配置EVPN VPLS over SRv6 BE示例

NE20E-S V800R011C10 配置指南 - Segment Routing 02

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本节介绍了通过SRv6 BE承载EVPN E-LAN业务的配置示例。

组网需求

如图3-8所示：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。然后在PE1和PE2之间通过建立双向SRv6 BE承载EVPN E-LAN业务。

图3-8 配置EVPN VPLS over SRv6 BE组网图

本例中interface1、interface2分别代表GE0/1/0、GE0/2/0。

配置思路

采用如下的思路配置EVPN VPLS over SRv6 BE：

使能各设备的IPv6转发能力，配置各接口的IPv6地址。
在各设备上使能IS-IS，配置Level级别，指定网络实体。
在PE设备上配置BD模式的EVPN实例，并将相应的BD绑定到接入侧子接口。
在PE设备之间建立BGP EVPN对等体关系。
在PE设备上配置SRv6 BE。

数据准备

为完成此配置例，需准备如下的数据：

EVPN实例名称evrf1。
EVPN实例的RD值为100:1和RT为1:1。
BD的ID为100。
PE1上的节点路由段名称分别为PE1_ARG、PE1；PE2上的节点路由段名称分别为PE2_ARG、PE2；Opcode采用动态生成。
节点路由段PE1_ARG和PE2_ARG的参数段长度均为10（args）。

操作步骤

使能各设备的IPv6转发能力，配置各接口的IPv6地址

<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 64
[*PE1-GigabitEthernet0/1/0] quit
[*PE1] interface LoopBack 1
[*PE1-LoopBack1] ip address 1.1.1.1 32
[*PE1-LoopBack1] ipv6 enable
[*PE1-LoopBack1] ipv6 address 2001:DB8:1::1 64
[*PE1-LoopBack1] quit
[*PE1] commit

由于需要为EVPN源地址准备IPv4地址，因此这里Loopback接口还需配置IPv4地址。这里以PE1为例，其他设备的配置过程相同，详情可参考配置文件。

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 standard

[*PE1-isis-1] quit

[*PE1] interface gigabitethernet 0/1/0

[*PE1-GigabitEthernet0/1/0] isis ipv6 enable 1

[*PE1-GigabitEthernet0/1/0] commit

[~PE1-GigabitEthernet0/1/0] 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 standard

[*P-isis-1] quit

[*P] interface gigabitethernet 0/1/0

[*P-GigabitEthernet0/1/0] isis ipv6 enable 1

[*P-GigabitEthernet0/1/0] commit

[~P-GigabitEthernet0/1/0] quit

[*P] interface gigabitethernet 0/2/0

[*P-GigabitEthernet0/2/0] isis ipv6 enable 1

[*P-GigabitEthernet0/2/0] commit

[~P-GigabitEthernet0/2/0] 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 standard

[*PE2-isis-1] quit

[*PE2] interface gigabitethernet 0/1/0

[*PE2-GigabitEthernet0/1/0] isis ipv6 enable 1

[*PE2-GigabitEthernet0/1/0] commit

[*PE2-GigabitEthernet0/1/0] 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  GE0/1/0           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::/64    GE0/1/0            Direct                     10       D/-/L/-  
2001:DB8:2::/64    GE0/1/0            FE80::3A5D:67FF:FE31:307   10       A/-/-/-
2001:DB8:3::/64    GE0/1/0            FE80::3A5D:67FF:FE31:307   20       A/-/-/-  
2001:DB8:10::/64   GE0/1/0            Direct                     20       D/-/L/-  
2001:DB8:20::/64   GE0/1/0            FE80::3A5D:67FF:FE31:307   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

在PE设备上配置BD模式的EVPN实例，并将相应的BD绑定到接入侧子接口

# 配置PE1。

[~PE1] evpn vpn-instance evrf1 bd-mode

[*PE1-evpn-instance-evrf1] route-distinguisher 100:1

[*PE1-evpn-instance-evrf1] vpn-target 1:1

[*PE1-evpn-instance-evrf1] quit

[*PE1] evpn source-address 1.1.1.1

[*PE1] bridge-domain 100

[*PE1-bd100] evpn binding vpn-instance evrf1

[*PE1-bd100] quit

[*PE1] interface gigabitethernet 0/2/0.1 mode l2

[*PE1-GigabitEthernet 0/2/0.1] encapsulation dot1q vid 1

[*PE1-GigabitEthernet 0/2/0.1] rewrite pop single

[*PE1-GigabitEthernet 0/2/0.1] bridge-domain 100

[*PE1-GigabitEthernet 0/2/0.1] quit

[*PE1] commit

# 配置PE2。

[~PE2] evpn vpn-instance evrf1 bd-mode

[*PE2-evpn-instance-evrf1] route-distinguisher 100:1

[*PE2-evpn-instance-evrf1] vpn-target 1:1

[*PE2-evpn-instance-evrf1] quit

[*PE2] evpn source-address 3.3.3.3

[*PE2] bridge-domain 100

[*PE2-bd100] evpn binding vpn-instance evrf1

[*PE2-bd100] quit

[*PE2] interface gigabitethernet 0/2/0.1 mode l2

[*PE2-GigabitEthernet 0/2/0.1] encapsulation dot1q vid 1

[*PE2-GigabitEthernet 0/2/0.1] rewrite pop single

[*PE2-GigabitEthernet 0/2/0.1] bridge-domain 100

[*PE2-GigabitEthernet 0/2/0.1] quit

[*PE2] commit

在PE设备之间建立BGP EVPN对等体关系

# 配置PE1。

[~PE1] bgp 100

[*PE1-bgp] route-id 1.1.1.1

[*PE1-bgp] peer 2001:DB8:3::3 as-number 100

[*PE1-bgp] peer 2001:DB8:3::3 connect-interface loopback 1

[*PE1-bgp] l2vpn-family evpn

[*PE1-bgp-af-evpn] peer 2001:DB8:3::3 enable

[*PE1-bgp-af-evpn] peer 2001:DB8:3::3 advertise encap-type srv6

[*PE1-bgp-af-evpn] quit

[*PE1-bgp] quit

[*PE1] commit

# 配置PE2。

[~PE2] bgp 100

[*PE2-bgp] route-id 3.3.3.3

[*PE2-bgp] peer 2001:DB8:1::1 as-number 100

[*PE2-bgp] peer 2001:DB8:1::1 connect-interface loopback 1

[*PE2-bgp] l2vpn-family evpn

[*PE2-bgp-af-evpn] peer 2001:DB8:1::1 enable

[*PE2-bgp-af-evpn] peer 2001:DB8:1::1 advertise encap-type srv6

[*PE2-bgp-af-evpn] quit

[*PE2-bgp] quit

[*PE2] commit

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

在PE设备之间建立SRv6 BE

# 配置PE1。

[~PE1] segment-routing ipv6

[*PE1-segment-routing-ipv6] encapsulation source-address 2001:DB8:1::1

[*PE1-segment-routing-ipv6] locator PE1 ipv6-prefix 2001:DB8:11:: 64

[*PE1-segment-routing-ipv6-locator] quit

[*PE1-segment-routing-ipv6] locator PE1_ARG ipv6-prefix 2001:DB8:12:: 64 args 10

[*PE1-segment-routing-ipv6-locator] quit

[*PE1-segment-routing-ipv6] quit

[*PE1] isis 1

[*PE1-isis-1] segment-routing ipv6 locator PE1

[*PE1-isis-1] quit

[*PE1] evpn vpn-instance evrf1 bd-mode

[*PE1-evpn-instance-evrf1] segment-routing ipv6 locator PE1_ARG unicast-locator PE1

[*PE1-evpn-instance-evrf1] segment-routing ipv6 best-effort

[*PE1-evpn-instance-evrf1] quit

[*PE1] commit

# 配置PE2。

[~PE2] segment-routing ipv6

[*PE2-segment-routing-ipv6] encapsulation source-address 2001:DB8:3::3

[*PE2-segment-routing-ipv6] locator PE2 ipv6-prefix 2001:DB8:21:: 64

[*PE2-segment-routing-ipv6-locator] quit

[*PE2-segment-routing-ipv6] locator PE2_ARG ipv6-prefix 2001:DB8:22:: 64 args 10

[*PE2-segment-routing-ipv6-locator] quit

[*PE2-segment-routing-ipv6] quit

[*PE2] isis 1
[*PE2-isis-1] segment-routing ipv6 locator PE2
[*PE2-isis-1] quit
[*PE2] evpn vpn-instance evrf1 bd-mode
[*PE2-evpn-instance-evrf1] segment-routing ipv6 locator PE2_ARG unicast-locator PE2
[*PE2-evpn-instance-evrf1] segment-routing ipv6 best-effort
[*PE2-evpn-instance-evrf1] quit
[*PE2] commit

检查配置结果

在PE上通过命令display segment-routing ipv6 local-sid { end-dt2u | end-dt2ul | end-dt2m } forwarding，查看SRv6 BE的Local SID表信息。以PE1为例：

[~PE1] display segment-routing ipv6 local-sid end-dt2m forwarding

                    My Local-SID End.DT2M Forwarding Table
                     --------------------------------------
SID             : 2001:DB8:12::400/128                         FuncType : End.DT2M
Bridge-domain ID: 100                                          
LocatorName     : PE1_ARG                                      LocatorID: 5

Total SID(s): 1

[~PE1] display segment-routing ipv6 local-sid end-dt2u forwarding
                     My Local-SID End.DT2U Forwarding Table
                    --------------------------------------

SID             : 2001:DB8:11::3D/128                          FuncType : End.DT2U
Bridge-domain ID: 100                                         
LocatorName     : PE1                                          LocatorID: 4

Total SID(s): 1

在PE上通过配置命令display bgp evpn all routing-table，可以看到远端发来的EVPN路由。以PE1为例：

[~PE1] display bgp evpn all routing-table

Local AS number : 100

 BGP Local router ID is 1.1.1.1
 Status codes: * - valid, > - best, d - damped, x - best external, a - add path,
               h - history,  i - internal, s - suppressed, S - Stale
               Origin : i - IGP, e - EGP, ? - incomplete


 EVPN address family:
 Number of Inclusive Multicast Routes: 2
 Route Distinguisher: 100:1
       Network(EthTagId/IpAddrLen/OriginalIp)                 NextHop
 *>    0:32:1.1.1.1                                           127.0.0.1                                    
 *>i   0:32:3.3.3.3                                           2001:DB8:3::3                                


 EVPN-Instance evrf1:
 Number of Inclusive Multicast Routes: 2
       Network(EthTagId/IpAddrLen/OriginalIp)                 NextHop
 *>    0:32:1.1.1.1                                           127.0.0.1                                    
 *>i   0:32:3.3.3.3                                           2001:DB8:3::3

配置文件

PE1的配置文件

#
sysname PE1
#
evpn vpn-instance evrf1 bd-mode
 route-distinguisher 100:1
 segment-routing ipv6 best-effort
 segment-routing ipv6 locator PE1_ARG unicast-locator PE1 
 vpn-target 1:1 export-extcommunity
 vpn-target 1:1 import-extcommunity
#
bridge-domain 100
 evpn binding vpn-instance evrf1
#               
segment-routing ipv6
 encapsulation source-address 2001:db8:1::1
 locator PE1 ipv6-prefix 2001:DB8:11:: 64
 locator PE1_ARG ipv6-prefix 2001:DB8:12:: 64 args 10
#               
isis 1          
 is-level level-1
 cost-style wide
 network-entity 10.0000.0000.0001.00
 #              
 ipv6 enable topology standard
 segment-routing ipv6 locator PE1
 #              
# 
interface GigabitEthernet0/1/0
 undo shutdown  
 ipv6 enable    
 ipv6 address 2001:DB8:10::1/64
 isis ipv6 enable 1
#
interface GigabitEthernet0/2/0
 undo shutdown
#
interface GigabitEthernet0/2/0.1 mode l2
 encapsulation dot1q vid 1
 rewrite pop single
 bridge-domain 100
#
interface LoopBack1
 ipv6 enable    
 ip address 1.1.1.1 255.255.255.255
 ipv6 address 2001:DB8:1::1/64
 isis ipv6 enable 1
#               
bgp 100         
 router-id 1.1.1.1
 peer 2001:DB8:3::3 as-number 100
 peer 2001:DB8:3::3 connect-interface LoopBack1
 #              
 ipv4-family unicast
  undo synchronization
 #              
 l2vpn-family evpn
  policy vpn-target
  peer 2001:DB8:3::3 enable
  peer 2001:DB8:3::3 advertise encap-type srv6
#
evpn source-address 1.1.1.1
#
return

P的配置文件

#
sysname P
#               
isis 1          
 is-level level-1
 cost-style wide
 network-entity 10.0000.0000.0002.00
 #              
 ipv6 enable topology standard
 #              
#
interface GigabitEthernet0/1/0
 undo shutdown  
 ipv6 enable    
 ipv6 address 2001:DB8:10::2/64
 isis ipv6 enable 1
#
interface GigabitEthernet0/2/0
 undo shutdown  
 ipv6 enable    
 ipv6 address 2001:DB8:20::1/64
 isis ipv6 enable 1
#
interface LoopBack1
 ipv6 enable    
 ip address 2.2.2.2 255.255.255.255
 ipv6 address 2001:DB8:2::2/64
 isis ipv6 enable 1
#
return

PE2的配置文件

#
sysname PE2
#
evpn vpn-instance evrf1 bd-mode
 route-distinguisher 100:1
 segment-routing ipv6 best-effort
 segment-routing ipv6 locator PE2_ARG unicast-locator PE2 
 vpn-target 1:1 export-extcommunity
 vpn-target 1:1 import-extcommunity
#
bridge-domain 100
 evpn binding vpn-instance evrf1
#               
segment-routing ipv6
 encapsulation source-address 2001:db8:3::3
 locator PE2 ipv6-prefix 2001:DB8:21:: 64
 locator PE2_ARG ipv6-prefix 2001:DB8:22:: 64 args 10
#               
isis 1          
 is-level level-1
 cost-style wide
 network-entity 10.0000.0000.0003.00
 #              
 ipv6 enable topology standard
 segment-routing ipv6 locator PE2
 #              
# 
interface GigabitEthernet0/1/0
 undo shutdown  
 ipv6 enable    
 ipv6 address 2001:DB8:20::2/64
 isis ipv6 enable 1
#
interface GigabitEthernet0/2/0
 undo shutdown
#
interface GigabitEthernet0/2/0.1 mode l2
 encapsulation dot1q vid 1
 rewrite pop single
 bridge-domain 100
#
interface LoopBack1
 ipv6 enable    
 ip address 3.3.3.3 255.255.255.255
 ipv6 address 2001:DB8:3::3/64
 isis ipv6 enable 1
#               
bgp 100         
 router-id 3.3.3.3
 peer 2001:DB8:1::1 as-number 100
 peer 2001:DB8:1::1 connect-interface LoopBack1
 #              
 ipv4-family unicast
  undo synchronization
 #              
 l2vpn-family evpn
  policy vpn-target
  peer 2001:DB8:1::1 enable
  peer 2001:DB8:1::1 advertise encap-type srv6
# 
evpn source-address 3.3.3.3
#
return

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更新时间：2020-02-07

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