Example for Configuring L3VPNv6 Routes to Be Recursed to Manually Configured SR-MPLS TE Policies
This section provides an example for configuring L3VPNv6 routes to be recursed to manually configured SR Policies to ensure secure communication between users of the same VPN.
Networking Requirements
On the network shown in Figure 1:
CE1 and CE2 belong to a VPN instance named vpna.
The VPN target used by vpna is 111:1.
To ensure secure communication between CE1 and CE2, configure L3VPNv6 routes to be recursed to SR-MPLS TE Policies. Because multiple links exist between PEs on the public network, other links must be able to provide protection for the primary link.
Precautions
If an interface connecting a PE to a CE is bound to a VPN instance, Layer 3 configurations, such as the IPv6 address and routing protocol configuration, on the interface will be deleted. Reconfigure them if needed.
Configuration Roadmap
The configuration roadmap is as follows:
Configure IS-IS on the backbone network for the PEs to communicate.
Enable MPLS and SR for each device on the backbone network, and configure static adjacency SIDs.
Configure an SR-MPLS TE Policy with primary and backup paths on each PE.
Configure SBFD and HSB on each PE to enhance SR-MPLS TE Policy reliability.
Apply an import or export route-policy to a specified VPNv4 peer on each PE, and set the Color Extended Community. In this example, an import route-policy with the Color Extended Community is applied.
Establish an MP-IBGP peer relationship between PEs for them to exchange routing information.
Create a VPN instance and enable the IPv6 address family on each PE. Then, bind each PE's interface connecting the PE to a CE to the corresponding VPN instance.
Configure a tunnel selection policy on each PE.
Establish an EBGP peer relationship between each CE-PE pair for the CE and PE to exchange routing information.
Data Preparation
To complete the configuration, you need the following data:
MPLS LSR IDs of PEs and Ps
VPN target and RD of vpna
Procedure
- Configure interface IP addresses.
# Configure PE1.
<HUAWEI> system-view [~HUAWEI] sysname PE1 [*HUAWEI] commit [~PE1] interface loopback 1 [*PE1-LoopBack1] ip address 1.1.1.9 32 [*PE1-LoopBack1] quit [*PE1] interface gigabitethernet0/1/0 [*PE1-GigabitEthernet0/1/0] ip address 10.13.1.1 24 [*PE1-GigabitEthernet0/1/0] quit [*PE1] interface gigabitethernet0/1/16 [*PE1-GigabitEthernet0/1/16] ip address 10.11.1.1 24 [*PE1-GigabitEthernet0/1/16] quit [*PE1] commit
# Configure P1.
<HUAWEI> system-view [~HUAWEI] sysname P1 [*HUAWEI] commit [~P1] interface loopback 1 [*P1-LoopBack1] ip address 2.2.2.9 32 [*P1-LoopBack1] quit [*P1] interface gigabitethernet0/1/0 [*P1-GigabitEthernet0/1/0] ip address 10.11.1.2 24 [*P1-GigabitEthernet0/1/0] quit [*P1] interface gigabitethernet0/1/8 [*P1-GigabitEthernet0/1/8] ip address 10.12.1.1 24 [*P1-GigabitEthernet0/1/8] quit [*P1] commit
# Configure PE2.
<HUAWEI> system-view [~HUAWEI] sysname PE2 [*HUAWEI] commit [~PE2] interface loopback 1 [*PE2-LoopBack1] ip address 3.3.3.9 32 [*PE2-LoopBack1] quit [*PE2] interface gigabitethernet0/1/0 [*PE2-GigabitEthernet0/1/0] ip address 10.14.1.2 24 [*PE2-GigabitEthernet0/1/0] quit [*PE2] interface gigabitethernet0/1/16 [*PE2-GigabitEthernet0/1/16] ip address 10.12.1.2 24 [*PE2-GigabitEthernet0/1/16] quit [*PE2] commit
# Configure P2.
<HUAWEI> system-view [~HUAWEI] sysname P2 [*HUAWEI] commit [~P2] interface loopback 1 [*P2-LoopBack1] ip address 4.4.4.9 32 [*P2-LoopBack1] quit [*P2] interface gigabitethernet0/1/0 [*P2-GigabitEthernet0/1/0] ip address 10.13.1.2 24 [*P2-GigabitEthernet0/1/0] quit [*P2] interface gigabitethernet0/1/8 [*P2-GigabitEthernet0/1/8] ip address 10.14.1.1 24 [*P2-GigabitEthernet0/1/8] quit [*P2] commit
- Configure an IGP for each device on the backbone network to implement interworking between PEs and Ps. The following example uses IS-IS.
# Configure PE1.
[~PE1] isis 1 [*PE1-isis-1] is-level level-1 [*PE1-isis-1] network-entity 10.0000.0000.0001.00 [*PE1-isis-1] quit [*PE1] interface loopback 1 [*PE1-LoopBack1] isis enable 1 [*PE1-LoopBack1] quit [*PE1] interface gigabitethernet0/1/0 [*PE1-GigabitEthernet0/1/0] isis enable 1 [*PE1-GigabitEthernet0/1/0] quit [*PE1] interface gigabitethernet0/1/16 [*PE1-GigabitEthernet0/1/16] isis enable 1 [*PE1-GigabitEthernet0/1/16] quit [*PE1] commit
# Configure P1.
[~P1] isis 1 [*P1-isis-1] is-level level-1 [*P1-isis-1] network-entity 10.0000.0000.0002.00 [*P1-isis-1] quit [*P1] interface loopback 1 [*P1-LoopBack1] isis enable 1 [*P1-LoopBack1] quit [*P1] interface gigabitethernet0/1/0 [*P1-GigabitEthernet0/1/0] isis enable 1 [*P1-GigabitEthernet0/1/0] quit [*P1] interface gigabitethernet0/1/8 [*P1-GigabitEthernet0/1/8] isis enable 1 [*P1-GigabitEthernet0/1/8] quit [*P1] commit
# Configure PE2.
[~PE2] isis 1 [*PE2-isis-1] is-level level-1 [*PE2-isis-1] network-entity 10.0000.0000.0003.00 [*PE2-isis-1] quit [*PE2] interface loopback 1 [*PE2-LoopBack1] isis enable 1 [*PE2-LoopBack1] quit [*PE2] interface gigabitethernet0/1/16 [*PE2-GigabitEthernet0/1/16] isis enable 1 [*PE2-GigabitEthernet0/1/16] quit [*PE2] interface gigabitethernet0/1/0 [*PE2-GigabitEthernet0/1/0] isis enable 1 [*PE2-GigabitEthernet0/1/0] quit [*PE2] commit
# Configure P2.
[~P2] isis 1 [*P2-isis-1] is-level level-1 [*P2-isis-1] network-entity 10.0000.0000.0004.00 [*P2-isis-1] quit [*P2] interface loopback 1 [*P2-LoopBack1] isis enable 1 [*P2-LoopBack1] quit [*P2] interface gigabitethernet0/1/0 [*P2-GigabitEthernet0/1/0] isis enable 1 [*P2-GigabitEthernet0/1/0] quit [*P2] interface gigabitethernet0/1/8 [*P2-GigabitEthernet0/1/8] isis enable 1 [*P2-GigabitEthernet0/1/8] quit [*P2] commit
- Configure basic MPLS functions for each device on the backbone network.
# Configure PE1.
[~PE1] mpls lsr-id 1.1.1.9 [*PE1] mpls [*PE1-mpls] commit [~PE1-mpls] quit
# Configure P1.
[~P1] mpls lsr-id 2.2.2.9 [*P1] mpls [*P1-mpls] commit [~P1-mpls] quit
# Configure PE2.
[~PE2] mpls lsr-id 3.3.3.9 [*PE2] mpls [*PE2-mpls] commit [~PE2-mpls] quit
# Configure P2.
[~P2] mpls lsr-id 4.4.4.9 [*P2] mpls [*P2-mpls] commit [~P2-mpls] quit
- Enable SR for each device on the backbone network.
# Configure PE1.
[~PE1] segment-routing [*PE1-segment-routing] ipv4 adjacency local-ip-addr 10.11.1.1 remote-ip-addr 10.11.1.2 sid 330000 [*PE1-segment-routing] ipv4 adjacency local-ip-addr 10.13.1.1 remote-ip-addr 10.13.1.2 sid 330001 [*PE1-segment-routing] quit [*PE1] isis 1 [*PE1-isis-1] cost-style wide [*PE1-isis-1] segment-routing mpls [*PE1-isis-1] quit [*PE1] commit
# Configure P1.
[~P1] segment-routing [*P1-segment-routing] ipv4 adjacency local-ip-addr 10.11.1.2 remote-ip-addr 10.11.1.1 sid 330003 [*P1-segment-routing] ipv4 adjacency local-ip-addr 10.12.1.1 remote-ip-addr 10.12.1.2 sid 330002 [*P1-segment-routing] quit [*P1] isis 1 [*P1-isis-1] cost-style wide [*P1-isis-1] segment-routing mpls [*P1-isis-1] quit [*P1] commit
# Configure PE2.
[~PE2] segment-routing [*PE2-segment-routing] ipv4 adjacency local-ip-addr 10.12.1.2 remote-ip-addr 10.12.1.1 sid 330000 [*PE2-segment-routing] ipv4 adjacency local-ip-addr 10.14.1.2 remote-ip-addr 10.14.1.1 sid 330001 [*PE2-segment-routing] quit [*PE2] isis 1 [*PE2-isis-1] cost-style wide [*PE2-isis-1] segment-routing mpls [*PE2-isis-1] quit [*PE2] commit
# Configure P2.
[~P2] segment-routing [*P2-segment-routing] ipv4 adjacency local-ip-addr 10.13.1.2 remote-ip-addr 10.13.1.1 sid 330002 [*P2-segment-routing] ipv4 adjacency local-ip-addr 10.14.1.1 remote-ip-addr 10.14.1.2 sid 330003 [*P2-segment-routing] quit [*P2] isis 1 [*P2-isis-1] cost-style wide [*P2-isis-1] segment-routing mpls [*P2-isis-1] quit [*P2] commit
- Configure SR-MPLS TE Policies.
# Configure PE1.
[~PE1] segment-routing [~PE1-segment-routing] segment-list pe1 [*PE1-segment-routing-segment-list-pe1] index 10 sid label 330000 [*PE1-segment-routing-segment-list-pe1] index 20 sid label 330002 [*PE1-segment-routing-segment-list-pe1] quit [*PE1-segment-routing] segment-list pe1backup [*PE1-segment-routing-segment-list-pe1backup] index 10 sid label 330001 [*PE1-segment-routing-segment-list-pe1backup] index 20 sid label 330003 [*PE1-segment-routing-segment-list-pe1backup] quit [*PE1-segment-routing] sr-te policy policy100 endpoint 3.3.3.9 color 100 [*PE1-segment-routing-te-policy-policy100] binding-sid 115 [*PE1-segment-routing-te-policy-policy100] mtu 1000 [*PE1-segment-routing-te-policy-policy100] candidate-path preference 100 [*PE1-segment-routing-te-policy-policy100-path] segment-list pe1backup [*PE1-segment-routing-te-policy-policy100-path] quit [*PE1-segment-routing-te-policy-policy100] candidate-path preference 200 [*PE1-segment-routing-te-policy-policy100-path] segment-list pe1 [*PE1-segment-routing-te-policy-policy100-path] quit [*PE1-segment-routing-te-policy-policy100] quit [*PE1-segment-routing] quit [*PE1] commit
# Configure PE2.
[~PE2] segment-routing [~PE2-segment-routing] segment-list pe2 [*PE2-segment-routing-segment-list-pe2] index 10 sid label 330000 [*PE2-segment-routing-segment-list-pe2] index 20 sid label 330003 [*PE2-segment-routing-segment-list-pe2] quit [*PE2-segment-routing] segment-list pe2backup [*PE2-segment-routing-segment-list-pe2backup] index 10 sid label 330001 [*PE2-segment-routing-segment-list-pe2backup] index 20 sid label 330002 [*PE2-segment-routing-segment-list-pe2backup] quit [*PE2-segment-routing] sr-te policy policy200 endpoint 1.1.1.9 color 200 [*PE2-segment-routing-te-policy-policy200] binding-sid 115 [*PE2-segment-routing-te-policy-policy200] mtu 1000 [*PE2-segment-routing-te-policy-policy200] candidate-path preference 100 [*PE2-segment-routing-te-policy-policy200-path] segment-list pe2backup [*PE2-segment-routing-te-policy-policy200-path] quit [*PE2-segment-routing-te-policy-policy200] candidate-path preference 200 [*PE2-segment-routing-te-policy-policy200-path] segment-list pe2 [*PE2-segment-routing-te-policy-policy200-path] quit [*PE2-segment-routing-te-policy-policy200] quit [*PE2-segment-routing] quit [*PE2] commit
After the configuration is complete, run the display sr-te policy command to check SR-MPLS TE Policy information. The following example uses the command output on PE1.
[~PE1] display sr-te policy PolicyName : policy100 Endpoint : 3.3.3.9 Color : 100 TunnelId : 1 TunnelType : SR-TE Policy Binding SID : 115 MTU : 1000 Policy State : Up State Change Time : 2019-12-20 09:17:45 Admin State : Up Traffic Statistics : Disable BFD : Disable Backup Hot-Standby : Disable DiffServ-Mode : - Candidate-path Count : 2 Candidate-path Preference: 200 Path State : Active Path Type : Primary Protocol-Origin : Configuration(30) Originator : 0, 0.0.0.0 Discriminator : 200 Binding SID : - GroupId : 2 Policy Name : policy100 Template ID : - Segment-List Count : 1 Segment-List : pe1 Segment-List ID : 129 XcIndex : 68 List State : Up BFD State : - EXP : - TTL : - DeleteTimerRemain : - Weight : 1 Label : 330000, 330002 Candidate-path Preference: 100 Path State : Inactive (Valid) Path Type : - Protocol-Origin : Configuration(30) Originator : 0, 0.0.0.0 Discriminator : 100 Binding SID : - GroupId : 1 Policy Name : policy100 Template ID : - Segment-List Count : 1 Segment-List : pe1backup Segment-List ID : 194 XcIndex : - List State : Up BFD State : - EXP : - TTL : - DeleteTimerRemain : - Weight : 1 Label : 330001, 330003
- Configure SBFD and HSB on each PE.
# Configure PE1.
[~PE1] bfd [*PE1-bfd] quit [*PE1] sbfd [*PE1-sbfd] reflector discriminator 1.1.1.9 [*PE1-sbfd] quit [*PE1] segment-routing [*PE1-segment-routing] sr-te-policy seamless-bfd enable [*PE1-segment-routing] sr-te-policy backup hot-standby enable [*PE1-segment-routing] commit [~PE1-segment-routing] quit
# Configure PE2.
[~PE2] bfd [*PE2-bfd] quit [*PE2] sbfd [*PE2-sbfd] reflector discriminator 3.3.3.9 [*PE2-sbfd] quit [*PE2] segment-routing [*PE2-segment-routing] sr-te-policy seamless-bfd enable [*PE2-segment-routing] sr-te-policy backup hot-standby enable [*PE2-segment-routing] commit [~PE2-segment-routing] quit
- Configure a route-policy on each PE.
# Configure PE1.
[~PE1] route-policy color100 permit node 1 [*PE1-route-policy] apply extcommunity color 0:100 [*PE1-route-policy] quit [*PE1] commit
# Configure PE2.
[~PE2] route-policy color200 permit node 1 [*PE2-route-policy] apply extcommunity color 0:200 [*PE2-route-policy] quit [*PE2] commit
- Establish an MP-IBGP peer relationship between PEs, apply an import route-policy to a specified VPNv6 peer on each PE, and set the Color Extended Community.
# Configure 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] peer 3.3.3.9 route-policy color100 import [*PE1-bgp-af-vpnv6] commit [~PE1-bgp-af-vpnv6] quit [~PE1-bgp] quit
# Configure 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] peer 1.1.1.9 route-policy color200 import [*PE2-bgp-af-vpnv6] commit [~PE2-bgp-af-vpnv6] quit [~PE2-bgp] quit
After the configuration is complete, run the display bgp peer or display bgp vpnv6 all peer command on each PE to check whether a BGP peer relationship has been established between the PEs. If the Established state is displayed in the command output, the BGP peer relationship has been established successfully. The following example uses the command output on PE1.
[~PE1] display bgp peer BGP local router ID : 1.1.1.9 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 2 6 0 00:00:12 Established 0 [~PE1] display bgp vpnv6 all peer BGP local router ID : 1.1.1.9 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 12 18 0 00:09:38 Established 0
- Create a VPN instance and enable the IPv6 address family on each PE. Then, bind each PE's interface connecting the PE to a CE to the corresponding VPN instance.
# Configure PE1.
[~PE1] ip vpn-instance vpna [*PE1-vpn-instance-vpna] ipv6-family [*PE1-vpn-instance-vpna-af-ipv6] route-distinguisher 100:1 [*PE1-vpn-instance-vpna-af-ipv6] vpn-target 111:1 both [*PE1-vpn-instance-vpna-af-ipv6] quit [*PE1-vpn-instance-vpna] quit [*PE1] interface gigabitethernet0/1/8 [*PE1-GigabitEthernet0/1/8] ip binding vpn-instance vpna [*PE1-GigabitEthernet0/1/8] ipv6 enable [*PE1-GigabitEthernet0/1/8] ipv6 address 2001:db8::1:2 96 [*PE1-GigabitEthernet0/1/8] quit [*PE1] commit
# Configure PE2.
[~PE2] ip vpn-instance vpna [*PE2-vpn-instance-vpna] ipv6-family [*PE2-vpn-instance-vpna-af-ipv6] route-distinguisher 200:1 [*PE2-vpn-instance-vpna-af-ipv6] vpn-target 111:1 both [*PE2-vpn-instance-vpna-af-ipv6] quit [*PE2-vpn-instance-vpna] quit [*PE2] interface gigabitethernet0/1/8 [*PE2-GigabitEthernet0/1/8] ip binding vpn-instance vpna [*PE2-GigabitEthernet0/1/8] ipv6 enable [*PE2-GigabitEthernet0/1/8] ipv6 address 2001:db8::2:2 96 [*PE2-GigabitEthernet0/1/8] quit [*PE2] commit
- Configure a tunnel policy on each PE to preferentially select an SR-MPLS TE Policy.
# Configure PE1.
[~PE1] tunnel-policy p1 [*PE1-tunnel-policy-p1] tunnel select-seq sr-te-policy load-balance-number 1 unmix [*PE1-tunnel-policy-p1] quit [*PE1] ip vpn-instance vpna [*PE1-vpn-instance-vpna] ipv6-family [*PE1-vpn-instance-vpna-af-ipv6] tnl-policy p1 [*PE1-vpn-instance-vpna-af-ipv6] quit [*PE1-vpn-instance-vpna] quit [*PE1] commit
# Configure PE2.
[~PE2] tunnel-policy p1 [*PE2-tunnel-policy-p1] tunnel select-seq sr-te-policy load-balance-number 1 unmix [*PE2-tunnel-policy-p1] quit [*PE2] ip vpn-instance vpna [*PE2-vpn-instance-vpna] ipv6-family [*PE2-vpn-instance-vpna-af-ipv6] tnl-policy p1 [*PE2-vpn-instance-vpna-af-ipv6] quit [*PE2-vpn-instance-vpna] quit [*PE2] commit
- Establish an EBGP peer relationship between each CE-PE pair.
# Configure CE1.
<HUAWEI> system-view [~HUAWEI] sysname CE1 [*HUAWEI] commit [~CE1] interface loopback 1 [*CE1-LoopBack1] ipv6 enable [*CE1-LoopBack1] ipv6 address 2001:db8::11:1 128 [*CE1-LoopBack1] quit [*CE1] interface gigabitethernet0/1/0 [*CE1-GigabitEthernet0/1/0] ipv6 enable [*CE1-GigabitEthernet0/1/0] ipv6 address 2001:db8::1:1 96 [*CE1-GigabitEthernet0/1/0] quit [*CE1] bgp 65410 [*CE1-bgp] router-id 10.10.10.10 [*CE1-bgp] peer 2001:db8::1:2 as-number 100 [*CE1-bgp] ipv6-family [*CE1-bgp-af-ipv6] network 2001:db8::11:1 128 [*CE1-bgp-af-ipv6] peer 2001:db8::1:2 enable [*CE1-bgp-af-ipv6] quit [*CE1-bgp] quit [*CE1] commit
The configuration of CE2 is similar to the configuration of CE1. For configuration details, see "Configuration Files" in this section.
After completing the configuration, run the display ip vpn-instance verbose command on each PE to check VPN instance configurations. The command output shows that each PE can ping its connected CE.
If a PE has multiple interfaces bound to the same VPN instance, use the -a source-ipv6-address parameter to specify a source IP address when running the ping ipv6 vpn-instance vpn-instance-name -a source-ipv6-address dest-ipv6-address command to ping the CE that is connected to the remote PE. If the source IP address is not specified, the ping operation may fail.
# Configure PE1.
[~PE1] bgp 100 [~PE1-bgp] ipv6-family vpn-instance vpna [*PE1-bgp-6-vpna] peer 2001:db8::1:1 as-number 65410 [*PE1-bgp-6-vpna] commit [~PE1-bgp-6-vpna] quit [~PE1-bgp] quit
The configuration of PE2 is similar to the configuration of PE1. For configuration details, see "Configuration Files" in this section.
After completing the configuration, run the display bgp vpnv6 vpn-instance peer command on each PE. The following example uses the peer relationship between PE1 and CE1. The command output shows that a BGP peer relationship has been established between the PE and CE and is in the Established state.
[~PE1] display bgp vpnv6 vpn-instance vpna peer BGP local router ID : 1.1.1.9 Local AS number : 100 Total number of peers : 1 Peers in established state : 1 VPN-Instance vpna, Router ID 1.1.1.9: Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 2001:DB8::1:1 4 65410 7 8 0 00:02:38 Established 1 - Verify the configuration.
After completing the configuration, run the display ipv6 routing-table vpn-instance command on each PE to check information about the loopback interface route toward a CE.
The following example uses the command output on PE1.
[~PE1] display ipv6 routing-table vpn-instance vpna Routing Table : vpna Destinations : 4 Routes : 4 Destination : 2001:DB8:: PrefixLength : 96 NextHop : 2001:DB8::1:2 Preference : 0 Cost : 0 Protocol : Direct RelayNextHop : :: TunnelID : 0x0 Interface : GigabitEthernet0/1/8 Flags : D Destination : 2001:DB8::1:2 PrefixLength : 128 NextHop : ::1 Preference : 0 Cost : 0 Protocol : Direct RelayNextHop : :: TunnelID : 0x0 Interface : GigabitEthernet0/1/8 Flags : D Destination : 2001:DB8::22:2 PrefixLength : 128 NextHop : ::FFFF:3.3.3.9 Preference : 255 Cost : 0 Protocol : IBGP RelayNextHop : ::FFFF:10.13.1.2 TunnelID : 0x000000002900000006 Interface : policy100 Flags : RD Destination : 2001:DB8::22:2 PrefixLength : 128 NextHop : ::FFFF:3.3.3.9 Preference : 255 Cost : 0 Protocol : IBGP RelayNextHop : ::FFFF:10.11.1.2 TunnelID : 0x000000002900000006 Interface : policy100 Flags : RD Destination : FE80:: PrefixLength : 10 NextHop : :: Preference : 0 Cost : 0 Protocol : Direct RelayNextHop : :: TunnelID : 0x0 Interface : NULL0 Flags : DB
Run the display ipv6 routing-table vpn-instance vpna verbose command on each PE to check details about the loopback interface route toward a CE.
The following example uses the command output on PE1.
[~PE1] display ipv6 routing-table vpn-instance vpna 2001:db8::22:2 verbose Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole route ------------------------------------------------------------------------------ Routing Table : vpna Summary Count : 1 Destination : 2001:DB8::22:2 PrefixLength : 128 NextHop : ::FFFF:3.3.3.9 Preference : 255 Neighbour : ::3.3.3.9 ProcessID : 0 Label : 48180 Protocol : IBGP State : Active Adv Relied Cost : 0 Entry ID : 0 EntryFlags : 0x00000000 Reference Cnt: 0 Tag : 0 Priority : low Age : 722sec IndirectID : 0x10000B8 Instance : RelayNextHop : ::FFFF:10.13.1.2 TunnelID : 0x000000002900000006 Interface : policy100 Flags : RD RelayNextHop : ::FFFF:10.11.1.2 TunnelID : 0x000000002900000006 Interface : policy100 Flags : RD
The preceding command output shows that the corresponding VPN route has successfully recursed to an SR-MPLS TE tunnel.
CEs in the same VPN can ping each other. For example, CE1 can ping CE2 at 2001:db8::22:2.
[~CE1] ping ipv6 -a 2001:db8::11:1 2001:db8::22:2 PING 2001:DB8::22:2 : 56 data bytes, press CTRL_C to break Reply from 2001:DB8::22:2 bytes=56 Sequence=1 hop limit=62 time = 170 ms Reply from 2001:DB8::22:2 bytes=56 Sequence=2 hop limit=62 time = 140 ms Reply from 2001:DB8::22:2 bytes=56 Sequence=3 hop limit=62 time = 150 ms Reply from 2001:DB8::22:2 bytes=56 Sequence=4 hop limit=62 time = 140 ms Reply from 2001:DB8::22:2 bytes=56 Sequence=5 hop limit=62 time = 170 ms --- 2001:DB8::22:2 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 140/154/170 ms
Configuration Files
PE1 configuration file
# sysname PE1 # ip vpn-instance vpna ipv6-family route-distinguisher 100:1 tnl-policy p1 vpn-target 111:1 export-extcommunity vpn-target 111:1 import-extcommunity # bfd # sbfd reflector discriminator 1.1.1.9 # mpls lsr-id 1.1.1.9 # mpls # segment-routing ipv4 adjacency local-ip-addr 10.11.1.1 remote-ip-addr 10.11.1.2 sid 330000 ipv4 adjacency local-ip-addr 10.13.1.1 remote-ip-addr 10.13.1.2 sid 330001 sr-te-policy backup hot-standby enable sr-te-policy seamless-bfd enable segment-list pe1 index 10 sid label 330000 index 20 sid label 330002 segment-list pe1backup index 10 sid label 330001 index 20 sid label 330003 sr-te policy policy100 endpoint 3.3.3.9 color 100 binding-sid 115 mtu 1000 candidate-path preference 200 segment-list pe1 candidate-path preference 100 segment-list pe1backup # isis 1 is-level level-1 cost-style wide network-entity 10.0000.0000.0001.00 segment-routing mpls # interface GigabitEthernet0/1/0 undo shutdown ip address 10.13.1.1 255.255.255.0 isis enable 1 # interface GigabitEthernet0/1/8 undo shutdown ip binding vpn-instance vpna ipv6 enable ipv6 address 2001:DB8::1:2/96 # interface GigabitEthernet0/1/16 undo shutdown ip address 10.11.1.1 255.255.255.0 isis enable 1 # 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 # ipv6-family vpnv6 policy vpn-target peer 3.3.3.9 enable peer 3.3.3.9 route-policy color100 import # ipv6-family vpn-instance vpna peer 2001:DB8::1:1 as-number 65410 # route-policy color100 permit node 1 apply extcommunity color 0:100 # tunnel-policy p1 tunnel select-seq sr-te-policy load-balance-number 1 unmix # return
P1 configuration file
# sysname P1 # mpls lsr-id 2.2.2.9 # mpls # segment-routing ipv4 adjacency local-ip-addr 10.12.1.1 remote-ip-addr 10.12.1.2 sid 330002 ipv4 adjacency local-ip-addr 10.11.1.2 remote-ip-addr 10.11.1.1 sid 330003 # isis 1 is-level level-1 cost-style wide network-entity 10.0000.0000.0002.00 segment-routing mpls # interface GigabitEthernet0/1/0 undo shutdown ip address 10.11.1.2 255.255.255.0 isis enable 1 # interface GigabitEthernet0/1/8 undo shutdown ip address 10.12.1.1 255.255.255.0 isis enable 1 # interface LoopBack1 ip address 2.2.2.9 255.255.255.255 isis enable 1 # return
PE2 configuration file
# sysname PE2 # ip vpn-instance vpna ipv6-family route-distinguisher 200:1 tnl-policy p1 vpn-target 111:1 export-extcommunity vpn-target 111:1 import-extcommunity # bfd # sbfd reflector discriminator 3.3.3.9 # mpls lsr-id 3.3.3.9 # mpls # segment-routing ipv4 adjacency local-ip-addr 10.12.1.2 remote-ip-addr 10.12.1.1 sid 330000 ipv4 adjacency local-ip-addr 10.14.1.2 remote-ip-addr 10.14.1.1 sid 330001 sr-te-policy backup hot-standby enable sr-te-policy seamless-bfd enable segment-list pe2 index 10 sid label 330000 index 20 sid label 330003 segment-list pe2backup index 10 sid label 330001 index 20 sid label 330002 sr-te policy policy200 endpoint 1.1.1.9 color 200 binding-sid 115 mtu 1000 candidate-path preference 200 segment-list pe2 candidate-path preference 100 segment-list pe2backup # isis 1 is-level level-1 cost-style wide network-entity 10.0000.0000.0003.00 segment-routing mpls # interface GigabitEthernet0/1/0 undo shutdown ip address 10.14.1.2 255.255.255.0 isis enable 1 # interface GigabitEthernet0/1/8 undo shutdown ip binding vpn-instance vpna ipv6 enable ipv6 address 2001:DB8::2:2/96 # interface GigabitEthernet0/1/16 undo shutdown ip address 10.12.1.2 255.255.255.0 isis enable 1 # 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 # ipv6-family vpnv6 policy vpn-target peer 1.1.1.9 enable peer 1.1.1.9 route-policy color200 import # ipv6-family vpn-instance vpna peer 2001:DB8::2:1 as-number 65420 # route-policy color200 permit node 1 apply extcommunity color 0:200 # tunnel-policy p1 tunnel select-seq sr-te-policy load-balance-number 1 unmix # return
P2 configuration file
# sysname P2 # mpls lsr-id 4.4.4.9 # mpls # segment-routing ipv4 adjacency local-ip-addr 10.13.1.2 remote-ip-addr 10.13.1.1 sid 330002 ipv4 adjacency local-ip-addr 10.14.1.1 remote-ip-addr 10.14.1.2 sid 330003 # isis 1 is-level level-1 cost-style wide network-entity 10.0000.0000.0004.00 segment-routing mpls # interface GigabitEthernet0/1/0 undo shutdown ip address 10.13.1.2 255.255.255.0 isis enable 1 # interface GigabitEthernet0/1/8 undo shutdown ip address 10.14.1.1 255.255.255.0 isis enable 1 # interface LoopBack1 ip address 4.4.4.9 255.255.255.255 isis enable 1 # return
CE1 configuration file
# sysname CE1 # interface GigabitEthernet0/1/0 undo shutdown ipv6 enable ipv6 address 2001:DB8::1:1/96 # interface LoopBack1 ipv6 enable ipv6 address 2001:DB8::11:1/128 # bgp 65410 router-id 10.10.10.10 peer 2001:DB8::1:2 as-number 100 # ipv6-family unicast undo synchronization network 2001:DB8::11:1 128 peer 2001:DB8::1:2 enable # returnCE2 configuration file
# sysname CE2 # interface GigabitEthernet0/1/0 undo shutdown ipv6 enable ipv6 address 2001:DB8::2:1/96 # interface LoopBack1 ipv6 enable ipv6 address 2001:DB8::22:2/128 # bgp 65420 router-id 10.20.20.20 peer 2001:DB8::2:2 as-number 100 # ipv6-family unicast undo synchronization network 2001:DB8::22:2 128 peer 2001:DB8::2:2 enable # return