HP 5500 Ei 5500 Si Switch Series Configuration Guide
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[DeviceC] rrpp enable
4. Configure Device D:
# Create VLANs 1 and 2, map VLAN 1 to MSTI 1 an d VLAN 2 to MSTI 2, and activate MST region
configuration.
system-view
[DeviceD] vlan 1 to 2
[DeviceD] stp region-configuration
[DeviceD-mst-region] instance 1 vlan 1
[DeviceD-mst-region] instance 2 vlan 2
[DeviceD-mst-region] active region-configuration
[DeviceD-mst-region] quit
# Cancel the physical state change suppression interval setting on GigabitEthernet 1/0/1 and
GigabitEthernet 1/0/2,...](http://img.usermanuals.tech/thumb/36/58909/w64_hp-5500-ei-5500-si-switch-series-configuration-guide-2155.png "Page 2156
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[DeviceC] rrpp enable
4. Configure Device D:
# Create VLANs 1 and 2, map VLAN 1 to MSTI 1 an d VLAN 2 to MSTI 2, and activate MST region
configuration.
system-view
[DeviceD] vlan 1 to 2
[DeviceD] stp region-configuration
[DeviceD-mst-region] instance 1 vlan 1
[DeviceD-mst-region] instance 2 vlan 2
[DeviceD-mst-region] active region-configuration
[DeviceD-mst-region] quit
# Cancel the physical state change suppression interval setting on GigabitEthernet 1/0/1 and
GigabitEthernet 1/0/2,...")
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[DeviceD-rrpp-domain2] ring 1 node-mode transit primary-port gigabitethernet 1/0/1
secondary-port gigabitethernet 1/0/2 level 0
[DeviceD-rrpp-domain2] ring 1 enable
[DeviceD-rrpp-domain2] quit
# Enable RRPP.
[DeviceD] rrpp enable
5. Configure Device E:
# Create VLAN 2, map VLAN 2 to MSTI 2, and activate MST region configuration.
system-view
[DeviceE] vlan 2
[DeviceE-vlan2] quit
[DeviceE] stp region-configuration
[DeviceE-mst-region] instance 2 vlan 2
[DeviceE-mst-region] active...](http://img.usermanuals.tech/thumb/36/58909/w64_hp-5500-ei-5500-si-switch-series-configuration-guide-2156.png "Page 2157
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[DeviceD-rrpp-domain2] ring 1 node-mode transit primary-port gigabitethernet 1/0/1
secondary-port gigabitethernet 1/0/2 level 0
[DeviceD-rrpp-domain2] ring 1 enable
[DeviceD-rrpp-domain2] quit
# Enable RRPP.
[DeviceD] rrpp enable
5. Configure Device E:
# Create VLAN 2, map VLAN 2 to MSTI 2, and activate MST region configuration.
system-view
[DeviceE] vlan 2
[DeviceE-vlan2] quit
[DeviceE] stp region-configuration
[DeviceE-mst-region] instance 2 vlan 2
[DeviceE-mst-region] active...")
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# Enable RRPP.
[DeviceE] rrpp enable
6. Configure Device F:
# Create VLAN 1, map VLAN 1 to MSTI 1, and activate MST region configuration.
system-view
[DeviceF] vlan 1
[DeviceF-vlan1] quit
[DeviceF] stp region-configuration
[DeviceF-mst-region] instance 1 vlan 1
[DeviceF-mst-region] active region-configuration
[DeviceF-mst-region] quit
# Cancel the physical state change suppression interval setting on GigabitEthernet 1/0/1 and
GigabitEthernet 1/0/2, disable the spanning tree fe...](http://img.usermanuals.tech/thumb/36/58909/w64_hp-5500-ei-5500-si-switch-series-configuration-guide-2157.png "Page 2158
95
# Enable RRPP.
[DeviceE] rrpp enable
6. Configure Device F:
# Create VLAN 1, map VLAN 1 to MSTI 1, and activate MST region configuration.
system-view
[DeviceF] vlan 1
[DeviceF-vlan1] quit
[DeviceF] stp region-configuration
[DeviceF-mst-region] instance 1 vlan 1
[DeviceF-mst-region] active region-configuration
[DeviceF-mst-region] quit
# Cancel the physical state change suppression interval setting on GigabitEthernet 1/0/1 and
GigabitEthernet 1/0/2, disable the spanning tree fe...")
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# Create RRPP ring group 1 on Device C, and add subrings 2 and 3 to the RRPP ring group.
[DeviceC] rrpp ring-group 1
[DeviceC-rrpp-ring-group1] domain 2 ring 2
[DeviceC-rrpp-ring-group1] domain 1 ring 3
8. Verify the configuration:
Use the display command to view RRPP configuration and operational information on each device.
Troubleshooting
Symptom
When the link state is normal, the master node cannot receive Hello packets, and the master node
unblocks the secondary port.
Analysis...](http://img.usermanuals.tech/thumb/36/58909/w64_hp-5500-ei-5500-si-switch-series-configuration-guide-2158.png "Page 2159
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# Create RRPP ring group 1 on Device C, and add subrings 2 and 3 to the RRPP ring group.
[DeviceC] rrpp ring-group 1
[DeviceC-rrpp-ring-group1] domain 2 ring 2
[DeviceC-rrpp-ring-group1] domain 1 ring 3
8. Verify the configuration:
Use the display command to view RRPP configuration and operational information on each device.
Troubleshooting
Symptom
When the link state is normal, the master node cannot receive Hello packets, and the master node
unblocks the secondary port.
Analysis...")
98 • Dedicated to dual uplink networks • Subsecond convergence • Easy to configure Terminology Smart link group A smart link group consists of only two member ports: the master and the slave ports. At a time, only one port is active for forwarding, and the other port is blocked and in standby state. When link failure occurs on the active port due to port shutdown or presence of unidirectional link for example, the standby port becomes active to take over and the original active port transits to the blocked state. As shown in Figure 24, P ort1 and Port2 of Device C and Port1 and Port2 of Device D each form a smart link group, with Port1 being active and Port2 being standby. Master/slave port Master port and slave port are two port roles in a smart link group. When both ports in a smart link group are up, the master port preferentially transits to the forwarding state, and the slave port stays in standby state. Once the master port fails, the slav e port takes over to forward traffic. As shown in Figure 24 , y ou can configure Port1 of Device C and Port1 of Device D as master ports, and Port2 of Device C and Port2 of Device D slave ports. Master/slave link The link that connects the master port in a smart link group is the master link. The link that connects the slave port is the slave link. Flush message Flush messages are used by a smart link group to notify other devices to refresh their MAC address forwarding entries and ARP/ND entries when link switchover occurs in the smart link group. Flush messages are common multicast data packets, and will be dropped by a blocked receiving port. Protected VLAN A smart link group controls the forwarding state of some data VLANs (protected VLANs). Different smart link groups on a port control different protected VL ANs. The state of the port in a protected VLAN is determined by the state of the port in the smart link group. Transmit control VLAN The transmit control VLAN is used for transmitting flush messages. When link switchover occurs, the devices (such as Device C and Device D in Figure 24 ) br oadcast flush messages within the transmit control VLAN. Receive control VLAN The receive control VLAN is used for receiving and processing flush messages. When link switchover occurs, the devices (such as Device A, Device B, and Device E in Figure 24) r eceive and process flush messages in the receive control VLAN and refresh their MAC address forwarding entries and ARP/ND entries.
99 How Smart Link works Link backup mechanism As shown in Figure 24, the link on Port1 of Device C is the master link, and the link on Port2 of Device C is the slave link. Typically, Port1 is in forwarding state, and Port2 is in standby state. When the master link fails, Port2 takes over to forward traffic an d Port1 is blocked and placed in standby state. NOTE: When a port switches to the forwarding state, the system outputs log information to notify the user of the port state change. Topology change mechanism Because link switchover can outdate the MAC addres s forwarding entries and ARP/ND entries on all devices, you need a forwarding entry update mechan ism to ensure proper transmission. By far, the following two update mechanisms are provided: • Uplink traffic-triggered MAC address learning, where update is triggered by uplink traffic. This mechanism is applicable to envi ronments with devices not supporting Smart Link, including devices of other vendors’. • Flush update where a Smart Link-enabled device updates its information by transmitting flush messages over the backup link to its upstream devices. This mechanism requires the upstream devices to be capable of recognizing Smart Link flush messages to update its MAC address forwarding entries and ARP/ND entries. Role preemption mechanism As shown in Figure 24 , the link on Port1 of Device C is the master link, and the link on Port2 of Device C is the slave link. Once the master link fails, Port1 is automatically blocked and placed in standby state, and Port2 takes over to forward traffic. When the master link recovers, one of the following occurs: • If the smart link group is not configured with ro le preemption, to keep traffic forwarding stable, Port1 that has been blocked due to link failure do es not immediately take over to forward traffic. Rather, it stays blocked until the next link switchover. • If the smart link group is configured with role preemption, Port1 takes over to forward traffic as soon as its link recovers, and Port2 is automatically blocked and placed in standby state. Load sharing mechanism A ring network may carry traffic of multiple VLANs. Smart Link can forward traffic of different VLANs in different smart link groups, implementing load sharing. To implement load sharing, you can assign a port to multiple smart link groups (each configured with different protected VLANs), making sure that the state of the port is different in these smart link groups. In this way, traffic of different VLANs can be forwarded along different paths. You can configure protected VLANs for a smart link group by referencing Multiple Spanning Tree Instances (MSTIs). Smart Link collaboration mechanisms Collaboration between Smart Link and Monitor Link Smar t Link cannot sense by itself when faults occur on the uplink of the upstream devices, or when faults are cleared. To monitor the uplink status of the upstream devices, you can configure the Monitor Link
100 function to monitor the uplink ports of the upstream devices. Monitor Link adapts the up/down state of downlink ports to the up/down state of uplink ports, triggering Smart Link to perform link switchover on the downstream device. For more information about Monitor Link, see Configuring Monitor Link. Collaboration between Smart Link and CC of CFD Smart Link cannot sense by itself when faults (for example, unidirectional link, misconnected fibers, and packet loss) occur on the intermediate devices or network paths, or when faults are cleared. To check the link status, Smart Link ports must use link detection prot ocols. When a fault is detected or cleared, the link detection protocols inform Smart Link to switch over the links. With the collaboration between Smart Link and the Continuity Check (CC) function of Connectivity Fault Detection (CFD) configured, CFD notifies the ports of fault detection events on the basis of detection VLANs and detection ports. A port responds to a continuity check event only when the control VLAN of the smart link group to which it belongs matches the detection VLAN. For more information about the CC function of CFD, see Configuring CFD. Smart Link configuration task list A smart link device is a device that supports Smart Link and is configured with a smart link group and a transmit control VLAN for flush message transmission. Device C and Device D in Figure 24 ar e two examples of smart link devices. An associated device is a device that supports Sm art Link and receives flush messages sent from the specified control VLAN. Device A, Device B, and Device E in Figure 24 ar e examples of associated devices. Complete the following tasks to configure Smart Link: Task Remarks Configuring a Smart Link device Configuring protected VL ANs for a smart link group Required Configuring member ports for a smart link group Required Configuring role preemption for a smart link group Optional Enabling the sending of flush messages Optional Configuring the collaboration between Smart Link and CC of CFD Optional Configuring an associated device Enabling the receiving of flush messages Required Configuring a Smart Link device Configuration prerequisites • Before configuring a port as a smart link group member, shut down the port to prevent loops. You can bring up the port only after completing the smart link group configuration.
101
• Disable the spanning tree feature and RRPP on the ports that you want to add to the smart link group,
and make sure that the ports are not member port s of any aggregation group or service loopback
group.
NOTE:
A loop may occur on the network during the time when the spanning tree feature is disabled but Smart Link
has not yet taken effect on a port.
Configuring protected VLANs for a smart link group
You can configure protected VLANs for a smart link group by referencing MSTIs. Before configuring the
protected VLANs, configure the mappings between MSTIs and the VLANs to be protected. (In PVST mode,
the system automatically maps VLANs to MSTIs.) For more information about MSTI and PVST, see Layer
2—LAN Switching Configuration Guide .
To configure the protected VLANs for a smart link group:
Step Command Remarks
1. Enter system view.
system-view N/A
2.
Enter MST region view. stp region-configuration Not required in PVST mode.
For more information about the
command, see
Layer 2—LAN
Switching Command Reference .
3. Configure the
VLAN-to-instance mapping
table. Approach 1:
instance
instance-id vlan vlan-list
Approach 2:
vlan-mapping modulo modulo Optional.
Use either approach.
All VLANs in an MST region are
mapped to CIST (MSTI 0) by
default.
Not required in PVST mode.
For more information about the
commands, see Layer 2—LAN
Switching Command Reference
.
4. Activate MST region
configuration manually. active
region-configuration Not required in PVST mode.
For more information about the
command, see
Layer 2—LAN
Switching Command Reference .
5. Display the currently activated
configuration information of
the MST region. display stp region-configuration
[ |
{ begin | exclude | include }
regular-expression ] Optional.
Available in any view.
You can view the VLANs mapped
to the MSTIs.
For more information about the
command, see
Layer 2—LAN
Switching Command Reference .
6. Return to system view.
quit Not required in PVST mode.
7. Create a smart link group,
and enter smart link group
view. smart-link group
group-id N/A
102
Step Command Remarks
8. Configure protected VLANs
for the smart link group. protected-vlan reference-instance
instance-id-list
By default, no protected VLAN is
configured for a smart link group.
Configuring member ports for a smart link group
You can configure member ports for a smart link group ei
ther in smart link group view or in interface view.
The configurations made in these two views have the same effect.
In smart link group view
To configure member ports for a smart link group in smart link group view:
Step Command
1. Enter system view.
system-view
2. Create a smart link group, and enter smart link
group view. smart-link group
group-id
3. Configure member ports for a smart link group. port interface-type interface-number { master | slave }
In interface view
To configure member ports for a smart link group in interface view:
Step Command
1. Enter system view. system-view
2. Enter Layer 2 Ethernet interface view or layer 2
aggregate interface view. interface
interface-type interface-number
3. Configure member ports for a smart link group. port smart-link group group-id { master | slave }
Configuring role preemption for a smart link group
Step Command Remarks
1. Enter system view.
system-view N/A
2. Create a smart link group,
and enter smart link group
view. smart-link group
group-id N/A
3. Enable role preemption.
preemption mode role By default, the device works in the
non-preemption mode.
4.
Configure the preemption
delay. preemption delay
delay-time Optional.
1 second by default.
NOTE:
The preemption delay configuration takes effect only after role preemption is enabled.
103 Enabling the sending of flush messages The control VLAN configured for a smart link group must be different from that configured for any other smart link group. Make sure the configured control VLAN already exists, and assign the smart link group member ports to the control VLAN. The control VLAN of a smart link group should also be one of its protected VLANs. Do not remove the control VLAN. Otherwise, flush messages cannot be sent properly. To enable the sending of flush messages: Step Command Remarks 1. Enter system view. system-view N/A 2. Create a smart link group, and enter smart link group view. smart-link group group-id N/A 3. Enable flush update in the specified control VLAN. flush enable [ control-vlan vlan-id ] Optional. By default, flush update is enabled, and VLAN 1 is the control VLAN. Configuring the collaboration between Smart Link and CC of CFD Step Command Remarks 1. Enter system view. system-view N/A 2. Enter Layer 2 Ethernet interface view. interface interface-type interface-number N/A 3. Configure the collaboration between Smart Link and the CC function of CFD on the port. port smart-link group group-id track cfd cc Optional. By default, the collaboration between Smart Link and the CC function of CFD is not configured. NOTE: When configuring the collaboration between Smart Link and the CC function of CFD on a smart link member port, make sure that the control VLAN of the smart link group to which the port belongs matches the detection VLAN of the CC function of CFD.
104
Configuring an associated device
Configuration prerequisites
Disable the spanning tree feature on the associated device’s ports that connect to the member ports of
the smart link group; otherwise, the ports will discard flush messages when they are not in the forwarding
state in case of a topology change.
Enabling the receiving of flush messages
You do not need to enable all ports on the associat ed devices to receive flush messages sent from the
transmit control VLAN; you only need to enable those on the master and slave links between the smart
link device and the destination device.
Configuration guidelines
• Configure all the control VLANs to receive flush messages.
• If no control VLAN is specified for processing flush messages, the device forwards the received flush
messages without processing them.
• Make sure the receive control VLAN is the same as the transmit control VLAN configured on the
smart link device. If they are not the same, the associated device will forward the received flush
messages directly without any processing.
• Do not remove the control VLANs. Otherwise, flush messages cannot be sent properly.
• Make sure the control VLANs are existing VLANs, and assign the ports capable of receiving flush
messages to the control VLANs.
Configuration procedure
To enable the receiving of flush messages:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view. interface
interface-type
interface-number N/A
3.
Configure the control VLANs
for receiving flush messages. smart-link flush enable
[ control-vlan vlan-id-list ] By default, no control VLAN exists
for receiving flush messages.
Displaying and maintaining Smart Link
Task Command Remarks
Display smart link group information. display smart-link group
{ group-id |
all } [ | { begin | exclude | include }
regular-expression ] Available in any view
Display information about the received
flush messages.
display smart-link flush
[ | { begin |
exclude | include } regular-expression ] Available in any view
105 Task Command Remarks Clear the statistics about flush messages. reset smart-link statistics Available in user view Smart Link configuration examples Single smart link group configuration example Network requirements As shown in Figure 25 , Device C and Device D are smart link devices, and Device A, Device B, and Device E are associated devices. Traffic of VLANs 1 through 30 on Device C and Device D are dually uplinked to Device A. Configure Smart Link on Device C and Device D for dual uplink backup. Figure 25 Network diagram Configuration procedure 1. Configure Device C: # Create VLANs 1 through 30, map these VLANs to MSTI 1, and activate the MST region configuration. system-view [DeviceC] vlan 1 to 30 [DeviceC] stp region-configuration [DeviceC-mst-region] instance 1 vlan 1 to 30 [DeviceC-mst-region] active region-configuration [DeviceC-mst-region] quit # Shut down GigabitEthernet 1/0/1 and Gigabi tEthernet 1/0/2, disable the spanning tree feature on GigabitEthernet 1/0/1 and GigabitE thernet 1/0/2 separately, configure them as trunk ports, and assign them to VLANs 1 through 30. [DeviceC] interface gigabitethernet 1/0/1 [DeviceC-GigabitEthernet1/0/1] shutdown
106 [DeviceC-GigabitEthernet1/0/1] undo stp enable [DeviceC-GigabitEthernet1/0/1] port link-type trunk [DeviceC-GigabitEthernet1/0/1] port trunk permit vlan 1 to 30 [DeviceC-GigabitEthernet1/0/1] quit [DeviceC] interface gigabitethernet 1/0/2 [DeviceC-GigabitEthernet1/0/2] shutdown [DeviceC-GigabitEthernet1/0/2] undo stp enable [DeviceC-GigabitEthernet1/0/2] port link-type trunk [DeviceC-GigabitEthernet1/0/2] port trunk permit vlan 1 to 30 [DeviceC-GigabitEthernet1/0/2] quit # Create smart link group 1, and configure all VLANs mapped to MSTI 1 as the protected VLANs. [DeviceC] smart-link group 1 [DeviceC-smlk-group1] protected-vlan reference-instance 1 # Configure GigabitEthernet 1/0/1 as the master port and GigabitEthernet 1/0/2 as the slave port for smart link group 1. [DeviceC-smlk-group1] port gigabitethernet1/0/1 master [DeviceC-smlk-group1] port gigabitethernet1/0/2 slave # Enable flush message sending in smart link gr oup 1, and configure VLAN 10 as the transmit control VLAN. [DeviceC-smlk-group1] flush enable control-vlan 10 [DeviceC-smlk-group1] quit # Bring up GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 again. [DeviceC] interface gigabitethernet 1/0/1 [DeviceC-GigabitEthernet1/0/1] undo shutdown [DeviceC-GigabitEthernet1/0/1] quit [DeviceC] interface gigabitethernet 1/0/2 [DeviceC-GigabitEthernet1/0/2] undo shutdown [DeviceC-GigabitEthernet1/0/2] quit 2. Configure Device D: # Create VLANs 1 through 30, map these VLANs to MSTI 1, and activate the MST region configuration. system-view [DeviceD] vlan 1 to 30 [DeviceD] stp region-configuration [DeviceD-mst-region] instance 1 vlan 1 to 30 [DeviceD-mst-region] active region-configuration [DeviceD-mst-region] quit # Shut down GigabitEthernet 1/0/1 and Gigabi tEthernet 1/0/2, disable the spanning tree feature on GigabitEthernet 1/0/1 and GigabitE thernet 1/0/2 separately, configure them as trunk ports, and assign them to VLANs 1 through 30. [DeviceD] interface gigabitethernet 1/0/1 [DeviceD-GigabitEthernet1/0/1] shutdown [DeviceD-GigabitEthernet1/0/1] undo stp enable [DeviceD-GigabitEthernet1/0/1] port link-type trunk [DeviceD-GigabitEthernet1/0/1] port trunk permit vlan 1 to 30 [DeviceD-GigabitEthernet1/0/1] quit [DeviceD] interface gigabitethernet 1/0/2
107 [DeviceD-GigabitEthernet1/0/2] shutdown [DeviceD-GigabitEthernet1/0/2] undo stp enable [DeviceD-GigabitEthernet1/0/2] port link-type trunk [DeviceD-GigabitEthernet1/0/2] port trunk permit vlan 1 to 30 [DeviceD-GigabitEthernet1/0/2] quit # Create smart link group 1, and configure all VLANs mapped to MSTI 1 as the protected VLANs. [DeviceD] smart-link group 1 [DeviceD-smlk-group1] protected-vlan reference-instance 1 # Configure GigabitEthernet 1/0/1 as the master port and GigabitEthernet 1/0/2 as the slave port for smart link group 1. [DeviceD-smlk-group1] port gigabitethernet1/0/1 master [DeviceD-smlk-group1] port gigabitethernet1/0/2 slave # Enable flush message sending in smart link gr oup 1, and configure VLAN 20 as the transmit control VLAN. [DeviceD-smlk-group1] flush enable control-vlan 20 [DeviceD-smlk-group1] quit # Bring up GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 again. [DeviceD] interface gigabitethernet 1/0/1 [DeviceD-GigabitEthernet1/0/1] undo shutdown [DeviceD-GigabitEthernet1/0/1] quit [DeviceD] interface gigabitethernet 1/0/2 [DeviceD-GigabitEthernet1/0/2] undo shutdown [DeviceD-GigabitEthernet1/0/2] quit 3. Configure Device B: # Create VLANs 1 through 30. system-view [DeviceB] vlan 1 to 30 # Configure GigabitEthernet 1/0/1 as a trunk port, and assign it to VLANs 1 through 30. Enable flush message receiving on it, and configure VLAN 10 and VLAN 20 as the receive control VLANs.. [DeviceB] interface gigabitethernet 1/0/1 [DeviceB-GigabitEthernet1/0/1] port link-type trunk [DeviceB-GigabitEthernet1/0/1] port trunk permit vlan 1 to 30 [DeviceB-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 2\ 0 [DeviceB-GigabitEthernet1/0/1] quit # Configure GigabitEthernet 1/0/2 as a trunk port , and assign it to VLANs 1 through 30. Disable the spanning tree feature and enable flush message receiving on it, and configure VLAN 20 as the receive control VLAN. [DeviceB] interface gigabitethernet 1/0/2 [DeviceB-GigabitEthernet1/0/2] port link-type trunk [DeviceB-GigabitEthernet1/0/2] port trunk permit vlan 1 to 30 [DeviceB-GigabitEthernet1/0/2] undo stp enable [DeviceB-GigabitEthernet1/0/2] smart-link flush enable control-vlan 20 [DeviceB-GigabitEthernet1/0/2] quit # Configure GigabitEthernet 1/0/3 as a trunk port , and assign it to VLANs 1 through 30. Disable the spanning tree feature and enable flush message receiving on it, and configure VLAN 10 as the receive control VLAN.