全球路由表应用举例 _云知道

CE 1
version 12.2
!
hostname CE-1
!
ip subnet-zero
!
interface Loopback0
ip address 10.1.1.1 255.255.255.255
!
interface Loopback2
ip address 11.11.11.1 255.255.255.0
!
interface Serial8/0
ip address 192.168.10.1 255.255.255.252
!--- The interface is connected to PE 1.
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.10.2
!--- This is the default route to route all packets to PE 1.
!
PE 1
version 12.2
!
hostname PE-1
!
ip subnet-zero
!
ip vrf customer1
!--- This configured VRF customer1.
rd 100:1
!--- This configured the route distiguisher for VRF.
route-target eXPort 1:1
route-target import 1:1
!--- This configured the export and import policies into VRF.
!
ip cef
!--- This enabled Cisco Express Forwarding (CEF) switching.
!
interface Loopback0
ip address 10.1.1.2 255.255.255.255
!
interface Ethernet0/0
!--- It is connected to P router.
ip address 10.10.23.2 255.255.255.0
tag-switching ip
!--- MPLS switching is enabled.
!
interface Serial8/0
! Connected to CE-1
ip vrf forwarding customer1
!--- Route forwarding based on customer1 VRF is enabled.
ip address 192.168.10.2 255.255.255.252
!
router ospf 1
log-adjacency-changes
redistribute static subnets
network 0.0.0.0 255.255.255.255 area 0
!
router bgp 100
no synchronization
bgp log-neighbor-changes
neighbor 10.1.1.4 remote-as 100
!--- Neighbor relationship with PE 2 is established.
neighbor 10.1.1.4 update-source Loopback0
neighbor 10.1.1.4 next-hop-self
no auto-summary
!
address-family ipv4 vrf customer1
!--- The address-family configuration mode specifies IPv4 unicast
!---address prefixes for customer1 VRF.
no auto-summary
no synchronization
network 11.11.11.0 mask 255.255.255.0
!--- CE 1 network 11.11.11.0/24 to PE 2 is announced.
network 192.168.10.0 mask 255.255.255.252
exit-address-family
!
address-family vpnv4
!--- This is the address-family VPNV4 configuration mode for
!--- configuring BGP sessions.
neighbor 10.1.1.4 activate
neighbor 10.1.1.4 send-community extended
no auto-summary
exit-address-family
!
ip classless
ip route 11.11.11.0 255.255.255.0 Serial8/0 192.168.10.1
!--- The static route in the global routing table is pointing to
!--- the interface connected to CE 1.
ip route vrf customer1 0.0.0.0 0.0.0.0 192.168.67.1 global
!--- The static default route under customer1 VRF, routing packets
!--- outside of VPN to the Internet gateway.
! routes
ip route vrf customer1 11.11.11.0 255.255.255.0 192.168.10.1
!--- The static route for network 11.11.11.0/24 (CE-1 Network) under
!---customer1 VRF ensures the reachability of CE 1 network from the
!--- other VPN sites
P
version 12.2
!
hostname P
!
ip subnet-zero
!
ip cef
!--- CEF switching is enabled.
!
interface Loopback0
ip address 10.1.1.3 255.255.255.255
!
interface Ethernet0/0
!--- This is connected to PE 1.
ip address 10.10.23.3 255.255.255.0
tag-switching ip
!--- MPLS switching is enabled.
!
interface Ethernet1/0
!--- This is connected to PE 2.
ip address 10.10.34.3 255.255.255.0
tag-switching ip
!
interface Ethernet2/0
!--- This is connected to the Internet gateway.
ip address 10.10.36.3 255.255.255.0
tag-switching ip
!

全球路由表应用举例

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