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华为运营商级路由器配置示例 | L3VdPdNdv4 over SRv6 TE Policy（静态配置）

配置静态华为示例路由器运营商 Over policy

2023-09-14 09:09:07 时间

组网需求

如图1所示：

路由器PE1、P和PE2属于同一自治系统，要求它们之间通过IS-IS协议达到IPv6网络互连的目的。
PE1、P和PE2属于IS-IS进程1，都是Level-1设备。

要求在PE1和PE2之间建立双向SRv6 TE Policy，承载L3VPNv4业务。

图1 配置L3VPNv4 over SRv6 TE Policy组网图

配置思路

使能PE1、P和PE2各接口的IPv6转发能力，配置各接口的IPv6地址。
在PE1、P和PE2上使能IS-IS，配置Level级别，指定网络实体。
在PE1和PE2上配置VPN实例。
在PE和CE之间建立EBGP对等体关系。
在PE之间建立MP-IBGP对等体关系。
在PE1、P和PE2上配置SRv6 SID，配置IS-IS的SRv6能力。同时在PE1和PE2上配置VPN私网路由携带SID属性。
在PE1和PE2上配置SRv6 TE Policy。
在PE1和PE2上配置隧道策略，引入私网流量。

操作步骤

1.使能各接口的IPv6转发能力，配置各接口的IPv6地址

# 配置PE1。P和PE2的配置过程与PE1类似，不再赘述，详情可参考配置文件。

<HUAWEI> system-view
[~HUAWEI] sysname PE1
[*HUAWEI] commit
[~PE1] interface gigabitethernet 1/0/0
[~PE1-GigabitEthernet1/0/0] ipv6 enable
[*PE1-GigabitEthernet1/0/0] ipv6 address 2001:DB8:10::1 96
[*PE1-GigabitEthernet1/0/0] quit
[*PE1] interface LoopBack 1
[*PE1-LoopBack1] ipv6 enable
[*PE1-LoopBack1] ipv6 address 2001:DB8:1::1 128
[*PE1-LoopBack1] quit
[*PE1] commit

2.配置IS-IS

# 配置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 1/0/0
[*PE1-GigabitEthernet1/0/0] isis ipv6 enable 1
[*PE1-GigabitEthernet1/0/0] quit
[*PE1] interface loopback1
[*PE1-LoopBack1] isis ipv6 enable 1
[*PE1-LoopBack1] commit
[~PE1-LoopBack1] quit

# 配置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 1/0/0
[*P-GigabitEthernet1/0/0] isis ipv6 enable 1
[*P-GigabitEthernet1/0/0] quit
[*P] interface gigabitethernet 2/0/0
[*P-GigabitEthernet2/0/0] isis ipv6 enable 1
[*P-GigabitEthernet2/0/0] quit
[*P] interface loopback1
[*P-LoopBack1] isis ipv6 enable 1
[*P-LoopBack1] commit
[~P-LoopBack1] quit

# 配置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 1/0/0
[*PE2-GigabitEthernet1/0/0] isis ipv6 enable 1
[*PE2-GigabitEthernet1/0/0] quit
[*PE2] interface loopback1
[*PE2-LoopBack1] isis ipv6 enable 1
[*PE2-LoopBack1] commit
[~PE2-LoopBack1] quit

配置完成后，可按如下指导检查IS-IS是否配置成功。

# 显示IS-IS邻居信息。以PE1为例。

[~PE1] display isis peer

                          Peer information for ISIS(1)
                         
  System Id     Interface          Circuit Id        State HoldTime Type     PRI
--------------------------------------------------------------------------------
0000.0000.0002* GE1/0/0            0000.0000.0002.01  Up   8s       L1       64 

Total Peer(s): 1

# 显示IS-IS路由表信息。以PE1为例。

[~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      GE1/0/0            FE80::3A92:6CFF:FE21:10    10       A/-/-/-  
2001:DB8:3::3/128      GE1/0/0            FE80::3A92:6CFF:FE21:10    20       A/-/-/-  
2001:DB8:10::/96       GE1/0/0            Direct                     10       D/-/L/-  
2001:DB8:20::/96       GE1/0/0            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

3.在PE设备上配置使能IPv4地址族的VPN实例，将CE接入PE

# 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 111:1 both
[*PE1-vpn-instance-vpna-af-ipv4] 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 10.1.1.1 24
[*PE1-GigabitEthernet2/0/0] quit
[*PE1] commit

# 配置PE2。

[~PE2] ip vpn-instance vpna
[*PE2-vpn-instance-vpna] ipv4-family
[*PE2-vpn-instance-vpna-af-ipv4] route-distinguisher 200:1
[*PE2-vpn-instance-vpna-af-ipv4] vpn-target 111:1 both
[*PE2-vpn-instance-vpna-af-ipv4] quit
[*PE2-vpn-instance-vpna] quit
[*PE2] interface gigabitethernet 2/0/0
[*PE2-GigabitEthernet2/0/0] ip binding vpn-instance vpna
[*PE2-GigabitEthernet2/0/0] ip address 10.2.1.1 24
[*PE2-GigabitEthernet2/0/0] quit
[*PE2] commit

# 按图1配置各CE的接口IP地址，配置过程请参见后面的配置文件。

配置完成后，在PE设备上执行display ip vpn-instance verbose命令可以看到VPN实例的配置情况。各PE能ping通自己接入的CE。

4.在PE与CE之间建立EBGP对等体关系

# 配置CE1。

[~CE1] interface loopback 1
[*CE1-LoopBack1] ip address 11.11.11.11 32
[*CE1-LoopBack1] quit
[*CE1] bgp 65410
[*CE1-bgp] peer 10.1.1.1 as-number 100
[*CE1-bgp] network 11.11.11.11 32
[*CE1-bgp] quit
[*CE1] commit

# 配置PE1。

[~PE1] bgp 100
[*PE1-bgp] router-id 1.1.1.1
[*PE1-bgp] ipv4-family vpn-instance vpna
[*PE1-bgp-vpna] peer 10.1.1.2 as-number 65410
[*PE1-bgp-vpna] import-route direct
[*PE1-bgp-vpna] commit
[~PE1-bgp-vpna] quit
[~PE1-bgp] quit

# 配置CE2。

[~CE2] interface loopback 1
[*CE2-LoopBack1] ip address 22.22.22.22 32
[*CE2-LoopBack1] quit
[*CE2] bgp 65420
[*CE2-bgp] peer 10.2.1.1 as-number 100
[*CE2-bgp] network 22.22.22.22 32
[*CE2-bgp] quit
[*CE2] commit

# 配置PE2。

[~PE2] bgp 100
[*PE2-bgp] router-id 2.2.2.2
[*PE2-bgp] ipv4-family vpn-instance vpna
[*PE2-bgp-vpna] peer 10.2.1.2 as-number 65420
[*PE2-bgp-vpna] import-route direct
[*PE2-bgp-vpna] commit
[~PE2-bgp-vpna] quit
[~PE2-bgp] quit

配置完成后，在PE设备上执行display bgp vpnv4 vpn-instance peer命令，可以看到PE与CE之间的BGP对等体关系已建立，并达到Established状态。

以PE1与CE1的对等体关系为例：

[~PE1] display bgp vpnv4 vpn-instance vpna peer

 BGP local router ID : 1.1.1.1
 Local AS number : 100

 VPN-Instance vpna, Router ID 1.1.1.1:
 Total number of peers : 1            Peers in established state : 1

  Peer            V    AS  MsgRcvd  MsgSent    OutQ  Up/Down    State        PrefRcv
  10.1.1.2        4   65410  11     9          0     00:06:37   Established  1

5.在PE之间建立MP-IBGP对等体关系

# 配置PE1。

[~PE1] bgp 100
[~PE1-bgp] peer 2001:DB8:3::3 as-number 100
[*PE1-bgp] peer 2001:DB8:3::3 connect-interface loopback 1
[*PE1-bgp] ipv4-family vpnv4
[*PE1-bgp-af-vpnv4] peer 2001:DB8:3::3 enable
[*PE1-bgp-af-vpnv4] commit
[~PE1-bgp-af-vpnv4] quit
[~PE1-bgp] quit

# 配置PE2。

[~PE2] bgp 100
[~PE2-bgp] peer 2001:DB8:1::1 as-number 100
[*PE2-bgp] peer 2001:DB8:1::1 connect-interface loopback 1
[*PE2-bgp] ipv4-family vpnv4
[*PE2-bgp-af-vpnv4] peer 2001:DB8:1::1 enable
[*PE2-bgp-af-vpnv4] commit
[~PE2-bgp-af-vpnv4] quit
[~PE2-bgp] quit

配置完成后，在PE设备上执行display bgp vpnv4 all peer命令，可以看到PE之间的BGP对等体关系已建立，并达到Established状态。

以PE1显示为例：

[~PE1] display bgp vpnv4 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/Down       State  PrefRcv
  2001:DB8:3::3   4         100      216      220     0 03:03:35 Established        2

  Peer of IPv4-family for vpn instance :

  VPN-Instance vpna, Router ID 1.1.1.1:
  Peer            V          AS  MsgRcvd  MsgSent  OutQ  Up/Down       State  PrefRcv
  10.1.1.2        4       65410      216      217     0 03:06:22 Established        1

6.配置SRv6 SID，同时在PE上配置VPN私网路由携带SID属性

# 配置PE1。

[~PE1] segment-routing ipv6
[*PE1-segment-routing-ipv6] encapsulation source-address 2001:DB8:1::1
[*PE1-segment-routing-ipv6] locator as1 ipv6-prefix 2001:DB8:100:: 64 static 32
[*PE1-segment-routing-ipv6-locator] opcode ::111 end psp
[*PE1-segment-routing-ipv6-locator] quit
[*PE1-segment-routing-ipv6] quit
[*PE1] bgp 100
[*PE1-bgp] ipv4-family vpnv4
[*PE1-bgp-af-vpnv4] peer 2001:DB8:3::3 prefix-sid
[*PE1-bgp-af-vpnv4] quit
[*PE1-bgp] ipv4-family vpn-instance vpna
[*PE1-bgp-vpna] segment-routing ipv6 traffic-engineer best-effort
[*PE1-bgp-vpna] segment-routing ipv6 locator as1
[*PE1-bgp-vpna] commit
[~PE1-bgp-vpna] quit
[~PE1-bgp] quit
[~PE1] isis 1
[~PE1-isis-1] segment-routing ipv6 locator as1 auto-sid-disable 
[*PE1-isis-1] commit
[~PE1-isis-1] quit

# 配置P。

[~P] segment-routing ipv6
[*P-segment-routing-ipv6] encapsulation source-address 2001:DB8:2::2
[*P-segment-routing-ipv6] locator as1 ipv6-prefix 2001:DB8:200:: 64 static 32
[*P-segment-routing-ipv6-locator] opcode ::222 end psp
[*P-segment-routing-ipv6-locator] quit
[*P-segment-routing-ipv6] quit
[*P] isis 1
[*P-isis-1] segment-routing ipv6 locator as1 auto-sid-disable
[*P-isis-1] commit
[~P-isis-1] quit

# 配置PE2。

[~PE2] segment-routing ipv6
[*PE2-segment-routing-ipv6] encapsulation source-address 2001:DB8:3::3
[*PE2-segment-routing-ipv6] locator as1 ipv6-prefix 2001:DB8:300:: 64 static 32
[*PE2-segment-routing-ipv6-locator] opcode ::333 end psp
[*PE2-segment-routing-ipv6-locator] quit
[*PE2-segment-routing-ipv6] quit
[*PE2] bgp 100
[*PE2-bgp] ipv4-family vpnv4
[*PE2-bgp-af-vpnv4] peer 2001:DB8:1::1 prefix-sid
[*PE2-bgp-af-vpnv4] quit
[*PE2-bgp] ipv4-family vpn-instance vpna
[*PE2-bgp-vpna] segment-routing ipv6 traffic-engineer best-effort
[*PE2-bgp-vpna] segment-routing ipv6 locator as1
[*PE2-bgp-vpna] commit
[~PE2-bgp-vpna] quit
[~PE2-bgp] quit
[~PE2] isis 1
[~PE2-isis-1] segment-routing ipv6 locator as1 auto-sid-disable
[*PE2-isis-1] commit
[~PE2-isis-1] quit

执行命令display segment-routing ipv6 local-sid end forwarding查看SRv6的Local SID表信息。

[~PE1] display segment-routing ipv6 local-sid end forwarding
                    My Local-SID End Forwarding Table
                    ---------------------------------

SID         : 2001:DB8:100::111/128                        FuncType : End
Flavor      : PSP
LocatorName : as1                                          LocatorID: 1
ProtocolType: STATIC                                       ProcessID: --
UpdateTime  : 2021-08-30 01:46:05.713

Total SID(s): 1
[~PE2] display segment-routing ipv6 local-sid end forwarding
                    My Local-SID End Forwarding Table
                    ---------------------------------

SID         : 2001:DB8:300::333/128                        FuncType : End
Flavor      : PSP
LocatorName : as1                                          LocatorID: 1
ProtocolType: STATIC                                       ProcessID: --
UpdateTime  : 2021-08-30 01:47:26.426

Total SID(s): 1
[~P] display segment-routing ipv6 local-sid end forwarding
                    My Local-SID End Forwarding Table
                    ---------------------------------

SID         : 2001:DB8:200::222/128                        FuncType : End
Flavor      : PSP
LocatorName : as1                                          LocatorID: 1
ProtocolType: STATIC                                       ProcessID: --
UpdateTime  : 2021-08-30 01:49:44.292

Total SID(s): 1

7.配置SRv6 TE Policy

# 配置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::222
[*PE1-segment-routing-ipv6-segment-list-list1] index 10 sid ipv6 2001:DB8:300::333
[*PE1-segment-routing-ipv6-segment-list-list1] commit
[~PE1-segment-routing-ipv6-segment-list-list1] quit
[~PE1-segment-routing-ipv6] srv6-te-policy locator as1 
[*PE1-segment-routing-ipv6] srv6-te policy policy1 endpoint 2001:DB8:3::3 color 101
[*PE1-segment-routing-ipv6-policy-policy1] binding-sid 2001:DB8:100::100
[*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

# 配置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::222
[*PE2-segment-routing-ipv6-segment-list-list1] index 10 sid ipv6 2001:DB8:100::111
[*PE2-segment-routing-ipv6-segment-list-list1] commit
[~PE2-segment-routing-ipv6-segment-list-list1] quit
[~PE2-segment-routing-ipv6] srv6-te-policy locator as1 
[*PE2-segment-routing-ipv6] srv6-te policy policy1 endpoint 2001:DB8:1::1 color 101
[*PE2-segment-routing-ipv6-policy-policy1] binding-sid 2001:DB8:300::300
[*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

配置完成后，执行命令display srv6-te policy查看SRv6 TE Policy信息。

以PE1的显示为例：

[~PE1] display srv6-te policy
PolicyName : policy1
Color                   : 101                            Endpoint             : 2001:DB8:3::3
TunnelId                : 1                              Binding SID          : 2001:DB8:100::100
TunnelType              : SRv6-TE Policy                 DelayTimerRemain     : -
Policy State            : Up                             State Change Time    : 2019-02-17 11:45:30
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          : 2001:DB8:100::100
 GroupId                : 1                              Policy Name          : policy1
 Template ID            : 0                              Path Verification    : Disable
 DelayTimerRemain       : -                              Segment-List Count   : 1
  Segment-List          : list1
   Segment-List ID      : 1                              XcIndex              : 1  
   List State           : Up                             DelayTimerRemain     : - 
   Verification State   : -                              SuppressTimeRemain   : -   
   PMTU                 : 9600                           Active PMTU          : 9600
   Weight               : 1                              BFD State            : - 
   SID :  
         2001:DB8:200::222
         2001:DB8:300::333

8.配置隧道策略，引入私网流量

# 配置PE1。

[~PE1] route-policy p1 permit node 10
[*PE1-route-policy] apply extcommunity color 0:101
[*PE1-route-policy] quit
[*PE1] bgp 100
[*PE1-bgp] ipv4-family vpnv4
[*PE1-bgp-af-vpnv4] peer 2001:DB8:3::3 route-policy p1 import 
[*PE1-bgp-af-vpnv4] quit
[*PE1-bgp] quit
[*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] ip vpn-instance vpna
[*PE1-vpn-instance-vpna] ipv4-family
[*PE1-vpn-instance-vpna-af-ipv4] tnl-policy p1
[*PE1-vpn-instance-vpna-af-ipv4] commit
[~PE1-vpn-instance-vpna-af-ipv4] quit
[~PE1-vpn-instance-vpna] quit

# 配置PE2。

[~PE2] route-policy p1 permit node 10
[*PE2-route-policy] apply extcommunity color 0:101
[*PE2-route-policy] quit
[*PE2] bgp 100
[*PE2-bgp] ipv4-family vpnv4
[*PE2-bgp-af-vpnv4] peer 2001:DB8:1::1 route-policy p1 import 
[*PE2-bgp-af-vpnv4] quit
[*PE2-bgp] quit
[*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] ip vpn-instance vpna
[*PE2-vpn-instance-vpna] ipv4-family
[*PE2-vpn-instance-vpna-af-ipv4] tnl-policy p1
[*PE2-vpn-instance-vpna-af-ipv4] commit
[~PE2-vpn-instance-vpna-af-ipv4] quit
[~PE2-vpn-instance-vpna] quit

配置完成后，执行命令display ip routing-table vpn-instance vpna查看VPN实例路由表信息，可以看到私网路由已经成功迭代到SRv6 TE Policy。

以PE1的显示为例：

[~PE1] display ip routing-table vpn-instance vpna 
Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole route
------------------------------------------------------------------------------
Routing Table : vpna
         Destinations : 8        Routes : 8         

Destination/Mask    Proto   Pre  Cost        Flags NextHop         Interface

       10.1.1.0/24  Direct  0    0             D   10.1.1.1        GigabitEthernet2/0/0
       10.1.1.1/32  Direct  0    0             D   127.0.0.1       GigabitEthernet2/0/0
     10.1.1.255/32  Direct  0    0             D   127.0.0.1       GigabitEthernet2/0/0
       10.2.1.0/24  IBGP    255  0             RD  2001:DB8:3::3   policy1
    11.11.11.11/32  EBGP    255  0             RD  10.1.1.2        GigabitEthernet2/0/0
    22.22.22.22/32  IBGP    255  0             RD  2001:DB8:3::3   policy1
      127.0.0.0/8   Direct  0    0             D   127.0.0.1       InLoopBack0
255.255.255.255/32  Direct  0    0             D   127.0.0.1       InLoopBack0
[~PE1] display ip routing-table vpn-instance vpna 22.22.22.22 verbose 
Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole route
------------------------------------------------------------------------------
Routing Table : vpna
Summary Count : 1

Destination: 22.22.22.22/32      
     Protocol: IBGP               Process ID: 0              
   Preference: 255                      Cost: 0              
      NextHop: 2001:DB8:3::3       Neighbour: 2001:DB8:3::3
        State: Active Adv Relied         Age: 00h03m15s           
          Tag: 0                    Priority: low            
        Label: 3                     QoSInfo: 0x0           
   IndirectID: 0x10000E0            Instance:                                 
 RelayNextHop: ::                  Interface: policy1
     TunnelID: 0x000000003400000001    Flags: RD

9.检查配置结果

同一VPN的CE能够相互Ping通，例如：

[~CE1] ping -a 11.11.11.11 22.22.22.22
  PING 22.22.22.22: 56  data bytes, press CTRL_C to break
    Reply from 22.22.22.22: bytes=56 Sequence=1 ttl=253 time=7 ms
    Reply from 22.22.22.22: bytes=56 Sequence=2 ttl=253 time=5 ms
    Reply from 22.22.22.22: bytes=56 Sequence=3 ttl=253 time=4 ms
    Reply from 22.22.22.22: bytes=56 Sequence=4 ttl=253 time=5 ms
    Reply from 22.22.22.22: bytes=56 Sequence=5 ttl=253 time=5 ms

  --- 22.22.22.22 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 4/5/7 ms

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