Example for Configuring Public IPv4 over SRv6 TE Policy
This section provides an example for configuring an SRv6 TE Policy to carry public network IPv4 services.
Networking Requirements
On the network shown in Figure 1, PE1, the P, and PE2 belong to the same AS and need to run IS-IS to implement IPv6 network connectivity. PE1, the P, and PE2 are Level-1 devices that belong to IS-IS process 1. An IBGP peer relationship needs to be established between PE1 and PE2, and EBGP peer relationships need to be established between PE1 and DeviceA and between PE2 and DeviceB.
It is required that a bidirectional SRv6 TE Policy be established between PE1 and PE2 to carry public network IPv4 services.
Configuration Roadmap
The configuration roadmap is as follows:
Enable IPv6 forwarding and configure an IPv6 address for each interface on PE1, the P, and PE2.
Enable IS-IS, configure an IS-IS level, and specify a network entity title (NET) on PE1, the P, and PE2.
Establish an EBGP peer relationship between PE1 and DeviceA and another one between PE2 and DeviceB.
Establish an MP-IBGP peer relationship between the PEs.
Deploy an SRv6 TE Policy between PE1 and PE2, and enable IS-IS SRv6.
Data Preparation
To complete the configuration, you need the following data:
IPv6 address of each interface on PE1, the P, and PE2
IS-IS process ID of PE1, the P, and PE2
IS-IS level of PE1, the P, and PE2
Procedure
- Enable IPv6 forwarding and configure an IPv6 address for each interface. The following example uses the configuration of PE1. The configurations of other devices are similar to the configuration of PE1. For configuration details, see Configuration Files in this section.
<HUAWEI> system-view [~HUAWEI] sysname PE1 [*HUAWEI] commit [~PE1] interface gigabitethernet 0/1/0 [~PE1-GigabitEthernet0/1/0] ipv6 enable [*PE1-GigabitEthernet0/1/0] ipv6 address 2001:DB8:10::1 96 [*PE1-GigabitEthernet0/1/0] quit [*PE1] interface loopback1 [*PE1-LoopBack1] ipv6 enable [*PE1-LoopBack1] ipv6 address 2001:DB8:1::1 128 [*PE1-LoopBack1] commit [~PE1-LoopBack1] quit
- Configure IS-IS.
# Configure PE1.
[~PE1] isis 1 [*PE1-isis-1] is-level level-1 [*PE1-isis-1] cost-style wide [*PE1-isis-1] network-entity 10.0000.0000.0001.00 [*PE1-isis-1] ipv6 enable topology ipv6 [*PE1-isis-1] quit [*PE1] interface gigabitethernet 0/1/0 [*PE1-GigabitEthernet0/1/0] isis ipv6 enable 1 [*PE1-GigabitEthernet0/1/0] quit [*PE1] interface loopback1 [*PE1-LoopBack1] isis ipv6 enable 1 [*PE1-LoopBack1] commit [~PE1-LoopBack1] quit
# Configure the P.
[~P] isis 1 [*P-isis-1] is-level level-1 [*P-isis-1] cost-style wide [*P-isis-1] network-entity 10.0000.0000.0002.00 [*P-isis-1] ipv6 enable topology ipv6 [*P-isis-1] quit [*P] interface gigabitethernet 0/1/0 [*P-GigabitEthernet0/1/0] isis ipv6 enable 1 [*P-GigabitEthernet0/1/0] quit [*P] interface gigabitethernet 0/1/8 [*P-GigabitEthernet0/1/8] isis ipv6 enable 1 [*P-GigabitEthernet0/1/8] quit [*P] interface loopback1 [*P-LoopBack1] isis ipv6 enable 1 [*P-LoopBack1] commit [~P-LoopBack1] quit
# Configure PE2.
[~PE2] isis 1 [*PE2-isis-1] is-level level-1 [*PE2-isis-1] cost-style wide [*PE2-isis-1] network-entity 10.0000.0000.0003.00 [*PE2-isis-1] ipv6 enable topology ipv6 [*PE2-isis-1] quit [*PE2] interface gigabitethernet 0/1/0 [*PE2-GigabitEthernet0/1/0] isis ipv6 enable 1 [*PE2-GigabitEthernet0/1/0] quit [*PE2] interface loopback1 [*PE2-LoopBack1] isis ipv6 enable 1 [*PE2-LoopBack1] commit [~PE2-LoopBack1] quit
After the configuration is complete, perform the following operations to check whether IS-IS is successfully configured:
# Display IS-IS neighbor information. The following example uses the command output on PE1.
[~PE1] display isis peer Peer information for ISIS(1) System Id Interface Circuit Id State HoldTime Type PRI -------------------------------------------------------------------------------- 0000.0000.0002 GE0/1/0 0000.0000.0002.01 Up 8s L1 64 Total Peer(s): 1
# Display IS-IS routing table information. The following example uses the command output on PE1.
[~PE1] display isis route Route information for ISIS(1) ----------------------------- ISIS(1) Level-1 Forwarding Table -------------------------------- IPV6 Dest. ExitInterface NextHop Cost Flags -------------------------------------------------------------------------------- 2001:DB8:1::1/128 Loop1 Direct 0 D/-/L/- 2001:DB8:2::2/128 GE0/1/0 FE80::3A92:6CFF:FE21:10 10 A/-/-/- 2001:DB8:3::3/128 GE0/1/0 FE80::3A92:6CFF:FE21:10 20 A/-/-/- 2001:DB8:10::/96 GE0/1/0 Direct 10 D/-/L/- 2001:DB8:20::/96 GE0/1/0 FE80::3A92:6CFF:FE21:10 20 A/-/-/- Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut, U-Up/Down Bit Set, LP-Local Prefix-Sid Protect Type: L-Link Protect, N-Node Protect
- Establish an EBGP peer relationship between PE1 and DeviceA and another one between PE2 and DeviceB.
# Configure DeviceA.
[~DeviceA] interface gigabitethernet 0/1/0 [~DeviceA-GigabitEthernet0/1/0] ip address 192.168.1.1 24 [*DeviceA-GigabitEthernet0/1/0] quit [*DeviceA] bgp 200 [*DeviceA-bgp] router-id 4.4.4.4 [*DeviceA-bgp] peer 192.168.1.2 as-number 100 [*DeviceA-bgp] quit [*DeviceA] commit
# Configure PE1.
[~PE1] interface gigabitethernet 0/1/8 [~PE1-GigabitEthernet0/1/8] ip address 192.168.1.2 24 [*PE1-GigabitEthernet0/1/8] quit [*PE1] bgp 100 [*PE1-bgp] router-id 1.1.1.1 [*PE1-bgp] peer 192.168.1.1 as-number 200 [*PE1-bgp] ipv4-family unicast [*PE1-bgp-af-ipv4] peer 192.168.1.1 enable [*PE1-bgp-af-ipv4] network 192.168.1.0 24 [*PE1-bgp-af-ipv4] commit [~PE1-bgp-af-ipv4] quit [~PE1-bgp] quit
# Configure DeviceB.
[~DeviceB] interface gigabitethernet 0/1/0 [~DeviceB-GigabitEthernet0/1/0] ip address 192.168.2.1 24 [*DeviceB-GigabitEthernet0/1/0] quit [*DeviceB] bgp 300 [*DeviceB-bgp] router-id 5.5.5.5 [*DeviceB-bgp] peer 192.168.2.2 as-number 100 [*DeviceB-bgp] quit [*DeviceB] commit
# Configure PE2.
[~PE2] interface gigabitethernet 0/1/8 [~PE2-GigabitEthernet0/1/8] ip address 192.168.2.2 24 [*PE2-GigabitEthernet0/1/8] quit [*PE2] bgp 100 [*PE2-bgp] router-id 2.2.2.2 [*PE2-bgp] peer 192.168.2.1 as-number 300 [*PE2-bgp] ipv4-family unicast [*PE2-bgp-af-ipv4] peer 192.168.2.1 enable [*PE2-bgp-af-ipv4] network 192.168.2.0 24 [*PE2-bgp-af-ipv4] commit [~PE2-bgp-af-ipv4] quit [~PE2-bgp] quit
After the configuration is complete, run the display bgp peer command on the PEs to check whether the BGP peer relationships have been established. If the Established state is displayed in the command output, the BGP peer relationships have been established successfully.
The following example uses the command output on PE1 to show that a BGP peer relationship has been established between PE1 and DeviceA.
[~PE1] display bgp peer BGP local router ID : 1.1.1.1 Local AS number : 100 Total number of peers : 1 Peers in established state : 1 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 192.168.1.1 4 200 1624 1622 0 00:06:37 Established 1 - Establish an MP-IBGP peer relationship between the PEs.
# Configure PE1.
[~PE1] bgp 100 [~PE1-bgp] peer 2001:DB8:3::3 as-number 100 [*PE1-bgp] peer 2001:DB8:3::3 connect-interface loopback1 [*PE1-bgp] ipv4-family unicast [*PE1-bgp-af-ipv4] peer 2001:DB8:3::3 enable [*PE1-bgp-af-ipv4] peer 2001:DB8:3::3 next-hop-local [*PE1-bgp-af-ipv4] commit [~PE1-bgp-af-ipv4] quit [~PE1-bgp] quit
# Configure PE2.
[~PE2] bgp 100 [~PE2-bgp] peer 2001:DB8:1::1 as-number 100 [*PE2-bgp] peer 2001:DB8:1::1 connect-interface loopback1 [*PE2-bgp] ipv4-family unicast [*PE2-bgp-af-ipv4] peer 2001:DB8:1::1 enable [*PE2-bgp-af-ipv4] peer 2001:DB8:1::1 next-hop-local [*PE2-bgp-af-ipv4] commit [~PE2-bgp-af-ipv4] quit [~PE2-bgp] quit
After the configuration is complete, run the display bgp peer command on the PEs to check whether the BGP peer relationship has been established. 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 : 1.1.1.1 Local AS number : 100 Total number of peers : 2 Peers in established state : 2 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 192.168.1.1 4 200 10 11 0 00:05:15 Established 2 2001:DB8:3::3 4 100 10 11 0 00:05:15 Established 2
- Configure each PE to carry color and SID attributes in public network routes to be advertised.
An End.DT4 SID can be either dynamically allocated through BGP or manually configured. If a dynamically allocated SID and a manually configured SID both exist, the latter takes effect. If dynamic End.DT4 SID allocation through BGP has been enabled using the segment-routing ipv6 locator locator-name command, you do not need to run the opcode func-opcode end-dt4 command to configure a static SID opcode.
In this example, SIDs are dynamically allocated through BGP.
# Configure PE1.
[~PE1] segment-routing ipv6 [*PE1-segment-routing-ipv6] encapsulation source-address 2001:DB8:1::1 [*PE1-segment-routing-ipv6] locator aa ipv6-prefix 2001:DB8:100:: 64 static 32 [*PE1-segment-routing-ipv6-locator] opcode ::100 end psp [*PE1-segment-routing-ipv6-locator] quit [*PE1-segment-routing-ipv6] quit [*PE1] isis 1 [*PE1-isis-1] segment-routing ipv6 locator aa [*PE1-isis-1] quit [*PE1] route-policy color permit node 10 [*PE1-route-policy] apply extcommunity color 0:101 [*PE1-route-policy] quit [*PE1] bgp 100 [*PE1-bgp] ipv4-family unicast [*PE1-bgp-af-ipv4] peer 2001:DB8:3::3 route-policy color export [*PE1-bgp-af-ipv4] peer 2001:DB8:3::3 advertise-ext-community [*PE1-bgp-af-ipv4] peer 2001:DB8:3::3 prefix-sid [*PE1-bgp-af-ipv4] segment-routing ipv6 locator aa [*PE1-bgp-af-ipv4] commit [~PE1-bgp-af-ipv4] quit [~PE1-bgp] quit
# Configure the P.
[~P] segment-routing ipv6 [*P-segment-routing-ipv6] encapsulation source-address 2001:DB8:2::2 [*P-segment-routing-ipv6] locator aa ipv6-prefix 2001:DB8:200:: 64 static 32 [*P-segment-routing-ipv6-locator] opcode ::100 end psp [*P-segment-routing-ipv6-locator] quit [*P-segment-routing-ipv6] quit [*P] isis 1 [*P-isis-1] segment-routing ipv6 locator aa [*P-isis-1] commit [~P-isis-1] quit
# Configure PE2.
[~PE2] segment-routing ipv6 [*PE2-segment-routing-ipv6] encapsulation source-address 2001:DB8:3::3 [*PE2-segment-routing-ipv6] locator aa ipv6-prefix 2001:DB8:300:: 64 static 32 [*PE2-segment-routing-ipv6-locator] opcode ::100 end psp [*PE2-segment-routing-ipv6-locator] quit [*PE2-segment-routing-ipv6] quit [*PE2] isis 1 [*PE2-isis-1] segment-routing ipv6 locator aa [*PE2-isis-1] quit [*PE2] route-policy color permit node 10 [*PE2-route-policy] apply extcommunity color 0:101 [*PE2-route-policy] quit [*PE2] bgp 100 [*PE2-bgp] ipv4-family unicast [*PE2-bgp-af-ipv4] peer 2001:DB8:1::1 route-policy color export [*PE2-bgp-af-ipv4] peer 2001:DB8:1::1 advertise-ext-community [*PE2-bgp-af-ipv4] peer 2001:DB8:1::1 prefix-sid [*PE2-bgp-af-ipv4] segment-routing ipv6 locator aa [*PE2-bgp-af-ipv4] commit [~PE2-bgp-af-ipv4] quit [~PE2-bgp] quit
Run the display segment-routing ipv6 local-sid end forwarding command to check information about the SRv6 local SID table.
[~PE1] display segment-routing ipv6 local-sid end forwarding My Local-SID End Forwarding Table --------------------------------- SID : 2001:DB8:100::100/128 FuncType : End Flavor : PSP LocatorName : aa LocatorID : 2 ProtocolType: STATIC ProcessID : -- UpdateTime : 2021-08-30 03:57:38.782 SID : 2001:DB8:100::1:0:1/128 FuncType : End Flavor : NO-FLAVOR LocatorName : aa LocatorID : 2 ProtocolType: ISIS ProcessID : 1 UpdateTime : 2021-08-30 04:02:38.500 SID : 2001:DB8:100::1:0:2/128 FuncType : End Flavor : PSP USP USD LocatorName : aa LocatorID : 2 ProtocolType: ISIS ProcessID : 1 UpdateTime : 2021-08-30 04:02:38.500 Total SID(s): 3 [~P] display segment-routing ipv6 local-sid end forwarding My Local-SID End Forwarding Table --------------------------------- SID : 2001:DB8:200::100/128 FuncType : End Flavor : PSP LocatorName : aa LocatorID : 1 ProtocolType: STATIC ProcessID : -- UpdateTime : 2021-08-30 03:58:56.659 SID : 2001:DB8:200::1:0:0/128 FuncType : End Flavor : NO-FLAVOR LocatorName : aa LocatorID : 1 ProtocolType: ISIS ProcessID : 1 UpdateTime : 2021-08-30 03:58:58.649 SID : 2001:DB8:200::1:0:1/128 FuncType : End Flavor : PSP USP USD LocatorName : aa LocatorID : 1 ProtocolType: ISIS ProcessID : 1 UpdateTime : 2021-08-30 03:58:58.649 Total SID(s): 3 [~PE2] display segment-routing ipv6 local-sid end forwarding My Local-SID End Forwarding Table --------------------------------- SID : 2001:DB8:300::100/128 FuncType : End Flavor : PSP LocatorName : aa LocatorID : 1 ProtocolType: STATIC ProcessID : -- UpdateTime : 2021-08-30 03:58:57.124 SID : 2001:DB8:300::1:0:0/128 FuncType : End Flavor : NO-FLAVOR LocatorName : aa LocatorID : 1 ProtocolType: ISIS ProcessID : 1 UpdateTime : 2021-08-30 03:58:57.723 SID : 2001:DB8:300::1:0:1/128 FuncType : End Flavor : PSP USP USD LocatorName : aa LocatorID : 1 ProtocolType: ISIS ProcessID : 1 UpdateTime : 2021-08-30 03:58:58.236 Total SID(s): 3
Run the display segment-routing ipv6 local-sid end-dt4 forwarding command to check information about the SRv6 local SID table. The following example uses the command output on PE1.
[~PE1] display segment-routing ipv6 local-sid end-dt4 forwarding My Local-SID End.DT4 Forwarding Table ------------------------------------- SID : 2001:DB8:100::1:0:3C/128 FuncType : End.DT4 VPN Name : _public_ VPN ID : 0 LocatorName: aa LocatorID: 1 Total SID(s): 1Run the display bgp routing-table command to check information about the BGP routing table. The following example uses the command output on PE2.
[~PE2] display bgp routing-table 192.168.1.0 BGP local router ID : 2.2.2.2 Local AS number : 100 Paths: 1 available, 1 best, 1 select, 0 best-external, 0 add-path BGP routing table entry information of 192.168.1.0/24: From: 2001:DB8:1::1 (1.1.1.1) Route Duration: 2d02h11m33s Relay IP Nexthop: FE80::3ABD:6CFF:FE31:300 Relay IP Out-Interface: GigabitEthernet0/1/0 Relay Tunnel Out-Interface: Original nexthop: 2001:DB8:1::1 Qos information : 0x0 Ext-Community: Color <0 : 101> Prefix-sid: 2001:DB8:100::1:0:3C AS-path Nil, origin igp, MED 0, localpref 100, pref-val 0, valid, internal, best, select, pre 255 Advertised to such 1 peers: 192.168.2.1
- Configure an SRv6 TE Policy.
# Configure PE1.
[~PE1] segment-routing ipv6 [~PE1-segment-routing-ipv6] segment-list list1 [*PE1-segment-routing-ipv6-segment-list-list1] index 5 sid ipv6 2001:DB8:200::100 [*PE1-segment-routing-ipv6-segment-list-list1] index 10 sid ipv6 2001:DB8:300::100 [*PE1-segment-routing-ipv6-segment-list-list1] quit [*PE1-segment-routing-ipv6] srv6-te policy policy1 endpoint 2001:DB8:3::3 color 101 [*PE1-segment-routing-ipv6-policy-policy1] candidate-path preference 100 [*PE1-segment-routing-ipv6-policy-policy1-path] segment-list list1 [*PE1-segment-routing-ipv6-policy-policy1-path] commit [~PE1-segment-routing-ipv6-policy-policy1-path] quit [~PE1-segment-routing-ipv6-policy-policy1] quit [~PE1-segment-routing-ipv6] quit
# Configure PE2.
[~PE2] segment-routing ipv6 [~PE2-segment-routing-ipv6] segment-list list1 [*PE2-segment-routing-ipv6-segment-list-list1] index 5 sid ipv6 2001:DB8:200::100 [*PE2-segment-routing-ipv6-segment-list-list1] index 10 sid ipv6 2001:DB8:100::100 [*PE2-segment-routing-ipv6-segment-list-list1] quit [*PE2-segment-routing-ipv6] srv6-te policy policy1 endpoint 2001:DB8:1::1 color 101 [*PE2-segment-routing-ipv6-policy-policy1] candidate-path preference 100 [*PE2-segment-routing-ipv6-policy-policy1-path] segment-list list1 [*PE2-segment-routing-ipv6-policy-policy1-path] commit [~PE2-segment-routing-ipv6-policy-policy1-path] quit [~PE2-segment-routing-ipv6-policy-policy1] quit [~PE2-segment-routing-ipv6] quit
Run the display srv6-te policy command to check SRv6 TE Policy information. The following example uses the command output on PE1.
[~PE1] display srv6-te policy PolicyName : policy1 Color : 101 Endpoint : 2001:DB8:3::3 TunnelId : 1 Binding SID : - TunnelType : SRv6-TE Policy DelayTimerRemain : - Policy State : Up State Change Time : 2021-03-25 13:13:36 Admin State : Up Traffic Statistics : Disable Backup Hot-Standby : Disable BFD : Disable Interface Index : - Interface Name : - Interface State : - Encapsulation Mode : Insert Candidate-path Count : 1 Candidate-path Preference : 100 Path State : Active Path Type : Primary Protocol-Origin : Configuration(30) Originator : 0, 0.0.0.0 Discriminator : 100 Binding SID : - GroupId : 1 Policy Name : policy1 Template ID : 0 Path Verification : Disable DelayTimerRemain : - Segment-List Count : 1 Segment-List : list1 Segment-List ID : 2 XcIndex : 2 List State : Up DelayTimerRemain : - Verification State : - SuppressTimeRemain : - PMTU : 9600 Active PMTU : 9600 Weight : 1 BFD State : - SID : 2001:DB8:200::100 2001:DB8:300::100 - Configure a tunnel policy for public network traffic import.
# Configure PE1.
[~PE1] tunnel-policy p1 [*PE1-tunnel-policy-p1] tunnel select-seq ipv6 srv6-te-policy load-balance-number 1 [*PE1-tunnel-policy-p1] quit [*PE1] tunnel-selector p1 permit node 1 [*PE1-tunnel-selector] apply tunnel-policy p1 [*PE1-tunnel-selector] quit [*PE1] bgp 100 [*PE1-bgp] ipv4-family unicast [*PE1-bgp-af-ipv4] unicast-route recursive-lookup tunnel-v6 tunnel-selector p1 [*PE1-bgp-af-ipv4] segment-routing ipv6 traffic-engineer [*PE1-bgp-af-ipv4] commit [~PE1-bgp-af-ipv4] quit [~PE1-bgp] quit
# Configure PE2.
[~PE2] tunnel-policy p1 [*PE2-tunnel-policy-p1] tunnel select-seq ipv6 srv6-te-policy load-balance-number 1 [*PE2-tunnel-policy-p1] quit [*PE2] tunnel-selector p1 permit node 1 [*PE2-tunnel-selector] apply tunnel-policy p1 [*PE2-tunnel-selector] quit [*PE2] bgp 100 [*PE2-bgp] ipv4-family unicast [*PE2-bgp-af-ipv4] unicast-route recursive-lookup tunnel-v6 tunnel-selector p1 [*PE2-bgp-af-ipv4] segment-routing ipv6 traffic-engineer [*PE2-bgp-af-ipv4] commit [~PE2-bgp-af-ipv4] quit [~PE2-bgp] quit
After the configuration is complete, run the display bgp routing-table command to check information about the BGP routing table. The following example uses the command output on PE2.
[~PE2] display bgp routing-table 192.168.1.0 BGP local router ID : 2.2.2.2 Local AS number : 100 Paths: 1 available, 1 best, 1 select, 0 best-external, 0 add-path BGP routing table entry information of 192.168.1.0/24: From: 2001:DB8:1::1 (1.1.1.1) Route Duration: 0d00h39m53s Relay IP Nexthop: FE80::3A83:DEFF:FE21:301 Relay IP Out-Interface: GigabitEthernet0/1/0 Relay Tunnel Out-Interface: policy1(srv6tepolicy) Original nexthop: 2001:DB8:1::1 Qos information : 0x0 Ext-Community: Color <0 : 101> Prefix-sid: 2001:DB8:100::1:0:3C AS-path Nil, origin igp, MED 0, localpref 100, pref-val 0, valid, internal, best, select, pre 255 Advertised to such 1 peers: 192.168.2.1
Run the display ip routing-table command to check IP routing table information. The command output shows that the public network IPv4 route has successfully recursed to the SRv6 TE Policy.
The following example uses the command output on PE1.
[~PE1] display ip routing-table Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole route ------------------------------------------------------------------------------ Routing Table : _public_ Destinations : 4 Routes : 4 Destination/Mask Proto Pre Cost Flags NextHop Interface 192.168.1.0/24 Direct 0 0 D 192.168.1.2 GigabitEthernet0/1/8 192.168.1.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/1/8 192.168.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/1/8 192.168.2.0/24 IBGP 255 0 RD 2001:DB8:3::3 policy1Check that DeviceA and DeviceB can ping each other. The following example uses the command output on DeviceA.
[~DeviceA] ping -a 192.168.1.1 192.168.2.1 PING 192.168.2.1: 56 data bytes, press CTRL_C to break Reply from 192.168.2.1: bytes=56 Sequence=1 ttl=253 time=19 ms Reply from 192.168.2.1: bytes=56 Sequence=2 ttl=253 time=18 ms Reply from 192.168.2.1: bytes=56 Sequence=3 ttl=253 time=19 ms Reply from 192.168.2.1: bytes=56 Sequence=4 ttl=253 time=20 ms Reply from 192.168.2.1: bytes=56 Sequence=5 ttl=253 time=22 ms --- 192.168.2.1 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 18/19/22 ms
Configuration Files
PE1 configuration file
# sysname PE1 # tunnel-selector p1 permit node 1 apply tunnel-policy p1 # segment-routing ipv6 encapsulation source-address 2001:DB8:1::1 locator aa ipv6-prefix 2001:DB8:100:: 64 static 32 opcode ::100 end psp segment-list list1 index 5 sid ipv6 2001:DB8:200::100 index 10 sid ipv6 2001:DB8:300::100 srv6-te policy policy1 endpoint 2001:DB8:3::3 color 101 candidate-path preference 100 segment-list list1 # isis 1 is-level level-1 cost-style wide network-entity 10.0000.0000.0001.00 # ipv6 enable topology ipv6 segment-routing ipv6 locator aa # # interface GigabitEthernet0/1/0 undo shutdown ipv6 enable ipv6 address 2001:DB8:10::1/96 isis ipv6 enable 1 # interface GigabitEthernet0/1/8 undo shutdown ip address 192.168.1.2 255.255.255.0 # interface LoopBack1 ipv6 enable ipv6 address 2001:DB8:1::1/128 isis ipv6 enable 1 # bgp 100 router-id 1.1.1.1 peer 192.168.1.1 as-number 200 peer 2001:DB8:3::3 as-number 100 peer 2001:DB8:3::3 connect-interface LoopBack1 # ipv4-family unicast undo synchronization network 192.168.1.0 255.255.255.0 unicast-route recursive-lookup tunnel-v6 tunnel-selector p1 segment-routing ipv6 locator aa segment-routing ipv6 traffic-engineer peer 192.168.1.1 enable peer 2001:DB8:3::3 enable peer 2001:DB8:3::3 next-hop-local peer 2001:DB8:3::3 route-policy color export peer 2001:DB8:3::3 advertise-ext-community peer 2001:DB8:3::3 prefix-sid # route-policy color permit node 10 apply extcommunity color 0:101 # tunnel-policy p1 tunnel select-seq ipv6 srv6-te-policy load-balance-number 1 # return
P configuration file
# sysname P # segment-routing ipv6 encapsulation source-address 2001:DB8:2::2 locator aa ipv6-prefix 2001:DB8:200:: 64 static 32 opcode ::100 end psp # isis 1 is-level level-1 cost-style wide network-entity 10.0000.0000.0002.00 # ipv6 enable topology ipv6 segment-routing ipv6 locator aa # # interface GigabitEthernet0/1/0 undo shutdown ipv6 enable ipv6 address 2001:DB8:10::2/96 isis ipv6 enable 1 # interface GigabitEthernet0/1/8 undo shutdown ipv6 enable ipv6 address 2001:DB8:20::1/96 isis ipv6 enable 1 # interface LoopBack1 ipv6 enable ipv6 address 2001:DB8:2::2/128 isis ipv6 enable 1 # return
PE2 configuration file
# sysname PE2 # tunnel-selector p1 permit node 1 apply tunnel-policy p1 # segment-routing ipv6 encapsulation source-address 2001:DB8:3::3 locator aa ipv6-prefix 2001:DB8:300:: 64 static 32 opcode ::100 end psp segment-list list1 index 5 sid ipv6 2001:DB8:200::100 index 10 sid ipv6 2001:DB8:100::100 srv6-te policy policy1 endpoint 2001:DB8:1::1 color 101 candidate-path preference 100 segment-list list1 # isis 1 is-level level-1 cost-style wide network-entity 10.0000.0000.0003.00 # ipv6 enable topology ipv6 segment-routing ipv6 locator aa # # interface GigabitEthernet0/1/0 undo shutdown ipv6 enable ipv6 address 2001:DB8:20::2/96 isis ipv6 enable 1 # interface GigabitEthernet0/1/8 undo shutdown ip address 192.168.2.2 255.255.255.0 # interface LoopBack1 ipv6 enable ipv6 address 2001:DB8:3::3/128 isis ipv6 enable 1 # bgp 100 router-id 2.2.2.2 peer 192.168.2.1 as-number 300 peer 2001:DB8:1::1 as-number 100 peer 2001:DB8:1::1 connect-interface LoopBack1 # ipv4-family unicast undo synchronization network 192.168.2.0 255.255.255.0 unicast-route recursive-lookup tunnel-v6 tunnel-selector p1 segment-routing ipv6 locator aa segment-routing ipv6 traffic-engineer peer 192.168.2.1 enable peer 2001:DB8:1::1 enable peer 2001:DB8:1::1 next-hop-local peer 2001:DB8:1::1 route-policy color export peer 2001:DB8:1::1 advertise-ext-community peer 2001:DB8:1::1 prefix-sid # route-policy color permit node 10 apply extcommunity color 0:101 # tunnel-policy p1 tunnel select-seq ipv6 srv6-te-policy load-balance-number 1 # return
DeviceA configuration file
# sysname DeviceA # interface GigabitEthernet0/1/0 undo shutdown ip address 192.168.1.1 255.255.255.0 # bgp 200 router-id 4.4.4.4 peer 192.168.1.2 as-number 100 # ipv4-family unicast undo synchronization peer 192.168.1.2 enable # returnDeviceB configuration file
# sysname DeviceB # interface GigabitEthernet0/1/0 undo shutdown ip address 192.168.2.1 255.255.255.0 # bgp 300 router-id 5.5.5.5 peer 192.168.2.2 as-number 100 # ipv4-family unicast undo synchronization peer 192.168.2.2 enable # return