ospf 11
router-id 10.2.4.4
graceful-restart
passive-interface VLAN 10
network 10.2.1.0 0.0.0.3 area 0
network 10.2.4.4 0.0.0.0 area 0
network 10.2.10.0 0.0.0.255 area 0
!
router ospf 12
router-id 10.2.4.5
graceful-restart
passive-interface VLAN 20
network 10.2.2.0 0.0.0.3 area 0
network 10.2.4.5 0.0.0.0 area 0
network 10.2.20.0 0.0.0.255 area 0
!
router ospf 13
router-id 10.2.4.6
graceful-restart
passive-interface VLAN 30
network 10.2.3.0 0.0.0.3 area 0
network 10.2.4.6 0.0.0.0 area 0
network 10.2.30.0 0.0.0.255 area 0测试，R2查看BG的路由表，已经出现了
