Network Requirements
- All Devices are in one L2 network.
- All devices enable ERPS, and adopt ERPS to cut the link rings in the network.
Network Topology
![Configure ERPS basic functions](/storage/images/Document/Maipu/reliability/config-erps-basic-functions.jpg)
Figure 11-1 Configure ERPS basic functions
Configuration Steps
Step 1: Configure vlan and port link type.
#On Device1–Device4, create VLAN2, VLAN100~VLAN200 respectively, and configure the link type of ports gigabitethernet0/1 and gigabitethernet0/2 as Trunk, permitting the services of VLAN2, vlan100~VLAN200 to pass.
Device1#configure terminal
Device1(config)#vlan 2,100-200
Device1(config)# interface gigabitethernet 0/1
Device1(config-if-gigabitethernet0/1)#shutdown
Device1(config-if-gigabitethernet0/1)# switchport mode trunk
Device1(config-if-gigabitethernet0/1)# no switchport trunk allowed vlan all
Device1(config-if-gigabitethernet0/1)# switchport trunk allowed vlan add 2,100-200
Device1(config-if-gigabitethernet0/1)#exit
Device1(config)# interface gigabitethernet 0/2
Device1(config-if-gigabitethernet0/1)# switchport mode trunk
Device1(config-if-gigabitethernet0/1)# no switchport trunk allowed vlan all
Device1(config-if-gigabitethernet0/1)# switchport trunk allowed vlan add 2,100-200
Device1(config-if-gigabitethernet0/1)#end
|
Step 2: Configure the MST instance.
#On Device1–Device4, configure MST instance 1 to map vlan100-200, and activate the instance.
Device1#configure terminal
Device1(config)# spanning-tree mst configuration
Device1(config-mst)# instance 1 vlan 100-200
Device1(config-mst)# active configuration pending
Device1(config-mst)#end
|
Step 3: Configure ERPS.
#On Device1, configure ERPS ring1, configures vlan2 as control VLAN of ring1, configure gigabitethernet0/1 as the normal port of ring1, configure gigabitethernet0/2 as the owner port of ring1, configure instance 1 as data VLAN of ring1, and enable ERPS function of ring1.
Device1# configure terminal
Device1(config)#erps ring 1
Device1(config-erps1)# control vlan 2
Device1(config-erps1)# port0 interface g0/1
Device1(config-erps1)# port1 interface g0/2 rpl owner
Device1(config-erps1)# instance 1
Device1(config-erps1)# erps enable
Device1(config-erps1)# exit
Device1(config)# interface gigabitethernet 0/1
Device1(config-if-gigabitethernet0/1)#no shutdown
Device1(config-if-gigabitethernet0/1)# end
|
#On Device2, configure ERPS ring1, configures vlan2 as control VLAN of ring1, configure gigabitethernet0/1 as the normal port of ring1, configure gigabitethernet0/2 as the normal port of ring1, configure instance 1 as data VLAN of ring1, and enable ERPS function of ring1.
Device2# configure terminal
Device2(config)#erps ring 1
Device2(config-erps1)# control vlan 2
Device2(config-erps1)# port0 interface g0/1
Device2(config-erps1)# port1 interface g0/2
Device2(config-erps1)# instance 1
Device2(config-erps1)# erps enable
Device2(config-erps1)# exit
Device2(config)# interface gigabitethernet 0/1
Device2(config-if-gigabitethernet0/1)#no shutdown
Device2(config-if-gigabitethernet0/1)# end
|
#On Device3, configure ERPS ring1, configure vlan2 as control VLAN of ring1, configure gigabitethernet0/1 as the neighbor port of ring1, configure gigabitethernet0/2 as the normal port of ring1, configure instance 1 as data VLAN of ring1, and enable ERPS function of ring1.
Device3# configure terminal
Device3(config)#erps ring 1
Device3(config-erps1)# control vlan 2
Device3(config-erps1)# port0 interface g0/1 rpl neighbor
Device3(config-erps1)# port1 interface g0/2
Device3(config-erps1)# instance 1
Device3(config-erps1)# erps enable
Device3(config-erps1)# exit
Device3(config)# interface gigabitethernet 0/1
Device3(config-if-gigabitethernet0/1)#no shutdown
Device3(config-if-gigabitethernet0/1)# end
|
#On Device4, configure ERPS ring1, configure vlan2 as control VLAN of ring1, configure gigabitethernet0/1 as the normal port of ring1, configure gigabitethernet0/2 as the normal port of ring1, configure instance 1 as data VLAN of ring1, and enable ERPS function of ring1.
Device4# configure terminal
Device4(config)#erps ring 1
Device4(config-erps1)# control vlan 2
Device4(config-erps1)# port0 interface g0/1
Device4(config-erps1)# port1 interface g0/2
Device4(config-erps1)# instance 1
Device4(config-erps1)# erps enable
Device4(config-erps1)# exit
Device4(config)# interface gigabitethernet 0/1
Device4(config-if-gigabitethernet0/1)#no shutdown
Device4(config-if-gigabitethernet0/1)# end
|
Step 4: Check the result.
#After the netwotk topology becomes stable, query the ERPS information of the Device, and take device1 as an example.
#Query the ERPS information of Device1.
Device1# show erps ring 1 detail
Ring ID : 1
Version : v2
R-APS mel : 7
Instance : 1 vlans mapped : 100-200
Control VLAN : 2
Node role : Owner Node
state : idle
Guard timer : 500 ms Running : 0 ms
Holdoff timer : 0 ms Running : 0 ms
WTR timer : 5 min Running : 0 s
WTB timer : 7 s Running : 0 s
Subring : No
Tc-limit enable : No
Tc-limit Interval : 2
Tc-limit Threshold : 3
Revertive operation : Revertive
R-APS channel : Non-Virtual channel
Enable status : Enable Gigabitethernet0/1 Flush Logic
Remote Node ID : 0000-0000-0000
Remote BPR : 0
Gigabitethernet0/1 track CFM
MD Name :
MA Name :
MEP ID : 0
RMEP ID : 0
CFM State : 0
Gigabitethernet0/2 Flush Logic
Remote Node ID : 0000-0000-0000
Remote BPR : 0
Gigabitethernet0/2 track CFM
MD Name :
MA Name :
MEP ID : 0
RMEP ID : 0
CFM State : 0
Port Name PortRole SwitchType PortStatus SignalStatus
-----------------------------------------------------------------------------
Port0 gigabitethernet0/1 Normal--------------Forwarding Non-failed
Port1 gigabitethernet0/2 Owner---------------Blocking Non-failed
![note](/storage/images/Document/Maipu/note-icon.jpg)
-
Before configuring ERPS, ensure that the link status of at least one point in the ring network is down. Otherwise, it will cause loop.