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配置6VPE示例
通过配置6VPE功能，可以将私网实例下被分割的IPv6网络利用LSP隧道连接起来。
配置思路
采用如下的思路配置6VPE：
在IPv4骨干网上配置IGP协议，实现PE之间互通。
在各PE和P设备上配置MPLS和MPLS LDP，建立PE之间的LDP LSP。
在PE1和PE2上配置MP-IBGP，即PE间用BGP来交换IPv6 VPN路由。
在PE1和PE2上创建支持IPv4和IPv6地址族的VPN实例，并将PE连接CE的接口与VPN实例绑定。
在PE与CE之间配置BGP私网邻居（隧道转发）。
操作步骤
- 配置各设备上接口的IPv4和IPv6地址
具体配置过程请参见配置文件。
- 配置IPv4骨干网的IGP协议，实现PE之间互通，本例IGP以IS-IS为例
具体配置过程请参见配置文件。
- IPv4骨干网各设备及其接口使能MPLS、MPLS LDP，创建PE1和PE2之间的LDP LSP
具体配置过程请参见配置文件。
- PE之间建立BGP VPNv6对等体关系
# 配置PE1。
[~PE1] bgp 100[*PE1-bgp] peer 3.3.3.9 as-number 100[*PE1-bgp] peer 3.3.3.9 connect-interface loopback 1[*PE1-bgp] ipv6-family vpnv6[*PE1-bgp-af-vpnv6] peer 3.3.3.9 enable[*PE1-bgp-af-vpnv6] quit[*PE1-bgp] quit[*PE1] commit# 配置PE2。
[~PE2] bgp 100[*PE2-bgp] peer 1.1.1.9 as-number 100[*PE2-bgp] peer 1.1.1.9 connect-interface loopback 1[*PE2-bgp] ipv6-family vpnv6[*PE2-bgp-af-vpnv6] peer 1.1.1.9 enable[*PE2-bgp-af-vpnv6] quit[*PE2-bgp] quit[*PE2] commit以上配置完成后，在PE上可通过display bgp vpnv6 all peer查看VPNv6对等体的建立情况。以PE1的显示为例：
[~PE1] display bgp vpnv6 all peerBGP local router ID : 192.168.1.1 Local AS number : 100 Total number of peers : 1 Peers in established state : 1 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 3.3.3.9 4 100 4 3 0 00:01:50 Established 0
由上可以看到VPNv6对等体的状态为Established，说明PE1和PE2的VPNv6对等体关系已建立。
- PE上创建支持IPv4和IPv6地址族的VPN实例，并将PE连接CE的接口与VPN实例绑定
# 配置PE1。
[~PE1] ip vpn-instance vpna[*PE1-vpn-instance-vpna] ipv4-family[*PE1-vpn-instance-vpna-af-ipv4] route-distinguisher 100:1[*PE1-vpn-instance-vpna-af-ipv4] vpn-target 1:1[*PE1-vpn-instance-vpna-af-ipv4] quit[*PE1-vpn-instance-vpna] ipv6-family[*PE1-vpn-instance-vpna-af-ipv6] route-distinguisher 100:2[*PE1-vpn-instance-vpna-af-ipv6] vpn-target 2:2[*PE1-vpn-instance-vpna-af-ipv6] quit[*PE1-vpn-instance-vpna] quit[*PE1] interface gigabitethernet 2/0/0
[*PE1-GigabitEthernet2/0/0] ip binding vpn-instance vpna
[*PE1-GigabitEthernet2/0/0] ip address 10.1.1.2 24
[*PE1-GigabitEthernet2/0/0] quit
[*PE1] interface Loopback 0[*PE1-LoopBack0] ip binding vpn-instance vpna[*PE1-LoopBack0] ip address 1.1.1.1 32[*PE1-LoopBack0] quit[*PE1] commitPE2的配置与PE1类似，具体配置请参见配置文件。
- 在PE与CE之间配置BGP私网邻居（隧道转发）。
# 配置PE1。
[~PE1] mpls ldp vpn-instance vpna[*PE1-mpls-ldp-vpn-instance-vpna] quit[*PE1] ospf 1 vpn-instance vpna[*PE1-ospf-1] area 0[*PE1-ospf-1-area-0.0.0.0] network 1.1.1.1 0.0.0.0[*PE1-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255[*PE1-ospf-1-area-0.0.0.0] quit[*PE1-ospf-1] quit[*PE1] bgp 100[*PE1-bgp] vpn-instance vpna[*PE1-bgp-instance-vpna] peer 4.4.4.9 as-number 100[*PE1-bgp-instance-vpna] peer 4.4.4.9 connect-interface LoopBack0[*PE1-bgp-instance-vpna] quit[*PE1-bgp] ipv6-family vpn-instance vpna[*PE1-bgp-6-vpna] peer 4.4.4.9 enable[*PE1-bgp-6-vpna] peer 4.4.4.9 label-route-capability[*PE1] commit# 配置CE1。
[~CE1] mpls lsr-id 4.4.4.9[*CE1] mpls[*CE1-mpls] mpls ldp[*CE1-mpls-ldp] quit[*CE1] ospf 1[*CE1-ospf-1] area 0[*CE1-ospf-1-area-0.0.0.0] network 4.4.4.9 0.0.0.0[*CE1-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255[*CE1-ospf-1-area-0.0.0.0] quit[*CE1-ospf-1] quit[*CE1] interface gigabitethernet 1/0/0
[*CE1-GigabitEthernet1/0/0] mpls
[*CE1-GigabitEthernet1/0/0] mpls ldp
[*CE1-GigabitEthernet1/0/0] quit
[*CE1] bgp 100[*CE1-bgp] peer 1.1.1.1 as-number 100[*CE1-bgp] peer 1.1.1.1 connect-interface LoopBack1[*CE1-bgp] ipv6-family unicast[*CE1-bgp-af-ipv6] peer 1.1.1.1 enable[*CE1-bgp-af-ipv6] peer 1.1.1.1 label-route-capability[*CE1-bgp-af-ipv6] network 2001:DB8:8:: 64[*CE1-bgp-af-ipv6] quit[*CE1-bgp] quit[*CE1] commitPE2-CE2之间的配置与PE1-CE1之间类似，具体配置信息请参见配置文件。
- 检查配置结果
以上配置完成后，CE1与CE2上可以看到对方的IPv6路由，并且彼此之间能够带源Ping通。以CE1的显示为例：
[~CE1] display ipv6 routing-tableRouting Table : _public_ Destinations : 7 Routes : 7 Destination : ::1 PrefixLength : 128 NextHop : ::1 Preference : 0 Cost : 0 Protocol : Direct RelayNextHop : :: TunnelID : 0x0 Interface : InLoopBack0 Flags : D Destination : ::FFFF:127.0.0.0 PrefixLength : 104 NextHop : ::FFFF:127.0.0.1 Preference : 0 Cost : 0 Protocol : Direct RelayNextHop : :: TunnelID : 0x0 Interface : InLoopBack0 Flags : D Destination : ::FFFF:127.0.0.1 PrefixLength : 128 NextHop : ::1 Preference : 0 Cost : 0 Protocol : Direct RelayNextHop : :: TunnelID : 0x0 Interface : InLoopBack0 Flags : D Destination : 2001:DB8:8:: PrefixLength : 64 NextHop : 2001:DB8:8::1 Preference : 0 Cost : 0 Protocol : Direct RelayNextHop : :: TunnelID : 0x0 Interface : LoopBack0 Flags : D Destination : 2001:DB8:8::1 PrefixLength : 128 NextHop : ::1 Preference : 0 Cost : 0 Protocol : Direct RelayNextHop : :: TunnelID : 0x0 Interface : LoopBack0 Flags : D Destination : 2001:DB8:9:: PrefixLength : 64 NextHop : ::FFFF:1.1.1.1 Preference : 255 Cost : 0 Protocol : IBGP RelayNextHop : ::FFFF:10.1.1.2 TunnelID : 0x0000000001004c4b42 Interface : GigabitEthernet2/0/0 Flags : RD Destination : FE80:: PrefixLength : 10 NextHop : :: Preference : 0 Cost : 0 Protocol : Direct RelayNextHop : :: TunnelID : 0x0 Interface : NULL0 Flags : DB[~CE1] ping ipv6 -a 2001:db8:8::1 2001:db8:9::1PING 2001:db8:9::1 : 56 data bytes, press CTRL_C to break Reply from 2001:db8:9::1 bytes=56 Sequence=1 hop limit=62 time = 170 ms Reply from 2001:db8:9::1 bytes=56 Sequence=2 hop limit=62 time = 140 ms Reply from 2001:db8:9::1 bytes=56 Sequence=3 hop limit=62 time = 150 ms Reply from 2001:db8:9::1 bytes=56 Sequence=4 hop limit=62 time = 140 ms Reply from 2001:db8:9::1 bytes=56 Sequence=5 hop limit=62 time = 170 ms --- 2001:db8:9::1 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 140/154/170 ms
配置文件
PE1配置文件
# sysname PE1 # ip vpn-instance vpna ipv4-family route-distinguisher 100:1 apply-label per-instance vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity ipv6-family route-distinguisher 100:2 apply-label per-instance vpn-target 2:2 export-extcommunity vpn-target 2:2 import-extcommunity # mpls lsr-id 1.1.1.9 # mpls # mpls ldp # mpls ldp vpn-instance vpna # isis 1 network-entity 10.1111.1111.1111.00 # interface GigabitEthernet1/0/0 undo shutdown ip address 192.168.1.1 255.255.255.0 isis enable 1 mpls mpls ldp # interface GigabitEthernet2/0/0 undo shutdown ip binding vpn-instance vpna ip address 10.1.1.2 255.255.255.0 mpls mpls ldp # interface LoopBack0 ip binding vpn-instance vpna ip address 1.1.1.1 255.255.255.255 # interface LoopBack1 ip address 1.1.1.9 255.255.255.255 isis enable 1 # bgp 100 peer 3.3.3.9 as-number 100 peer 3.3.3.9 connect-interface LoopBack1 # ipv4-family unicast undo synchronization peer 3.3.3.9 enable # vpn-instance vpna peer 4.4.4.9 as-number 100 peer 4.4.4.9 connect-interface LoopBack0 # ipv6-family vpnv6 policy vpn-target peer 3.3.3.9 enable # ipv6-family vpn-instance vpna peer 4.4.4.9 enable peer 4.4.4.9 label-route-capability # ospf 1 vpn-instance vpna area 0.0.0.0 network 1.1.1.1 0.0.0.0 network 10.1.1.0 0.0.0.255 # return
P的配置文件
# sysname P # mpls lsr-id 2.2.2.9 # mpls # mpls ldp # isis 1 network-entity 20.2222.2222.2222.00 # interface GigabitEthernet1/0/0 undo shutdown ip address 192.168.1.2 255.255.255.0 isis enable 1 mpls mpls ldp # interface GigabitEthernet2/0/0 undo shutdown ip address 192.168.2.1 255.255.255.0 isis enable 1 mpls mpls ldp # interface LoopBack1 ip address 2.2.2.9 255.255.255.255 isis enable 1 # return
PE2的配置文件
# sysname PE2 # ip vpn-instance vpna ipv4-family route-distinguisher 100:1 apply-label per-instance vpn-target 1:1 export-extcommunity vpn-target 1:1 import-extcommunity ipv6-family route-distinguisher 100:2 apply-label per-instance vpn-target 2:2 export-extcommunity vpn-target 2:2 import-extcommunity # mpls lsr-id 3.3.3.9 # mpls # mpls ldp # mpls ldp vpn-instance vpna # isis 1 network-entity 30.3333.3333.3333.00 # interface GigabitEthernet1/0/0 undo shutdown ip address 192.168.2.2 255.255.255.0 isis enable 1 mpls mpls ldp # interface GigabitEthernet2/0/0 undo shutdown ip binding vpn-instance vpna ip address 10.2.1.2 255.255.255.0 mpls mpls ldp # interface LoopBack0 ip binding vpn-instance vpna ip address 3.3.3.3 255.255.255.255 # interface LoopBack1 ip address 3.3.3.9 255.255.255.255 isis enable 1 # bgp 100 peer 1.1.1.9 as-number 100 peer 1.1.1.9 connect-interface LoopBack1 # ipv4-family unicast undo synchronization peer 1.1.1.9 enable # vpn-instance vpna peer 5.5.5.9 as-number 100 peer 5.5.5.9 connect-interface LoopBack0 # ipv6-family vpnv6 policy vpn-target peer 1.1.1.9 enable # ipv6-family vpn-instance vpna import-route direct peer 5.5.5.9 enable peer 5.5.5.9 label-route-capability # ospf 1 vpn-instance vpna area 0.0.0.0 network 3.3.3.3 0.0.0.0 network 10.2.1.0 0.0.0.255 # return
CE1的配置文件
# sysname CE1 # mpls lsr-id 4.4.4.9 # mpls # mpls ldp # interface GigabitEthernet1/0/0 undo shutdown ip address 10.1.1.1 255.255.255.0 mpls mpls ldp # interface LoopBack0 ipv6 enable ipv6 address 2001:DB8:8::1/64 # interface LoopBack1 ip address 4.4.4.9 255.255.255.255 # bgp 100 peer 1.1.1.1 as-number 100 peer 1.1.1.1 connect-interface LoopBack1 # ipv4-family unicast undo synchronization peer 1.1.1.1 enable # ipv6-family unicast undo synchronization network 2001:DB8:8:: 64 peer 1.1.1.1 enable peer 1.1.1.1 label-route-capability # ospf 1 area 0.0.0.0 network 4.4.4.9 0.0.0.0 network 10.1.1.0 0.0.0.255 # returnCE2的配置文件
# sysname CE2 # mpls lsr-id 5.5.5.9 # mpls # mpls ldp # interface GigabitEthernet1/0/0 undo shutdown ip address 10.2.1.1 255.255.255.0 mpls mpls ldp # interface LoopBack0 ipv6 enable ipv6 address 2001:DB8:9::1/64 # interface LoopBack1 ip address 5.5.5.9 255.255.255.255 # bgp 100 peer 3.3.3.3 as-number 100 peer 3.3.3.3 connect-interface LoopBack1 # ipv4-family unicast undo synchronization peer 3.3.3.3 enable # ipv6-family unicast undo synchronization network 2001:DB8:9:: 64 peer 3.3.3.3 enable peer 3.3.3.3 label-route-capability # ospf 1 area 0.0.0.0 network 5.5.5.9 0.0.0.0 network 10.2.1.0 0.0.0.255 # return
