無錫廣電ATM采用雙星型的拓撲結(jié)構(gòu),骨干交換速率為622Mbps。為了開通MPLS VPN,對骨干線路的速率進行了劃分:400Mbps用于專線聯(lián)網(wǎng),200Mbps用于IP業(yè)務(wù)。
BGP/MPLS VPN的實現(xiàn)
1.LSC的設(shè)置: LSCgd(廣電機房)配置…… interface XTagATM41 description to 機房1 ip address 10.10.4.17 255.255.255.252 no ip directed-broadcast no ip route-cache cef extended-port ATM1/0 bpx 4.1 tag-switching ip! router ospf 1 network 10.10.0.0 0.0.255.255 area 0 通過以上配置,每一個LSC通過OSPF協(xié)議,可以學習到PE路由器之間的路由,如: LSCgd#sh ip route include XTagATM41 O 10.10.5.5/32 [110/2] via 10.10.4.18, 00:08:42, XTagATM41 O 10.10.3.0/24 [110/2] via 10.10.4.18, 00:08:42, XTagATM41 O 10.10.3.16/30 [110/3] via 10.10.4.18, 00:08:42, XTagATM41 C 10.10.4.16/30 is directly connected, XTagATM41 O 10.10.5.69/32 [110/3] via 10.10.4.18, 00:08:42, XTagATM41 |
2.RPM的設(shè)置
RPMgd(機房1)設(shè)置 interface Loopback0 ip address 10.10.5.65 255.255.255.255 ;廣電中心的環(huán)回IP地址 ! ip vrf VPN1 ;定義運營商VPN rd 100:1 ;定義VPN號 route-target export 100:1 ;允許輸出路由交換的VPN號 route-target import 100:1 ;允許輸入路由交換的VPN號 ip cef! interface FastEthernet1/1.201 description to 江陰分公司 encapsulation isl 201 ip vrf forwarding VPN1 ip address 172.16.9.17 255.255.255.252 ;與分公司的互連IP地址 no ip redirects no ip mroute-cache! router bgp 65000 address-family ipv4 vrf VPN1 redistribute connected metric 88 ;重分配互連地址172.16.9.16/30 no auto-summary ;取消自動匯總 no synchronization ;采用全IBGP,所以可以取消同步 exit-address-family ! address-family vpnv4 neighbor 10.10.5.69 activate neighbor 10.10.5.69 route-reflector-client ;定義廣電中心RPM為路由反射器 neighbor 10.10.5.69 send-community extended no auto-summary exit-address-family |
通過以上配置,實現(xiàn)了江陰分公司與該公司總部的通訊 |