Example: Configuring fast detection

As shown in Figure 23:

• Device A, Device B, Device C, and Device D form RRPP domain 1. VLAN 4092 is the primary control VLAN of RRPP domain 1. RRPP domain 1 protects VLANs 1 through 30.

• Device A is the master node and supports RRPP fast detection, providing a timer resolution of 10 milliseconds. The default Fast-Fail and Fast-Hello timers are 60 milliseconds and 20 milliseconds, respectively. Device D is a transit node. Device B and Device C do not support RRPP.

Neither Device B nor Device C supports RRPP. When the link between them fails, the link failure cannot be detected by the master node in a timely manner. Configure RRPP fast detection to implement fast link switchover even when the link between Device B and Device C fails.

	IMPORTANT: By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.

1. Configure Device A:

   # Create VLANs 1 through 30.

   <DeviceA> system-view
   [DeviceA] vlan 1 to 30
   

   # Map these VLANs to MSTI 1.

   [DeviceA] stp region-configuration
   [DeviceA-mst-region] instance 1 vlan 1 to 30
   

   # Activate the MST region configuration.

   [DeviceA-mst-region] active region-configuration
   [DeviceA-mst-region] quit
   

   # Set the physical state change suppression interval to 0 seconds on FortyGigE 1/0/1.

   [DeviceA] interface fortygige 1/0/1
   [DeviceA-FortyGigE1/0/1] link-delay 0
   

   # Disable the spanning tree feature on the port.

   [DeviceA-FortyGigE1/0/1] undo stp enable
   

   # Configure the port as a trunk port.

   [DeviceA-FortyGigE1/0/1] port link-type trunk
   

   # Assign the port to VLANs 1 through 30.

   [DeviceA-FortyGigE1/0/1] port trunk permit vlan 1 to 30
   [DeviceA-] quit
   

   # Configure FortyGigE 1/0/2 in the same way FortyGigE 1/0/1 is configured.

   [DeviceA] interface fortygige 1/0/2
   [DeviceA-FortyGigE1/0/2] link-delay 0
   [DeviceA-FortyGigE1/0/2] undo stp enable
   [DeviceA-FortyGigE1/0/2] port link-type trunk
   [DeviceA-FortyGigE1/0/2] port trunk permit vlan 1 to 30
   [DeviceA-FortyGigE1/0/2] quit
   

   # Create RRPP domain 1.

   [DeviceA] rrpp domain 1
   

   # Configure VLAN 4092 as the primary control VLAN of RRPP domain 1.

   [DeviceA-rrpp-domain1] control-vlan 4092
   

   # Configure the VLANs mapped to MSTI 1 as the protected VLANs of RRPP domain 1.

   [DeviceA-rrpp-domain1] protected-vlan reference-instance 1
   

   # Configure Device A as the master node of the primary ring Ring 1, with FortyGigE 1/0/1 as the primary port and as the secondary port. Enable Ring 1.

   [DeviceA-rrpp-domain1] ring 1 node-mode master primary-port fortygige 1/0/1 secondary-port fortygige 1/0/2 level 0
   [DeviceA-rrpp-domain1] ring 1 enable
   

   # Enable fast detection. Set the Fast-Hello timer and Fast-Fail timer to 100 milliseconds and 300 milliseconds, respectively.

   [DeviceA-rrpp-domain1] fast-detection enable
   [DeviceA-rrpp-domain1] fast-timer hello-timer 100 fail-timer 300
   [DeviceA-rrpp-domain1] quit
   

   # Enable the RRPP protocol.

   [DeviceA] rrpp enable
   

2. Configure Device B:

   # Create VLAN 4092 and VLAN 4093.

   <DeviceB> system-view
   [DeviceB] vlan 4092 to 4093
   

   # Set the physical state change suppression interval to 0 seconds on FortyGigE 1/0/1.

   [DeviceB] interface fortygige 1/0/1
   [DeviceB-FortyGigE1/0/1] link-delay 0
   

   # Disable the spanning tree feature on the port.

   [DeviceB-FortyGigE1/0/1] undo stp enable
   

   # Configure the port as a trunk port.

   [DeviceB-] port link-type trunk
   

   # Assign the port to VLANs 1 through 30, 4092, and 4093.

   [DeviceB-FortyGigE1/0/1] port trunk permit vlan 1 to 30 4092 4093
   [DeviceB-] quit
   

   # Configure FortyGigE 1/0/2 in the same way FortyGigE 1/0/1 is configured.

   [DeviceB] interface fortygige 1/0/2
   [DeviceB-FortyGigE1/0/2] link-delay 0
   [DeviceB-FortyGigE1/0/2] undo stp enable
   [DeviceB-] port link-type trunk
   [DeviceB-FortyGigE1/0/2] port trunk permit vlan 1 to 30 4092 4093
   

3. Configure Device C:

   # Create VLAN 4092 and VLAN 4093.

   <DeviceC> system-view
   [DeviceC] vlan 4092 to 4093
   

   # Set the physical state change suppression interval to 0 seconds on FortyGigE 1/0/1.

   [DeviceC] interface fortygige 1/0/1
   [DeviceC-FortyGigE1/0/1] link-delay 0
   

   # Disable the spanning tree feature on the port.

   [DeviceC-FortyGigE1/0/1] undo stp enable
   

   # Configure the port as a trunk port.

   [DeviceC-FortyGigE1/0/1] port link-type trunk
   

   # Assign the port to VLANs 1 through 30, 4092, and 4093.

   [DeviceC-FortyGigE1/0/1] port trunk permit vlan 1 to 30 4092 4093
   [DeviceC-FortyGigE1/0/1] quit
   

   # Configure FortyGigE 1/0/2 in the same way FortyGigE 1/0/1 is configured.

   [DeviceC] interface fortygige 1/0/2
   [DeviceC-FortyGigE1/0/2] link-delay 0
   [DeviceC-] undo stp enable
   [DeviceC-FortyGigE1/0/2] port link-type trunk
   [DeviceC-FortyGigE1/0/2] port trunk permit vlan 1 to 30 4092 4093
   

4. Configure Device D:

   # Create VLANs 1 through 30.

   <DeviceD> system-view
   [DeviceD] vlan 1 to 30
   

   # Map these VLANs to MSTI 1.

   [DeviceD] stp region-configuration
   [DeviceD-mst-region] instance 1 vlan 1 to 30
   

   # Activate the MST region configuration.

   [DeviceD-mst-region] active region-configuration
   [DeviceD-mst-region] quit
   

   # Set the physical state change suppression interval to 0 seconds on FortyGigE 1/0/1.

   [DeviceD] interface 
   [DeviceD-FortyGigE1/0/1] link-delay 0
   

   # Disable the spanning tree feature on the port.

   [DeviceD-FortyGigE1/0/1] undo stp enable
   

   # Configure the port as a trunk port.

   [DeviceD-FortyGigE1/0/1] port link-type trunk
   

   # Assign the port to VLANs 1 through 30.

   [DeviceD-FortyGigE1/0/1] port trunk permit vlan 1 to 30
   [DeviceD-FortyGigE1/0/1] quit
   

   # Configure FortyGigE 1/0/2 in the same way FortyGigE 1/0/1 is configured.

   [DeviceD] interface fortygige 1/0/2
   [DeviceD-FortyGigE1/0/2] link-delay 0
   [DeviceD-FortyGigE1/0/2] undo stp enable
   [DeviceD-FortyGigE1/0/2] port link-type trunk
   [DeviceD-FortyGigE1/0/2] port trunk permit vlan 1 to 30
   [DeviceD-] quit
   

   # Create RRPP domain 1.

   [DeviceD] rrpp domain 1
   

   # Configure VLAN 4092 as the primary control VLAN of RRPP domain 1.

   [DeviceD-rrpp-domain1] control-vlan 4092
   

   # Configure the VLANs mapped to MSTI 1 as the protected VLANs of RRPP domain 1.

   [DeviceD-rrpp-domain1] protected-vlan reference-instance 1
   

   # Configure Device D as a transit node of the primary ring Ring 1, with FortyGigE 1/0/1 as the primary port and FortyGigE 1/0/2 as the secondary port. Enable Ring 1.

   [DeviceD-rrpp-domain1] ring 1 node-mode transit primary-port fortygige 1/0/1 secondary-port fortygige 1/0/2 level 0
   [DeviceD-rrpp-domain1] ring 1 enable
   [DeviceD-rrpp-domain1] quit
   

   # Enable the RRPP protocol.

   [DeviceD] rrpp enable
   

# Use the display commands to view RRPP configuration and operational information on Device A and Device D.