华为NE40E路由器实验配置示例 | 配置EVdPdNd L3VdPdNdv4 over SRv6 BE Flex-Algo
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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 BE路径，承载EVPN L3VPNv4业务。同时由于公网PE之间存在多条链路，要求数据流量在时延较低的链路PE1-P1-PE2上进行转发。
本例通过定义静态时延属性，来支持vpn1的业务需求。
图1 配置EVPN L3VPNv4 over SRv6 BE Flex-Algo组网图
配置思路
-
使能PE1、P1、PE2和P2各接口的IPv6转发能力，配置各接口的IPv6地址。
-
在PE1、P1、PE2和P2上使能IS-IS，配置Level级别，指定网络实体。
- 配置Flex-Algo链路的时延属性。
- 配置Flex-Algo算法定义。
- 使能IS-IS发布灵活算法能力，使能IS-IS进程的TE特性，使能IS-IS发布IPv6链路的时延。
-
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BGP EVPN对等体关系。
- 在PE之间建立基于Flex-Algo的SRv6 BE路径。
操作步骤
1. 使能各接口的IPv6转发能力，配置IPv6地址，以PE1为例，其他路由器的配置过程相同，不再赘述
<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:db8:1::1 96
[*PE1-GigabitEthernet1/0/0] quit
[*PE1] interface gigabitethernet 3/0/0
[*PE1-GigabitEthernet3/0/0] ipv6 enable
[*PE1-GigabitEthernet3/0/0] ipv6 address 2001:db8:3::1 96
[*PE1-GigabitEthernet3/0/0] quit
[*PE1] interface LoopBack 1
[*PE1-LoopBack1] ipv6 enable
[*PE1-LoopBack1] ipv6 address 2001:db8:11::1 128
[*PE1-LoopBack1] quit
[*PE1] commit2. 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 gigabitethernet 3/0/0
[*PE1-GigabitEthernet3/0/0] isis ipv6 enable 1
[*PE1-GigabitEthernet3/0/0] quit
[*PE1] interface loopback1
[*PE1-LoopBack1] isis ipv6 enable 1
[*PE1-LoopBack1] commit
[~PE1-LoopBack1] quit# 配置P1。
[~P1] isis 1
[*P1-isis-1] is-level level-1
[*P1-isis-1] cost-style wide
[*P1-isis-1] network-entity 10.0000.0000.0002.00
[*P1-isis-1] ipv6 enable topology ipv6
[*P1-isis-1] quit
[*P1] interface gigabitethernet 1/0/0
[*P1-GigabitEthernet1/0/0] isis ipv6 enable 1
[*P1-GigabitEthernet1/0/0] quit
[*P1] interface gigabitethernet 2/0/0
[*P1-GigabitEthernet2/0/0] isis ipv6 enable 1
[*P1-GigabitEthernet2/0/0] quit
[*P1] interface loopback1
[*P1-LoopBack1] isis ipv6 enable 1
[*P1-LoopBack1] commit
[~P1-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 gigabitethernet 3/0/0
[*PE2-GigabitEthernet3/0/0] isis ipv6 enable 1
[*PE2-GigabitEthernet3/0/0] quit
[*PE2] interface loopback1
[*PE2-LoopBack1] isis ipv6 enable 1
[*PE2-LoopBack1] commit
[~PE2-LoopBack1] quit# 配置P2。
[~P2] isis 1
[*P2-isis-1] is-level level-1
[*P2-isis-1] cost-style wide
[*P2-isis-1] network-entity 10.0000.0000.0004.00
[*P2-isis-1] ipv6 enable topology ipv6
[*P2-isis-1] quit
[*P2] interface gigabitethernet 1/0/0
[*P2-GigabitEthernet1/0/0] isis ipv6 enable 1
[*P2-GigabitEthernet1/0/0] quit
[*P2] interface gigabitethernet 2/0/0
[*P2-GigabitEthernet2/0/0] isis ipv6 enable 1
[*P2-GigabitEthernet2/0/0] quit
[*P2] interface loopback1
[*P2-LoopBack1] isis ipv6 enable 1
[*P2-LoopBack1] commit
[~P2-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 6s L1 64
0000.0000.0004* GE3/0/0 0000.0000.0004.01 Up 9s L1 64
Total Peer(s): 2 # 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::/96 GE1/0/0 Direct 10 D/-/L/-
2001:DB8:2::/96 GE1/0/0 FE80::3A5D:67FF:FE31:307 20 A/-/-/-
2001:DB8:3::/96 GE3/0/0 Direct 10 D/-/L/-
2001:DB8:4::/96 GE3/0/0 FE80::3A5D:67FF:FE41:305 20 A/-/-/-
2001:DB8:11::1/128 Loop1 Direct 0 D/-/L/-
2001:DB8:12::2/128 GE1/0/0 FE80::3A5D:67FF:FE31:307 10 A/-/-/-
2001:DB8:13::3/128 GE1/0/0 FE80::3A5D:67FF:FE31:307 20 A/-/-/-
GE3/0/0 FE80::3A5D:67FF:FE41:305
2001:DB8:14::4/128 GE3/0/0 FE80::3A5D:67FF:FE41:305 10 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. 配置Flex-Algo链路的时延属性
# 配置PE1。
[~PE1] te attribute enable
[*PE1] interface gigabitethernet1/0/0
[*PE1-GigabitEthernet1/0/0] te link-attribute-application flex-algo
[*PE1-GigabitEthernet1/0/0-te-link-attribute-application] delay 10
[*PE1-GigabitEthernet1/0/0-te-link-attribute-application] quit
[*PE1-GigabitEthernet1/0/0] quit
[*PE1] interface gigabitethernet3/0/0
[*PE1-GigabitEthernet3/0/0] te link-attribute-application flex-algo
[*PE1-GigabitEthernet3/0/0-te-link-attribute-application] delay 20
[*PE1-GigabitEthernet3/0/0-te-link-attribute-application] quit
[*PE1-GigabitEthernet3/0/0] quit
[*PE1] commit# 配置P1。
[~P1] te attribute enable
[*P1] interface gigabitethernet1/0/0
[*P1-GigabitEthernet1/0/0] te link-attribute-application flex-algo
[*P1-GigabitEthernet1/0/0-te-link-attribute-application] delay 10
[*P1-GigabitEthernet1/0/0-te-link-attribute-application] quit
[*P1-GigabitEthernet1/0/0] quit
[*P1] interface gigabitethernet2/0/0
[*P1-GigabitEthernet2/0/0] te link-attribute-application flex-algo
[*P1-GigabitEthernet2/0/0-te-link-attribute-application] delay 10
[*P1-GigabitEthernet2/0/0-te-link-attribute-application] quit
[*P1-GigabitEthernet2/0/0] quit
[*P1] commit# 配置PE2。
[~PE2] te attribute enable
[*PE2] interface gigabitethernet1/0/0
[*PE2-GigabitEthernet1/0/0] te link-attribute-application flex-algo
[*PE2-GigabitEthernet1/0/0-te-link-attribute-application] delay 10
[*PE2-GigabitEthernet1/0/0-te-link-attribute-application] quit
[*PE2-GigabitEthernet1/0/0] quit
[*PE2] interface gigabitethernet3/0/0
[*PE2-GigabitEthernet3/0/0] te link-attribute-application flex-algo
[*PE2-GigabitEthernet3/0/0-te-link-attribute-application] delay 20
[*PE2-GigabitEthernet3/0/0-te-link-attribute-application] quit
[*PE2-GigabitEthernet3/0/0] quit
[*PE2] commit# 配置P2。
[~P2] te attribute enable
[*P2] interface gigabitethernet1/0/0
[*P2-GigabitEthernet1/0/0] te link-attribute-application flex-algo
[*P2-GigabitEthernet1/0/0-te-link-attribute-application] delay 20
[*P2-GigabitEthernet1/0/0-te-link-attribute-application] quit
[*P2-GigabitEthernet1/0/0] quit
[*P2] interface gigabitethernet2/0/0
[*P2-GigabitEthernet2/0/0] te link-attribute-application flex-algo
[*P2-GigabitEthernet2/0/0-te-link-attribute-application] delay 20
[*P2-GigabitEthernet2/0/0-te-link-attribute-application] quit
[*P2-GigabitEthernet2/0/0] quit
[*P2] commit4. 配置Flex-Algo算法定义
同一个IGP域可以选择1~2台设备配置Flex-Algo算法定义，为了提升可靠性，推荐选择2台设备配置Flex-Algo算法定义。
# 配置PE1。
[~PE1] flex-algo identifier 128
[*PE1-flex-algo-128] priority 100
[*PE1-flex-algo-128] metric-type delay
[*PE1-flex-algo-128] quit
[*PE1] commit# 配置PE2。
[~PE2] flex-algo identifier 128
[*PE2-flex-algo-128] priority 100
[*PE2-flex-algo-128] metric-type delay
[*PE2-flex-algo-128] quit
[*PE2] commit5. 使能IS-IS发布灵活算法能力，使能IS-IS进程的TE特性，使能IS-IS发布IPv6链路的时延
# 配置PE1。
[~PE1] isis 1
[*PE1-isis-1] flex-algo 128 level-1
[*PE1-isis-1] ipv6 traffic-eng level-1
[*PE1-isis-1] ipv6 metric-delay advertisement enable level-1
[*PE1-isis-1] quit
[*PE1] commit# 配置P1。
[~P1] isis 1
[*P1-isis-1] flex-algo 128 level-1
[*P1-isis-1] ipv6 traffic-eng level-1
[*P1-isis-1] ipv6 metric-delay advertisement enable level-1
[*P1-isis-1] quit
[*P1] commit# 配置PE2。
[~PE2] isis 1
[*PE2-isis-1] flex-algo 128 level-1
[*PE2-isis-1] ipv6 traffic-eng level-1
[*PE2-isis-1] ipv6 metric-delay advertisement enable level-1
[*PE2-isis-1] quit
[*PE2] commit# 配置P2。
[~P2] isis 1
[*P2-isis-1] flex-algo 128 level-1
[*P2-isis-1] ipv6 traffic-eng level-1
[*P2-isis-1] ipv6 metric-delay advertisement enable level-1
[*P2-isis-1] quit
[*P2] commit6. 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 vpn1
[*PE1-vpn-instance-vpn1] ipv4-family
[*PE1-vpn-instance-vpn1-af-ipv4] route-distinguisher 100:1
[*PE1-vpn-instance-vpn1-af-ipv4] vpn-target 111:1 both evpn
[*PE1-vpn-instance-vpn1-af-ipv4] quit
[*PE1-vpn-instance-vpn1] quit
[*PE1] interface gigabitethernet 2/0/0
[*PE1-GigabitEthernet2/0/0] ip binding vpn-instance vpn1
[*PE1-GigabitEthernet2/0/0] ip address 10.1.1.2 24
[*PE1-GigabitEthernet2/0/0] quit
[*PE1] commit# 配置PE2。
[~PE2] ip vpn-instance vpn1
[*PE2-vpn-instance-vpn1] ipv4-family
[*PE2-vpn-instance-vpn1-af-ipv4] route-distinguisher 200:1
[*PE2-vpn-instance-vpn1-af-ipv4] vpn-target 111:1 both evpn
[*PE2-vpn-instance-vpn1-af-ipv4] quit
[*PE2-vpn-instance-vpn1] quit
[*PE2] interface gigabitethernet 2/0/0
[*PE2-GigabitEthernet2/0/0] ip binding vpn-instance vpn1
[*PE2-GigabitEthernet2/0/0] ip address 10.2.1.2 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。
7. 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 10.11.1.1 32
[*CE1-LoopBack1] quit
[*CE1] bgp 65410
[*CE1-bgp] peer 10.1.1.2 as-number 100
[*CE1-bgp] network 10.11.1.1 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 vpn1
[*PE1-bgp-vpn1] peer 10.1.1.1 as-number 65410
[*PE1-bgp-vpn1] import-route direct
[*PE1-bgp-vpn1] commit
[~PE1-bgp-vpn1] quit
[~PE1-bgp] quit# 配置CE2。
[~CE2] interface loopback 1
[*CE2-LoopBack1] ip address 10.22.2.2 32
[*CE2-LoopBack1] quit
[*CE2] bgp 65420
[*CE2-bgp] peer 10.2.1.2 as-number 100
[*CE2-bgp] network 10.22.2.2 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 vpn1
[*PE2-bgp-vpn1] peer 10.2.1.1 as-number 65420
[*PE2-bgp-vpn1] import-route direct
[*PE2-bgp-vpn1] commit
[~PE2-bgp-vpn1] 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 vpn1 peer
BGP local router ID : 1.1.1.1
Local AS number : 100
VPN-Instance vpn1, 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
10.1.1.1 4 65410 310 318 0 04:26:42 Established 1 8. 在PE之间建立BGP EVPN对等体关系
# 配置PE1。
[~PE1] bgp 100
[~PE1-bgp] peer 2001:db8:13::3 as-number 100
[*PE1-bgp] peer 2001:db8:13::3 connect-interface loopback 1
[*PE1-bgp] l2vpn-family evpn
[*PE1-bgp-af-evpn] peer 2001:db8:13::3 enable
[*PE1-bgp-af-evpn] commit
[~PE1-bgp-af-evpn] quit
[~PE1-bgp] quit# 配置PE2。
[~PE2] bgp 100
[~PE2-bgp] peer 2001:db8:11::1 as-number 100
[*PE2-bgp] peer 2001:db8:11::1 connect-interface loopback 1
[*PE2-bgp] l2vpn-family evpn
[*PE2-bgp-af-evpn] peer 2001:db8:11::1 enable
[*PE2-bgp-af-evpn] commit
[~PE2-bgp-af-evpn] quit
[~PE2-bgp] quit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对等体关系已建立，并达到Established状态。以PE1的显示为例：
[~PE1] display bgp evpn 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
2001:DB8:13::3 4 100 314 311 0 04:27:06 Established 2 9. 在PE之间建立基于Flex-Algo的SRv6 BE路径
# 配置PE1。
[~PE1] segment-routing ipv6
[*PE1-segment-routing-ipv6] encapsulation source-address 2001:db8:11::1
[*PE1-segment-routing-ipv6] locator PE1 ipv6-prefix 2001:db8:100:: 64 static 32 flex-algo 128
[*PE1-segment-routing-ipv6-locator] quit
[*PE1-segment-routing-ipv6] quit
[*PE1] bgp 100
[*PE1-bgp] l2vpn-family evpn
[*PE1-bgp-af-evpn] peer 2001:db8:13::3 advertise encap-type srv6
[*PE1-bgp-af-evpn] quit
[*PE1-bgp] ipv4-family vpn-instance vpn1
[*PE1-bgp-vpn1] advertise l2vpn evpn
[*PE1-bgp-vpn1] segment-routing ipv6 best-effort evpn
[*PE1-bgp-vpn1] segment-routing ipv6 locator PE1 evpn
[*PE1-bgp-vpn1] quit
[*PE1-bgp] quit
[*PE1] isis 1
[*PE1-isis-1] segment-routing ipv6 locator PE1
[*PE1-isis-1] commit
[~PE1-isis-1] quit# 配置PE2。
[~PE2] segment-routing ipv6
[*PE2-segment-routing-ipv6] encapsulation source-address 2001:db8:13::3
[*PE2-segment-routing-ipv6] locator PE2 ipv6-prefix 2001:db8:300:: 64 static 32 flex-algo 128
[*PE2-segment-routing-ipv6-locator] quit
[*PE2-segment-routing-ipv6] quit
[*PE2] bgp 100
[*PE2-bgp] l2vpn-family evpn
[*PE2-bgp-af-evpn] peer 2001:db8:11::1 advertise encap-type srv6
[*PE2-bgp-af-evpn] quit
[*PE2-bgp] ipv4-family vpn-instance vpn1
[*PE2-bgp-vpn1] advertise l2vpn evpn
[*PE2-bgp-vpn1] segment-routing ipv6 best-effort evpn
[*PE2-bgp-vpn1] segment-routing ipv6 locator PE2 evpn
[*PE2-bgp-vpn1] quit
[*PE2-bgp] quit
[*PE2] isis 1
[*PE2-isis-1] segment-routing ipv6 locator PE2
[*PE2-isis-1] commit
[~PE2-isis-1] quit# 配置P1。
[~P1] segment-routing ipv6
[*P1-segment-routing-ipv6] locator P1 ipv6-prefix 2001:db8:200:: 64 static 32 flex-algo 128
[*P1-segment-routing-ipv6-locator] quit
[*P1-segment-routing-ipv6] quit
[*P1] isis 1
[*P1-isis-1] segment-routing ipv6 locator P1
[*P1-isis-1] commit
[~P1-isis-1] quit# 配置P2。
[~P2] segment-routing ipv6
[*P2-segment-routing-ipv6] locator P2 ipv6-prefix 2001:db8:400:: 64 static 32 flex-algo 128
[*P2-segment-routing-ipv6-locator] quit
[*P2-segment-routing-ipv6] quit
[*P2] isis 1
[*P2-isis-1] segment-routing ipv6 locator P2
[*P2-isis-1] commit
[~P2-isis-1] quit10. 检查配置结果
执行命令display segment-routing ipv6 locator [ locator-name ] verbose查看SRv6的Locator信息。以PE1为例：
[~PE1] display segment-routing ipv6 locator verbose
Locator Configuration Table
---------------------------
LocatorName : PE1 LocatorID : 3
IPv6Prefix : 2001:DB8:100:: PrefixLength : 64
Block : -- BlockLength : 0
NodeID : -- NodeIdLength : 0
ComprStaticLen: 0 StaticLength : 32
ArgsLength : 0 Reference : 0
AutoCSIDPoolID: 0 ComprDynLength: 0
Algorithm : 128
AutoCSIDBegin : --
AutoCSIDEnd : --
StaticCSIDBegin: --
StaticCSIDEnd : --
AutoSIDPoolID : 8194 DynLength : 32
AutoSIDBegin : 2001:DB8:100::1:0:0
AutoSIDEnd : 2001:DB8:100:0:FFFF:FFFF:FFFF:FFFF
StaticSIDBegin: 2001:DB8:100::1
StaticSIDEnd : 2001:DB8:100::FFFF:FFFF
Total Locator(s): 1执行命令display segment-routing ipv6 local-sid end-dt4 forwarding查看SRv6的Local SID表信息。以PE1为例：
[~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 : vpn1 VPN ID : 3
LocatorName: PE1 LocatorID: 1
Total SID(s): 1 在PE设备上执行display isis route ipv6 flex-algo 128命令，可以看到IS-IS Flex-Algo 128的路由信息。以PE1的显示为例：
[~PE1] display isis route ipv6 flex-algo 128
Route information for ISIS(1)
-----------------------------
ISIS(1) Level-1 Flex-Algo Forwarding Table
------------------------------------------
IPV6 Dest. ExitInterface NextHop Cost Flags
--------------------------------------------------------------------------------
2001:DB8:100::/64 NULL0 - 0 A/-/-/-
2001:DB8:200::/64 GE1/0/0 FE80::3A5D:67FF:FE31:307 10 A/-/-/-
2001:DB8:300::/64 GE1/0/0 FE80::3A5D:67FF:FE31:307 20 A/-/-/-
2001:DB8:400::/64 GE3/0/0 FE80::3A5D:67FF:FE41:305 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 可以看到Locator路由2001:DB8:300::/64的出接口是GE1/0/0，说明数据流量会在时延较低的链路PE1-P1-PE2上进行转发。
在PE设备上执行display bgp evpn all routing-table命令，可以看到BGP EVPN路由信息。以PE1的显示为例：
[~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 Ip Prefix Routes: 4
Route Distinguisher: 100:1
Network(EthTagId/IpPrefix/IpPrefixLen) NextHop
*> 0:10.1.1.0:24 0.0.0.0
*> 0:10.11.1.1:32 10.1.1.1
Route Distinguisher: 200:1
Network(EthTagId/IpPrefix/IpPrefixLen) NextHop
*>i 0:10.2.1.0:24 2001:DB8:13::3
*>i 0:10.22.2.2:32 2001:DB8:13::3
[~PE1] display bgp evpn all routing-table prefix-route 0:10.22.2.2:32
BGP local router ID : 1.1.1.1
Local AS number : 100
Total routes of Route Distinguisher(200:1): 1
BGP routing table entry information of 0:10.22.2.2:32:
Label information (Received/Applied): 3/NULL
From: 2001:DB8:13::3 (2.2.2.2)
Route Duration: 0d04h42m41s
Relay IP Nexthop: FE80::3A5D:67FF:FE31:307
Relay IP Out-Interface: GigabitEthernet1/0/0
Relay Tunnel Out-Interface:
Original nexthop: 2001:DB8:13::3
Qos information : 0x0
Ext-Community: RT <111 : 1>
Prefix-sid: 2001:DB8:300::1:0:3E
AS-path 65420, origin igp, MED 0, localpref 100, pref-val 0, valid, internal, best, select, pre 255, IGP cost 20
Route Type: 5 (Ip Prefix Route)
Ethernet Tag ID: 0, IP Prefix/Len: 10.22.2.2/32, ESI: 0000.0000.0000.0000.0000, GW IP Address: 0.0.0.0
Not advertised to any peer yet 在PE设备上执行display ip routing-table vpn-instance vpn1命令，可以看到VPN实例路由表信息。以PE1的显示为例：
[~PE1] display ip routing-table vpn-instance vpn1
Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole route
------------------------------------------------------------------------------
Routing Table : vpn1
Destinations : 8 Routes : 8
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.1.1.0/24 Direct 0 0 D 10.1.1.2 GigabitEthernet2/0/0
10.1.1.2/32 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:DB8:300::1:0:3E SRv6 BE
10.11.1.1/32 EBGP 255 0 RD 10.1.1.1 GigabitEthernet2/0/0
10.22.2.2/32 IBGP 255 0 RD 2001:DB8:300::1:0:3E SRv6 BE
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 在PE设备上执行display ip routing-table vpn-instance vpn1 ip-address verbose命令，可以看到VPN实例路由的详细信息。以PE1的显示为例：
[~PE1] display ip routing-table vpn-instance vpn1 10.22.2.2 verbose
Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole route
------------------------------------------------------------------------------
Routing Table : vpn1
Summary Count : 1
Destination: 10.22.2.2/32
Protocol: IBGP Process ID: 0
Preference: 255 Cost: 0
NextHop: 2001:DB8:300::1:0:3E Neighbour: 2001:DB8:13::3
State: Active Adv Relied Age: 03h36m34s
Tag: 0 Priority: low
Label: NULL QoSInfo: 0x0
IndirectID: 0x10000E3 Instance:
RelayNextHop: 2001:DB8:300::1:0:3E Interface: SRv6 BE
TunnelID: 0x0 Flags: RD 同一VPN的CE能够相互Ping通，例如：
[~CE1] ping -a 10.11.1.1 10.22.2.2
PING 10.22.2.2: 56 data bytes, press CTRL_C to break
Reply from 10.22.2.2: bytes=56 Sequence=1 ttl=253 time=3 ms
Reply from 10.22.2.2: bytes=56 Sequence=2 ttl=253 time=3 ms
Reply from 10.22.2.2: bytes=56 Sequence=3 ttl=253 time=3 ms
Reply from 10.22.2.2: bytes=56 Sequence=4 ttl=253 time=3 ms
Reply from 10.22.2.2: bytes=56 Sequence=5 ttl=253 time=3 ms
--- 10.22.2.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 3/3/3 ms 以上是关于华为NE40E路由器实验配置示例 | 配置EVdPdNd L3VdPdNdv4 over SRv6 BE Flex-Algo的主要内容，如果未能解决你的问题，请参考以下文章
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