Configuring IPv6 MPLS L3VPN carrier's carrier
Network requirements
Configure carrier's carrier for the scenario shown in Figure 65. In this scenario:
PE 1 and PE 2 are the provider carrier's PE switches. They provide VPN services for the customer carrier.
CE 1 and CE 2 are the customer carrier's switches. They connect to the provider carrier's backbone as CE switches.
PE 3 and PE 4 are the customer carrier's PE switches. They provide IPv6 MPLS L3VPN services for end customers.
CE 3 and CE 4 are customers of the customer carrier.
The key to the carrier's carrier deployment is to configure exchange of two kinds of routes:
Exchange of the customer carrier's internal routes on the provider carrier's backbone.
Exchange of the end customers' internal routes between PE 3 and PE 4, the PEs of the customer carrier. An MP-IBGP peer relationship must be established between PE 3 and PE 4.
Figure 65: Network diagram
Configuration procedure
Configure MPLS L3VPN on the provider carrier backbone. Start IS-IS as the IGP, enable LDP on PE 1 and PE 2, and establish an MP-IBGP peer relationship between the PEs:
# Configure PE 1.
<PE1> system-view [PE1] interface loopback 0 [PE1-LoopBack0] ip address 3.3.3.9 32 [PE1-LoopBack0] quit [PE1] mpls lsr-id 3.3.3.9 [PE1] mpls ldp [PE1-ldp] quit [PE1] isis 1 [PE1-isis-1] network-entity 10.0000.0000.0000.0004.00 [PE1-isis-1] quit [PE1] interface loopback 0 [PE1-LoopBack0] isis enable 1 [PE1-LoopBack0] quit [PE1] interface vlan-interface 12 [PE1-Vlan-interface12] ip address 30.1.1.1 24 [PE1-Vlan-interface12] isis enable 1 [PE1-Vlan-interface12] mpls enable [PE1-Vlan-interface12] mpls ldp enable [PE1-Vlan-interface12] mpls ldp transport-address interface [PE1-Vlan-interface12] quit [PE1] bgp 100 [PE1-bgp] peer 4.4.4.9 as-number 100 [PE1-bgp] peer 4.4.4.9 connect-interface loopback 0 [PE1-bgp] address-family vpnv4 [PE1-bgp-vpnv4] peer 4.4.4.9 enable [PE1-bgp-vpnv4] quit [PE1-bgp] quit
# Configure PE 2 in the same way that PE 1 is configured. (Details not shown.)
# Verify that an LDP session in Operational state has been established between PE 1 and PE 2. This example uses PE 1.
[PE1] display mpls ldp peer Total number of peers: 1 Peer LDP ID State LAM Role GR MD5 KA Sent/Rcvd 4.4.4.9:0 Operational DU Active Off Off 8/8
# Verify that a BGP peer relationship in Established state has been established between PE 1 and PE 2. This example uses PE 1.
[PE1] display bgp peer BGP local router ID: 3.3.3.9 Local AS number: 100 Total number of peers: 1 Peers in established state: 1 Peer AS MsgRcvd MsgSent OutQ PrefRcv Up/Down State 4.4.4.9 100 3 6 0 0 00:00:32 Established
# Verify that the IS-IS neighbor relationship has been established between PE 1 and PE 2. This example uses PE 1.
[PE1] display isis peer Peer information for ISIS(1) ---------------------------- System Id: 0000.0000.0005 Interface: Vlan-interface12 Circuit Id: 0000.0000.0005.02 State: Up HoldTime: 8s Type: L1(L1L2) PRI: 64 System Id: 0000.0000.0005 Interface: Vlan-interface12 Circuit Id: 0000.0000.0005.02 State: Up HoldTime: 8s Type: L2(L1L2) PRI: 64Configure the customer carrier network. Start IS-IS as the IGP, and enable LDP between PE 3 and CE 1, and between PE 4 and CE 2:
# Configure PE 3.
<PE3> system-view [PE3] interface loopback 0 [PE3-LoopBack0] ip address 1.1.1.9 32 [PE3-LoopBack0] quit [PE3] mpls lsr-id 1.1.1.9 [PE3] mpls ldp [PE3-ldp] quit [PE3] isis 2 [PE3-isis-2] network-entity 10.0000.0000.0000.0001.00 [PE3-isis-2] quit [PE3] interface loopback 0 [PE3-LoopBack0] isis enable 2 [PE3-LoopBack0] quit [PE3] interface vlan-interface 12 [PE3-Vlan-interface12] ip address 10.1.1.1 24 [PE3-Vlan-interface12] isis enable 2 [PE3-Vlan-interface12] mpls enable [PE3-Vlan-interface12] mpls ldp enable [PE3-Vlan-interface12] mpls ldp transport-address interface [PE3-Vlan-interface12] quit
# Configure CE 1.
<CE1> system-view [CE1] interface loopback 0 [CE1-LoopBack0] ip address 2.2.2.9 32 [CE1-LoopBack0] quit [CE1] mpls lsr-id 2.2.2.9 [CE1] mpls ldp [CE1-ldp] quit [CE1] isis 2 [CE1-isis-2] network-entity 10.0000.0000.0000.0002.00 [CE1-isis-2] quit [CE1] interface loopback 0 [CE1-LoopBack0] isis enable 2 [CE1-LoopBack0] quit [CE1] interface vlan-interface 12 [CE1-Vlan-interface12] ip address 10.1.1.2 24 [CE1-Vlan-interface12] isis enable 2 [CE1-Vlan-interface12] mpls enable [CE1-Vlan-interface12] mpls ldp enable [CE1-Vlan-interface12] mpls ldp transport-address interface [CE1-Vlan-interface12] quit
PE 3 and CE 1 can establish an LDP session and IS-IS neighbor relationship between them.
# Configure PE 4 and CE 2 in the same way that PE 3 and CE 1 are configured. (Details not shown.)
Connect the customer carrier to the provider carrier:
# Configure PE 1.
[PE1] ip vpn-instance vpn1 [PE1-vpn-instance-vpn1] route-distinguisher 200:1 [PE1-vpn-instance-vpn1] vpn-target 1:1 [PE1-vpn-instance-vpn1] quit [PE1] mpls ldp [PE1-ldp] vpn-instance vpn1 [PE1-ldp-vpn-instance-vpn1] quit [PE1-ldp] quit [PE1] isis 2 vpn-instance vpn1 [PE1-isis-2] network-entity 10.0000.0000.0000.0003.00 [PE1-isis-2] import-route bgp allow-ibgp [PE1-isis-2] quit [PE1] interface vlan-interface11 [PE1-Vlan-interface11] ip binding vpn-instance vpn1 [PE1-Vlan-interface11] ip address 11.1.1.2 24 [PE1-Vlan-interface11] isis enable 2 [PE1-Vlan-interface11] mpls enable [PE1-Vlan-interface11] mpls ldp enable [PE1-Vlan-interface11] mpls ldp transport-address interface [PE1-Vlan-interface11] quit [PE1] bgp 100 [PE1-bgp] ip vpn-instance vpn1 [PE1-bgp-vpn1] address-family ipv4 unicast [PE1-bgp-ipv4-vpn1] import isis 2 [PE1-bgp-ipv4-vpn1] quit [PE1-bgp-vpn1] quit [PE1-bgp] quit
# Configure CE 1.
[CE1] interface vlan-interface11 [CE1-Vlan-interface11] ip address 11.1.1.1 24 [CE1-Vlan-interface11] isis enable 2 [CE1-Vlan-interface11] mpls enable [CE1-Vlan-interface11] mpls ldp enable [CE1-Vlan-interface11] mpls ldp transport-address interface [CE1-Vlan-interface11] quit
PE 1 and CE 1 can establish an LDP session and IS-IS neighbor relationship between them.
# Configure PE 2 and CE 2 in the same way that PE 1 and CE 1 are configured. (Details not shown.)
Connect end customers to the customer carrier:
# Configure CE 3.
<CE3> system-view [CE3] interface vlan-interface11 [CE3-Vlan-interface11] ipv6 address 2001:1::1 96 [CE3-Vlan-interface11] quit [CE3] bgp 65410 [CE3-bgp] peer 2001:1::2 as-number 100 [CE3-bgp] address-family ipv6 [CE3-bgp-ipv6] peer 2001:1::2 enable [CE3-bgp-ipv6] import-route direct [CE3-bgp-ipv6] quit [CE3-bgp] quit
# Configure PE 3.
[PE3] ip vpn-instance vpn1 [PE3-vpn-instance-vpn1] route-distinguisher 100:1 [PE3-vpn-instance-vpn1] vpn-target 1:1 [PE3-vpn-instance-vpn1] quit [PE3] interface Vlan-interface11 [PE3-Vlan-interface11] ip binding vpn-instance vpn1 [PE3-Vlan-interface11] ipv6 address 2001:1::2 96 [PE3-Vlan-interface11] quit [PE3] bgp 100 [PE3-bgp] ip vpn-instance vpn1 [PE3-bgp-vpn1] peer 2001:1::1 as-number 65410 [PE3-bgp-vpn1] address-family ipv6 unicast [PE3-bgp-ipv6-vpn1] peer 2001:1::1 enable [PE3-bgp-ipv6-vpn1] import-route direct [PE3-bgp-ipv6-vpn1] quit [PE3-bgp-vpn1] quit [PE3-bgp] quit
# Configure PE 4 and CE 4 in the same way that PE 3 and CE 3 are configured. (Details not shown.)
Establish an MP-IBGP peer relationship between PEs of the customer carrier to exchange the VPN routes of the customer carrier's customers:
# Configure PE 3.
[PE3] bgp 100 [PE3-bgp] peer 6.6.6.9 as-number 100 [PE3-bgp] peer 6.6.6.9 connect-interface loopback 0 [PE3-bgp] address-family vpnv6 [PE3-bgp-vpnv6] peer 6.6.6.9 enable [PE3-bgp-vpnv6] quit [PE3-bgp] quit
# Configure PE 3 in the same way that PE 3 is configured. (Details not shown.)
Verifying the configuration
# Execute the display ip routing-table command on PE 1 and PE 2. The output shows that only routes of the provider carrier network are present in the public network routing table of PE 1 and PE 2. This example uses PE 1.
[PE1] display ip routing-table
Routing Tables: Public
Destinations : 7 Routes : 7
Destination/Mask Proto Pre Cost NextHop Interface
3.3.3.9/32 Direct 0 0 127.0.0.1 InLoop0
4.4.4.9/32 ISIS 15 10 30.1.1.2 Vlan12
30.1.1.0/24 Direct 0 0 30.1.1.1 Vlan12
30.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
30.1.1.2/32 Direct 0 0 30.1.1.2 Vlan12
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
# Execute the display ip routing-table vpn-instance command on PE 1 and PE 2. The output shows that the internal routes of the customer carrier network are present in the VPN routing tables. This example uses PE 1.
[PE1] display ip routing-table vpn-instance vpn1
Routing Tables: vpn1
Destinations : 11 Routes : 11
Destination/Mask Proto Pre Cost NextHop Interface
1.1.1.9/32 ISIS 15 20 11.1.1.1 Vlan11
2.2.2.9/32 ISIS 15 10 11.1.1.1 Vlan11
5.5.5.9/32 BGP 255 0 4.4.4.9 NULL0
6.6.6.9/32 BGP 255 0 4.4.4.9 NULL0
10.1.1.0/24 ISIS 15 20 11.1.1.1 Vlan11
11.1.1.0/24 Direct 0 0 11.1.1.1 Vlan11
11.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
11.1.1.2/32 Direct 0 0 11.1.1.2 Vlan11
20.1.1.0/24 BGP 255 0 4.4.4.9 NULL0
21.1.1.0/24 BGP 255 0 4.4.4.9 NULL0
21.1.1.2/32 BGP 255 0 4.4.4.9 NULL0
# Execute the display ip routing-table command on CE 1 and CE 2. The output shows that the internal routes of the customer carrier network are present in the public network routing table. This example uses CE 1.
[CE1] display ip routing-table
Routing Tables: Public
Destinations : 16 Routes : 16
Destination/Mask Proto Pre Cost NextHop Interface
1.1.1.9/32 ISIS 15 10 10.1.1.2 Vlan12
2.2.2.9/32 Direct 0 0 127.0.0.1 InLoop0
5.5.5.9/32 ISIS 15 74 11.1.1.2 Vlan11
6.6.6.9/32 ISIS 15 74 11.1.1.2 Vlan11
10.1.1.0/24 Direct 0 0 10.1.1.2 Vlan12
10.1.1.1/32 Direct 0 0 10.1.1.1 Vlan12
10.1.1.2/32 Direct 0 0 127.0.0.1 InLoop0
11.1.1.0/24 Direct 0 0 11.1.1.1 Vlan11
11.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
11.1.1.2/32 Direct 0 0 11.1.1.2 Vlan11
20.1.1.0/24 ISIS 15 74 11.1.1.2 Vlan11
21.1.1.0/24 ISIS 15 74 11.1.1.2 Vlan11
21.1.1.2/32 ISIS 15 74 11.1.1.2 Vlan11
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
# Execute the display ipv6 routing-table vpn-instance command on PE 3 and PE 4. The output shows that the remote VPN route is present in the VPN routing table. This example uses PE 3.
[PE3] display ipv6 routing-table vpn-instance vpn1 Destinations : 6 Routes : 6 Destination: ::1/128 Protocol : Direct NextHop : ::1 Preference: 0 Interface : InLoop0 Cost : 0 Destination: 2001:1::/96 Protocol : Direct NextHop : :: Preference: 0 Interface : Vlan11 Cost : 0 Destination: 2001:1::2/128 Protocol : Direct NextHop : ::1 Preference: 0 Interface : InLoop0 Cost : 0 Destination: 2001:2::/96 Protocol : BGP4+ NextHop : ::FFFF:606:609 Preference: 0 Interface : NULL0 Cost : 0 Destination: FE80::/10 Protocol : Direct NextHop : :: Preference: 0 Interface : NULL0 Cost : 0 Destination: FF00::/8 Protocol : Direct NextHop : :: Preference: 0 Interface : NULL0 Cost : 0
# Verify that PE 3 and PE 4 can ping each other. (Details not shown.)
# Verify that CE 3 and CE 4 can ping each other. (Details not shown.)