VPNv6路由反射器拓撲結構：
部署IPv6 VPN時，為了減少PE之間的MP-IBGP連接的數量，減輕PE的負擔，可選擇骨幹網相同AS內的P或PE設備作為路由反射器，反射VPN-IPv6路由，便於維護和管理。PE1、PE2、RR都在骨幹網AS100內。CE1和CE2屬於vpn1。要求選擇設備RR作為反射器，配置帶反射器的VPN。
拓撲圖：
VPNv6路由反射器配置方法：
1、PE與反射器RR之間建立MP-IBGP連接；PE之間不再建立MP-IBGP連接。
2、PE與CE之間建立EBGP連接。
3、公網隧道使用MPLS LSP，LSP沿途的設備和接口上都開啟MPLS LDP。
4、 RR需要保存所有來自PE1和PE2的VPN-IPv6路由信息，以通告給PE。因此，RR應接收所有的VPN-IPv6路由信息，不對它們進行VPN-Target過濾。
VPNv6路由反射器配置步驟：
1、配置各接口所屬VLAN，並配置VLANIF接口和Loopback接口IP地址
[~HUAWEI]sysname PE1
[~PE1]int loop 0
[*PE1-LoopBack0]ip add 1.1.1.1 32
[*PE1]vlan batch 10 30
[*PE1]int g1/0/0
[*PE1-GE1/0/0]port link-type trunk
[*PE1-GE1/0/0]port trunk allow-pass vlan 10
[*PE1]int g1/0/1
[*PE1-GE1/0/1]port link-type trunk
[*PE1-GE1/0/1]port trunk allow-pass vlan 30
[*PE1]int vlan 10
[*PE1-Vlanif10]ip add 10.1.12.1 24
RR配置
[~RR]int loop 0
[*RR-LoopBack0]ip add 2.2.2.2 32
[*RR]vlan batch 10 20
[*RR]int g1/0/0
[*RR-GE1/0/0]port link-type trunk
[*RR-GE1/0/0]port trunk allow-pass vlan 10
[*RR]int g1/0/1
[*RR-GE1/0/1]port link-type trunk
[*RR-GE1/0/1]port trunk allow-pass vlan 20
[*RR]int vlan 10
[*RR-Vlanif10]ip add 10.1.12.2 24
[*RR]int vlan 20
[*RR-Vlanif20]ip add 10.1.23.2 24
配置PE2
[~HUAWEI]sysname PE2
[~PE2]int loop 0
[*PE2-LoopBack0]ip add 3.3.3.3 32
[*PE2]vlan batch 20 40
[*PE2]int g1/0/0
[*PE2-GE1/0/0]port link-type trunk
[*PE2-GE1/0/0]port trunk allow-pass vlan 20
[*PE2]int g1/0/1
[*PE2-GE1/0/1]port link-type trunk
[*PE2-GE1/0/1]port trunk allow-pass vlan 40
[*PE2]int vlan 20
[*PE2-Vlanif20]ip add 10.1.23.3 24
配置CE1
[~HUAWEI]sysname CE1
[~CE1]vlan batch 30
[~CE1]int g1/0/0
[~CE1-GE1/0/0]port link-type trunk
[*CE1-GE1/0/0]port trunk allow-pass vlan 30
[*CE1]int vlan 30
[*CE1-Vlanif30]ipv6 enable
[*CE1-Vlanif30]ipv6 add 2001::4/64
配置CE2
[~HUAWEI]sysname CE2
[~CE2]vlan batch 40
[*CE2]int g1/0/0
[*CE2-GE1/0/0]port link-type trunk
[*CE2-GE1/0/0]port trunk allow-pass vlan 40
[*CE2]int vlan 40
[*CE2-Vlanif40]ipv6 enable
[*CE2-Vlanif40]ipv6 add 2002::5/64
2、 在MPLS骨幹網配置IGP，實現設備之間互通
[~PE1]ospf
[*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 10.1.12.1 0.0.0.0
[~RR]ospf
[*RR-ospf-1]area 0
[*RR-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
[*RR-ospf-1-area-0.0.0.0]net
[*RR-ospf-1-area-0.0.0.0]network 10.1.23.2 0.0.0.0
[*RR-ospf-1-area-0.0.0.0]net
[*RR-ospf-1-area-0.0.0.0]network 10.1.12.2 0.0.0.0
[~PE2]ospf
[*PE2-ospf-1]area 0
[*PE2-ospf-1-area-0.0.0.0]net 3.3.3.3 0.0.0.0
[*PE2-ospf-1-area-0.0.0.0]net 10.1.23.3 0.0.0.0
3、在MPLS骨幹網上建立LSP隧道
[~PE1]mpls lsr-id 1.1.1.1
[*PE1]mpls
[*PE1]mpls ldp
[*PE1]int vlan 10
[*PE1-Vlanif10]mpls
[*PE1-Vlanif10]mpls ldp
[~RR]mpls lsr-id 2.2.2.2
[*RR]mpls
[*RR]mpls ldp
[*RR]int vlan 10
[*RR-Vlanif10]mpls
[*RR-Vlanif10]mpls ldp
[*RR]int vlan 20
[*RR-Vlanif20]mpls
[*RR-Vlanif20]mpls ldp
[~PE2]mpls lsr-id 3.3.3.3
[*PE2]mpls
[*PE2]mpls ldp
[*PE2]int vlan 20
[*PE2-Vlanif20]mpls
[*PE2-Vlanif20]mpls ldp
4、在PE設備上配置IPv6 VPN實例
[~PE1]ip vpn-instance vpn1
[*PE1-vpn-instance-vpn1]ipv6-family
[*PE1-vpn-instance-vpn1-af-ipv6]route-distinguisher 100:1
[*PE1-vpn-instance-vpn1-af-ipv6]vpn-target 1:1 both
[*PE1]int vlan 30
[*PE1-Vlanif30]ipv6 enable
[~PE1-Vlanif30]ip binding vpn-instance vpn1
[*PE1-Vlanif30]ipv6 add 2001::1/64
[~PE2]ip vpn-instance vpn1
[*PE2-vpn-instance-vpn1]ipv6-family
[*PE2-vpn-instance-vpn1-af-ipv6]route-distinguisher 100:1
[*PE2-vpn-instance-vpn1-af-ipv6]vpn-target 1:1 both
[*PE2]int vlan 40
[*PE2-Vlanif40]ipv6 enable
[~PE2-Vlanif40]ip binding vpn-instance vpn1
[*PE2-Vlanif40]ipv6 add 2002::3/64
5、在PE與CE之間建立EBGP對等體關係，引入VPN路由
[~CE1]bgp 200
[*CE1-bgp]router-id 10.10.10.10
[*CE1-bgp]peer 2001::1 as-number 100
[*CE1-bgp]ipv6-family unicast
[*CE1-bgp-af-ipv6]peer 2001::1 enable
[*CE1-bgp-af-ipv6]import-route direct
[~PE1]bgp 100
[~PE1-bgp]router-id 1.1.1.1
[~PE1-bgp]ipv6-family vpn-instance vpn1
[~PE1-bgp-6-vpn1]peer 2001::4 as-number 200
[~PE1-bgp-6-vpn1]import-route direct
[~CE2]bgp 300
[*CE2-bgp]router-id 20.20.20.20
[*CE2-bgp]peer 2002::3 as-number 100
[*CE2-bgp]ipv6-family unicast
[*CE2-bgp-af-ipv6]peer 2002::3 enable
[*CE2-bgp-af-ipv6]import-route direct
[~PE2]bgp 100
[*PE2-bgp]router-id 3.3.3.3
[*PE2-bgp]ipv6-family vpn-instance vpn1
[*PE2-bgp-6-vpn1]peer 2002::5 as-number 300
[*PE2-bgp-6-vpn1]import-route direct
6、建立PE與反射器間的MP-IBGP對等體關係
[~PE1]bgp 100
[~PE1-bgp]peer 2.2.2.2 as-number 100
[*PE1-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[*PE1-bgp]ipv6-family vpnv6
[*PE1-bgp-af-vpnv6]peer 2.2.2.2 enable
[~RR]bgp 100
[*RR-bgp]peer 1.1.1.1 as-number 100
[*RR-bgp]peer 1.1.1.1 connect-interface loop 0
[*RR-bgp]peer 3.3.3.3 as-number 100
[*RR-bgp]peer 3.3.3.3 connect-interface loop 0
[*RR-bgp]ipv6-family vpnv6
[*RR-bgp-af-vpnv6]peer 1.1.1.1 enable
[*RR-bgp-af-vpnv6]peer 3.3.3.3 enable
[~PE2]bgp 100
[~PE2-bgp]peer 2.2.2.2 as-number 100
[*PE2-bgp]peer 2.2.2.2 connect-interface loop 0
[*PE2-bgp]ipv6-family vpnv6
[*PE2-bgp-af-vpnv6]peer 2.2.2.2 enable
查看BGP對等關係
[~PE1]dis bgp vpnv6 all peer
BGP local router ID : 1.1.1.1
Local AS number : 100
Total number of peers : 2
Peers in established state : 2
Peer V AS MsgRcvd MsgSent OutQ Up/DownState PrefRcv
2.2.2.2 4 100 8 9 0 00:03:52 Established 0
Peer of IPv6-family for vpn instance :
VPN-Instance vpn1, Router ID 1.1.1.1:
Peer V AS MsgRcvd MsgSent OutQ Up/DownState PrefRcv
2001::4 4 2003433 0 00:25:51 Established 1
7、在RR上配置反射功能
[~RR]bgp 100
[~RR-bgp]ipv6-family vpnv6
[~RR-bgp-af-vpnv6]peer 1.1.1.1 reflect-client
[*RR-bgp-af-vpnv6]peer 3.3.3.3 reflect-client
[*RR-bgp-af-vpnv6]undo policy vpn-target
8、在CE1上測試到CE2
[~CE1]ping ipv 2002::5
PING 2002::5 : 56 data bytes, press CTRL_C to break
Reply from 2002::5
bytes=56 Sequence=1 hop limit=61 time=31 ms
Reply from 2002::5
bytes=56 Sequence=2 hop limit=61 time=28 ms
Reply from 2002::5
bytes=56 Sequence=3 hop limit=61 time=20 ms
Reply from 2002::5
bytes=56 Sequence=4 hop limit=61 time=28 ms
Reply from 2002::5
bytes=56 Sequence=5 hop limit=61 time=39 ms
在PE1上查看vpn路由表
[~PE1]dis ipv6 routing-table vpn-instance vpn1
Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole
route
------------------------------------------------------------------------------
Routing Table : vpn1
Destinations : 4 Routes : 4
Destination : 2001:: PrefixLength : 64
NextHop : 2001::1 Preference : 0
Cost : 0Protocol : Direct
RelayNextHop : :: TunnelID : 0x0
Interface: Vlanif30Flags : D
Destination : 2001::1 PrefixLength : 128
NextHop : ::1 Preference : 0
Cost : 0Protocol : Direct
RelayNextHop : :: TunnelID : 0x0
Interface: Vlanif30Flags : D
Destination : 2002:: PrefixLength : 64
NextHop : ::FFFF:3.3.3.3 Preference : 255
Cost : 0Protocol : IBGP
RelayNextHop : ::FFFF:10.1.12.2 TunnelID : 0x00000000
01004c4b43
Interface: Vlanif10Flags : RD
Destination : FE80:: PrefixLength : 10
NextHop : :: Preference : 0
Cost : 0Protocol : Direct
RelayNextHop : :: TunnelID : 0x0
Interface: NULL0Flags : DB