一、組網拓撲
二、配置思路
1、采用如下的思路配置ERPS單環：
2、配置加入ERPS環的所有端口類型為Trunk型。
3、創建ERPS環，並配置控制VLAN和保護實例。
4、將二層端口加入ERPS環並配置端口角色。
5、配置ERPS環的Guard Timer和WTR（Wait to Restore） Timer定時器。
6、配置DeviceA～DeviceD二層轉發功能。
三、數據准備
1、為完成此配置例，需准備如下的數據：
2、ERPS環ID、控制VLAN ID和保護實例ID。
3、Guard Timer和WTR Timer定時器大小。
4、二層轉發VLAN ID。
三、配置步驟
1、配置加入ERPS環的所有端口類型為Trunk型。
2、創建ERPS環1、ERPS環2並配置兩個ERPS環的保護實例，配置ERPS環1的控制VLAN ID為10，ERPS環2的控制VLAN ID為20，ERPS環1傳遞VLAN100～VLAN200的數據報文，ERPS環2傳遞VLAN300～VLAN400的數據報文。
3、將二層端口加入ERPS環並配置端口角色，分別將DeviceA的端口1/0/1和DeviceB的端口1/0/2配置為RPL owner。
4、配置ERPS環的Guard Timer和WTR Timer定時器。
5、配置DeviceA～DeviceD二層轉發功能。
四、配置腳本
sysname CE-5
#
device board 1 board-type CE-MPUB
#
vlan batch 10 20 100 to 200 300 to 400
#
vlan instance
instance 1 vlan 10 100 to 200
instance 2 vlan 20 300 to 400
#
erps ring 1
control-vlan 10
protected-instance 1
wtr-timer 6
guard-timer 100
#
erps ring 2
control-vlan 20
protected-instance 2
wtr-timer 6
guard-timer 100
#
#
interface GE1/0/0
undo shutdown
port default vlan 100
#
interface GE1/0/1
undo shutdown
port link-type trunk
port trunk allow-pass vlan 10 20 100 to 200 300 to 400
stp disable
erps ring 1
erps ring 2 rpl owner
#
interface GE1/0/2
undo shutdown
port link-type trunk
port trunk allow-pass vlan 10 20 100 to 200 300 to 400
stp disable
erps ring 1
erps ring 2
#
interface GE1/0/3
undo shutdown
port default vlan 300
#
#
sysname CE-6
#
device board 1 board-type CE-MPUB
#
vlan batch 10 20 100 to 200 300 to 400
#
vlan instance
instance 1 vlan 10 100 to 200
instance 2 vlan 20 300 to 400
#
erps ring 1
control-vlan 10
protected-instance 1
wtr-timer 6
guard-timer 100
#
erps ring 2
control-vlan 20
protected-instance 2
wtr-timer 6
guard-timer 100
#
interface GE1/0/0
undo shutdown
port default vlan 300
#
interface GE1/0/1
shutdown
port link-type trunk
port trunk allow-pass vlan 10 20 100 to 200 300 to 400
stp disable
erps ring 1
erps ring 2
#
interface GE1/0/2
undo shutdown
port link-type trunk
port trunk allow-pass vlan 10 20 100 to 200 300 to 400
stp disable
erps ring 1 rpl owner
erps ring 2
#
interface GE1/0/3
undo shutdown
port default vlan 100
#
sysname CE-7
#
device board 1 board-type CE-MPUB
#
vlan batch 10 20 100 to 200 300 to 400
#
interface Vlanif100
ip address 192.168.1.252 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.1.254
vrrp vrid 1 priority 200
#
interface Vlanif300
ip address 192.168.3.252 255.255.255.0
vrrp vrid 3 virtual-ip 192.168.3.254
#
vlan instance
instance 1 vlan 10 100 to 200
instance 2 vlan 20 300 to 400
#
erps ring 1
control-vlan 10
protected-instance 1
wtr-timer 6
guard-timer 100
#
erps ring 2
control-vlan 20
protected-instance 2
wtr-timer 6
guard-timer 100
#
interface GE1/0/0
undo shutdown
port default vlan 100
#
interface GE1/0/1
undo shutdown
port link-type trunk
port trunk allow-pass vlan 10 20 100 to 200 300 to 400
stp disable
erps ring 1
erps ring 2
#
interface GE1/0/2
undo shutdown
port link-type trunk
port trunk allow-pass vlan 10 20 100 to 200 300 to 400
stp disable
erps ring 1
erps ring 2
#
sysname CE-8
#
device board 1 board-type CE-MPUB
#
vlan batch 10 20 100 to 200 300 to 400
#
interface Vlanif100
ip address 192.168.1.253 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.1.254
#
interface Vlanif300
ip address 192.168.3.253 255.255.255.0
vrrp vrid 3 virtual-ip 192.168.3.254
vrrp vrid 3 priority 120
#
vlan instance
instance 1 vlan 10 100 to 200
instance 2 vlan 20 300 to 400
#
erps ring 1
control-vlan 10
protected-instance 1
wtr-timer 6
guard-timer 100
#
erps ring 2
control-vlan 20
protected-instance 2
wtr-timer 6
guard-timer 100
#
interface GE1/0/0
undo shutdown
port default vlan 300
#
interface GE1/0/1
undo shutdown
port link-type trunk
port trunk allow-pass vlan 10 20 100 to 200 300 to 400
stp disable
erps ring 1
erps ring 2
#
interface GE1/0/2
undo shutdown
port link-type trunk
port trunk allow-pass vlan 10 20 100 to 200 300 to 400
stp disable
erps ring 1
erps ring 2
#