环境
window10 22H2
HCL V5.10.3（开启win7兼容模式）
参考视频： B站UP主：大十字不理人
拓扑
本文参考B站视频思路，实现BGP EVPN Vxlan分布式+M-LAG 二层通信，底层IGP使用OSPF。
配置
1 基础IP配置以及IGP配置（略）
OSPF中宣告各设备的链路地址以及回环接口即可。
2 M-LAG配置
Leaf_1-1 与Leaf_1-2直接链路为G1/0/5 To g1/0/8,其中：5、6口用于keepalive链路，7、8口用于peer-link。
2.1 Leaf_1-1
php
#
vlan 10 20
#
ip vpn-instance keepalive //建立vpn实例，后续给keepalive链路使用(g1/0/5 t g 1/0/6)
quit
#
interface Bridge-Aggregation 1 //创建peer-link链路(g1/0/7 t g 1/0/8)
quit
#
interface range g1/0/7 g1/0/8
port link-aggregation group 1
quit
#
interface Bridge-Aggregation 1
port m-lag peer-link 1
link-aggregation mode dynamic
undo port trunk peermit vlan 1
quit
#
interface Bridge-Aggregation 2 //创建下联聚合口(g1/0/3)
quit
#
interface g 1/0/3
port link-aggregation group 2
quit
#
interface Bridge-Aggregation 2
port m-lag group 2
link-aggregation mode dynamic
port link-type trunk
port trunk peermit vlan 10 20
undo port trunk peermit vlan 1
quit
#
interface ragg 1 //创建keepalive链路
quit
#
interface range g1/0/5 g1/0/6
port link-mode route
port link-aggregation group 1
quit
#
interface ragg 1
ip binding vpn-instance keepalive
ip address 10.10.10.1 30
link-aggregation mode dynamic
quit
#
m-lag mad exclude interface Route-Aggregation 1 # 排除keepalive聚合口
m-lag restore-delay 120 # 两边一致
m-lag system-mac 0001-0001-0001 # 两边一致
m-lag system-number 1 # 两边不一致
m-lag system-priority 123 # 两边一致
m-lag consistency-check disable # 禁用M-LAG的一致性检查,实验中如果不敲下联链路会自行Dowon
m-lag consistency-check mode loose # 将M-LAG一致性检查设置为宽松模式
m-lag standalone enable delay 30
m-lag keepalive ip destination 10.10.10.2 source 10.10.10.1 vpn-instance keepalive
#2.2 Leaf_1-2
Leaf_1-2的聚合口配置与Leaf_1-1的一致，此处不再赘述，Leaf_1-2的m-lag配置如下：
php
#
interface Route-Aggregation1
ip binding vpn-instance keepalive
ip address 10.10.10.2 255.255.255.252
link-aggregation mode dynamic
#
m-lag mad exclude interface Route-Aggregation1
m-lag restore-delay 120
m-lag system-mac 0001-0001-0001
m-lag system-number 2
m-lag system-priority 123
m-lag consistency-check disable
m-lag consistency-check mode loose
m-lag standalone enable delay 30
m-lag keepalive ip destination 10.10.10.1 source 10.10.10.2 vpn-instance keepalive
#2.3 SW1
php
vlan 10
#
vlan 20
interface Bridge-Aggregation 2
quit
#
interface g 1/0/7 to g 1/0/8
port link-aggregation group 2
quit
#
interface Bridge-Aggregation 2
link-aggregation mode dynamic
port link-type trunk
port trunk peermit vlan 10 20
undo port trunk peermit vlan 1
quit
#2.4 M-LAG验证
至此，M-LAG配置结束。
3 建立VXLAN隧道
3.1 配置VSI（类似华为的BD）
3.1.1 Leaf_1-1
php
#
l2vpn enable # 使能l2vpn
vxlan tunnel arp-learning disable
vxlan tunnel mac-learning disable
#
vsi 10
vxlan 10 # 二层VNI
evpn encapsulation vxlan #evpn 封装类型为vxlan
route-distinguisher 10:10
vpn-target 10:10 export-extcommunity
vpn-target 10:10 import-extcommunity
#
vsi 20
vxlan 20
evpn encapsulation vxlan
route-distinguisher 20:20
vpn-target 20:20 export-extcommunity
vpn-target 20:20 import-extcommunity
#
interface Bridge-Aggregation2 # 由于下联接口做了聚合，所以VTEP的几口需要在聚合口里面配置
vtep access port # 接入端口
service-instance 10 # 允许vlan10通过，对应vsi 10
encapsulation s-vid 10
xconnect vsi 10
service-instance 20 # # 允许vlan20通过，对应vsi 20
encapsulation s-vid 20
xconnect vsi 20
#
bgp 100
timer keepalive 3 hold 9
timer connect-retry 3
peer 3.3.3.3 as-number 100
peer 3.3.3.3 connect-interface LoopBack0
peer 4.4.4.4 as-number 100
peer 4.4.4.4 connect-interface LoopBack0
#
address-family l2vpn evpn # 与Spine1,2建立bgp l2vpn evpn 对等体关系
peer 3.3.3.3 enable
peer 4.4.4.4 enable
#
interface loopback 0 # 用于evpn m-lag group地址，
ip add 1.2.3.4 32
#
evpn m-lag group 1.2.3.4 # 在建立vxlan隧道时，使用该地址作为vtep地址与对端建隧道,该地址也需要宣告到ospf中Leaf_1-2的配置与Leaf_1-1的一致，此处不再赘述。
3.1.2 Leaf_2
php
l2vpn enable # 使能l2vpn
vxlan tunnel arp-learning disable
vxlan tunnel mac-learning disable
#
vsi 10
vxlan 10
evpn encapsulation vxlan
route-distinguisher 10:10
vpn-target 10:10 export-extcommunity
vpn-target 10:10 import-extcommunity
#
vsi 20
vxlan 20
evpn encapsulation vxlan
route-distinguisher 20:20
vpn-target 20:20 export-extcommunity
vpn-target 20:20 import-extcommunity
#
interface GigabitEthernet1/0/3
vtep access port
#
service-instance 10
encapsulation s-vid 10
xconnect vsi 10
#
service-instance 20
encapsulation s-vid 20
xconnect vsi 20
#
bgp 100
timer keepalive 3 hold 9
timer connect-retry 3
peer 3.3.3.3 as-number 100
peer 3.3.3.3 connect-interface LoopBack0
peer 4.4.4.4 as-number 100
peer 4.4.4.4 connect-interface LoopBack0
#
address-family l2vpn evpn
peer 3.3.3.3 enable
peer 4.4.4.4 enable
#3.2 配置Spine(RR)
Spine1
php
bgp 100
timer keepalive 3 hold 9
timer connect-retry 3
peer 5.5.5.5 as-number 100
peer 5.5.5.5 connect-interface LoopBack0
peer 6.6.6.6 as-number 100
peer 6.6.6.6 connect-interface LoopBack0
peer 15.15.15.15 as-number 100
peer 15.15.15.15 connect-interface LoopBack0
#
address-family l2vpn evpn
undo policy vpn-target
peer 5.5.5.5 enable
peer 5.5.5.5 reflect-client
peer 6.6.6.6 enable
peer 6.6.6.6 reflect-client
peer 15.15.15.15 enable
peer 15.15.15.15 reflect-client
#Spine2的配置与Spine1一致，此处不再赘述。
3.3 VXLAN隧道建立验证
3.3.1 Leaf_1-1
3.3.2 Leaf_1-2
3.3.3 Leaf_2
至此，VXLAN隧道通过BGP EVPN成功建立。
4 二层互访测试
4.1 PC_1
4.2 PC_2
至此，本案例结束，后续会基于该拓扑场景进一步实现VXLAN跨子网通信。