Maipu Administration Guide

Configure ULPP

Network Requirements

Four devices form the dual-uplink networking. The uplink devices are Device1, Device2, and Device3; the downlink device is Device4.
Configure the ULPP function on the downlink device so that the port normally bears or switches the services in the associated spanning tree instance.

Network Topology

Networking of configuring the ULPP group

Figure 4-1 Networking of configuring the ULPP group

Configuration Steps

Step 1: Configure the link type of the VLAN and port.

#Create VLAN2-VLAN20 on Device1, configure the link type of port gigabiteternet0/1, gigabiteternet0/2 on Device1 as Trunk; permit the services of VLAN2-VLAN20 to pass.

Device1#configure terminal
Device1(config)#vlan 2-20
Device1(config)#interface gigabitethernet 0/1
Device1(config-if-gigabitethernet0/1)#switchport mode trunk
Device1(config-if-gigabitethernet0/1)#switchport trunk allowed vlan add 2-20
Device1(config-if-gigabitethernet0/1)#exit
Device1(config)#interface gigabitethernet 0/2
Device1(config-if-gigabitethernet0/2)#switchport mode trunk
Device1(config-if-gigabitethernet0/2)#switchport trunk allowed vlan add 2-20
Device1(config-if-gigabitethernet0/2)#exit

The configuration of the VLAN, port and link type of Device2, Device3, and Device4 is the same as that of Device1. (Omitted)

Step 2: Configure the spanning tree instance on Device4.

#Configure the spanning tree instance; instance 1 maps VLAN3-VLAN10; instance 2 maps VLAN11-VLAN20.

Device4(config)#spanning-tree mst configuration
Device4(config-mst)#region-name admin
Device4(config-mst)#revision-level 1
Device4(config-mst)#instance 1 vlan 3-10
Device4(config-mst)#instance 2 vlan 11-20

#Enable the spanning tree instance.

Device4(config-mst)#active configuration pending
Device4(config-mst)#exit

Step 3: Configure the ULPP function on Device4.

#Create the ULPP group.

Device4(config)#ulpp-group 1

#Configure the master port gigabitethernet0/1 and slave port gigabitethernet0/2 of the ULPP group.

Device4(config-ulpp-1)#master interface gigabitethernet 0/1
Device4(config-ulpp-1)#slave interface gigabitethernet 0/2

#Configure the master port gigabitethernet0/1 to link with the spanning tree instance 1 and slave port gigabitethernet0/2 to link with the spanning tree instance 2.

Device4(config-ulpp-1)#instance group 1 master
Device4(config-ulpp-1)#instance group 2 slave

#Configure the work mode of the ULPP group as the link backup.

Device4(config-ulpp-1)#mode backup

#Configure the control VLAN of the ULPP group as VLAN2.

Device4(config-ulpp-1)#control-vlan 2

#Enable the sending mechanism of the ULPP Flush packet.

Device4(config-ulpp-1)#flush enable

#Enable the ULPP group.

Device4(config-ulpp-1)#enable
Device4(config-ulpp-1)#exit

After VLAN2 is configured as control VLAN, only the Flush packets can pass in the VLAN, but the other service packets cannot.

Step 4: Configure the uplink device Device1, Device2 and Device3.

#Configure the receiving and sending mechanism of the Flush packets on Device1.

Device1(config)#interface gigabitethernet 0/1-0/2
Device1(config-if-range)#ulpp flush control-vlan 2
Device1(config-if-range)#exit

The receiving and forwarding mechanism of Device2 and Device3 is the same as that of Device1. (Omitted)

Step 5: Check the result.

#View the ULPP group status on Device4.

Device4#show ulpp group 1
--------------------------
ulpp-group 1 configuration information
---------------------------
Current status             : MASS
Work type                  : Backup
Control vlan                2
Flush function             : Enable
Preemtion mode             : Disable
Master interface name      : gi0/1
Slave interface name       : gi0/2
Master interface status    : Active
Slave interface status	   : Standby
Master interface instance   1
Slave interface instance	2
Flexlink compatible        : Disable
Smartlink compatible	   : Disable
Smartlink mcast compatible : Disable
Enable status		       : Enable

#View the status of the associated spanning tree instance of the master and slave port on Device4.

Device4#show ulpp instance group 1
-----------------------------------
ulpp-group 1 instance status
-----------------------------------
Master forwarding instance   : 1-2
Master block instance		 : None
Slave forwarding instance    : None
Slave block instance         : 1-2

#After port gigabitethernet0/1 of Device4 fails, switch over the status of the ULPP group. View the status of the ULPP group on Device4.

Device4#show ulpp group 1
--------------------------------
ulpp-group 1 configuration information
--------------------------------
Current status             : MNSA
Work type                  : Backup
Control vlan                2
Flush function             : Enable
Preemtion mode             : Disable
Master interface name      : gi0/1
Slave interface name       : gi0/2
Master interface status    : Down
Slave interface status     : Active
Master interface instance	1
Slave interface instance	2
Flexlink compatible        : Disable
Smartlink compatible       : Disable
Smartlink mcast compatible : Disable
Enable status              : Enable

The master port gigabitethernet0/1 changes from Active to Down; the slave port gigabitethernet0/2 changes from Standby to Active; the services in the spanning tree instance are forwarded normally via gigabitethernet0/2.

#The uplink device Device1 and Device2 prints the following information.

19:26:10: [tUlpp]%ULPP-ASSI: Receive flush message from gigabitethernet0/2 success, the receive sequence number is 1, vlan id is 2

The printed is the information of the Flush packet received by the uplink device Device1 and Device2 when the status of the ULPP group switches.