NETWORKING: GVRP - Configurations

As we discussed GVRP in previous posts, Here Plz check the basic commands for GVRP configuration used in Maipu switches.

GVRP Basic Commands

Command	Description	Configuration Mode
gvrp enable	Enable the gvrp function globally	config
no gvrp enable	Disable the gvrp function globally	config
gvrp enable	Enable the gvrp function on the port	config-port-XXX config-link-aggregation-XXX
no gvrp enable	Disable the gvrp function on the port	config-port-XXX config-link-aggregation-XXX
gvrp registration{ normal \| fixed \| forbidden}	*Configure the GVRP registration status of the port	config-port-XXX config-link-aggregation-XXX
gvrp join-time value	Configure the join-time value of the port	config-port-XXX config-link-aggregation-XXX
no gvrp join-time	Recover the join-time of the port to the default value	config-port-XXX config-link-aggregation-XXX
gvrp leave-time value	Configure the leave-time value of the port	config-port-XXX config-link-aggregation-XXX
no gvrp leave-time	Recover the leave-time of the port to the default value	config-port-XXX config-link-aggregation-XXX
gvrp leaveall-time value	Set the leaveall value	config-port-XXX config-link-aggregation-XXX
no gvrp leaveall-time	Recover the default value of leaveall	config-port-XXX config-link-aggregation-XXX

The GVRP function can only be configured on the trunk port.

gvrp enable

The command is used to enable the GVRP function globally. The no format of the command is used to disable the function.

gvrp enable

no gvrp enable

Configuration mode: Global configuration mode

Default status: The function is disabled.

gvrp enable

The command is used to enable the GVRP function in the port configuration mode. The no format of the command is used to disable the GVRP function.

gvrp enable

no gvrp enable

Configuration mode: Port configuration mode

Default status: The function is disabled.

gvrp registration

The command is used to configure the registration mode of the port GVRP function in the port mode.

gvrp registration { normal | fixed | forbidden}

Syntax	Description
Normal	The port registration mode is normal mode. Allow the port to dynamically register and de-register VLAN, and spread the dynamic VLAN and static VLAN information.
Fixed	The port registration mode is the fixed mode. Prohibit the port from registering VLAN dynamically. The port only spreads the static VLAN information, but does not spread dynamic VLAN information. That is to say, the trunk port that is set as Fixed mode allows all VLANs to pass, but the actual passed VLANs are only those configured manually.
Forbidden	The port registration mode is forbidden mode. Prohibit the port from registering VLAN dynamically or spreading any VLAN information except for VLAN1. That is to say, the trunk port that is configured as Forbidden mode allows all VLANs to pass, but the actual passed VLAN is only VLAN1.

Configuration mode: Port configuration mode

Default status: The default value is normal.

gvrp join-time

The command is used to configure join-time in the port mode. The no format of the command is used to recover the default value.

gvrp join-time value

no gvrp join-time

Syntax	Description
Value	The value of leaveall-time; the value range is 1-8191s

Configuration mode: Port configuration mode

Default status: The default value is 20s.

Let’s see configurations for GVRP for better understanding. This configurations testing are done for

Maipu routers.

Instance 1

GVRP configuration instance 1

Description

The above figure is the GVRP application network 1. Register the vlan attributes dynamically before the device. Enable the GVRP function on switch A and switch B. By default, the registration modes of the ports on the two devices are normal and allow all VLANs to pass.

The configuration of switch A:

Command	Description
switch (config)# gvrp enable	Enable the GVRP function globally
switch (config)# port 0/1	Enter the port mode (support the aggregation port)
switch (config-port-range)# port mode trunk	Configure the port as the trunk port
switch (config-port-range)# port trunk allowed vlan all	Configure the port to allow all VLANs to pass
switch (config-port-range)# gvrp enable	Enable the GVRP function on the port
switch (config)# vlan 2	Create VLAN2 statically

The configuration of switch B:

Command	Description
switch (config)# gvrp enable	Enable the GVRP function globally
switch (config)# port 0/1	Enter the port mode (support the aggregation port)
switch (config-port-range)# port mode trunk	Configure the port as the trunk port
switch (config-port-range)# port trunk allowed vlan all	Configure the port to allow all VLANs to pass
switch (config-port-range)# gvrp enable	Enable the GVRP function on the port
switch (config)# vlan 3	Create VLAN3 statically

Result - The above configuration reflects, switch A creates vlan3 dynamically and switch B creates vlan2 dynamically.

Instance 2

GVRP configuration instance 2

Description

Register the vlan attributes dynamically before the device. Enable the GVRP function on switch A and switch B. The port registration mode of switch A is fixed; the port registration mode of switch B is the default normal. The ports on the two devices allow all VLANs to pass.

The configuration of switch A:

Command	Description
switch (config)# gvrp enable	Enable the GVRP function globally
switch (config)# port 0/1	Enter the port mode (support the aggregation port)
switch (config-port-range)# port mode trunk	Configure the port as the trunk port
switch (config-port-range)# port trunk allowed vlan all	Configure the port to allow all VLANs to pass
switch (config-port-range)# gvrp enable	Enable the GVRP function on the port
switch (config-port-range)# gvrp registration fixed	Configure the registration mode of the port as fixed
switch (config)# vlan 2	Create VLAN2 statically

The configuration of switch B:

Command	Description
switch (config)# gvrp enable	Enable the GVRP function globally
switch (config)# port 0/1	Enter the port mode (support the aggregation port)
switch (config-port-range)# port mode trunk	Configure the port as the trunk port
switch (config-port-range)# port trunk allowed vlan all	Configure the port to allow all VLANs to pass
switch (config-port-range)# gvrp enable	Enable the GVRP function on the port
switch (config)# vlan 3	Create VLAN3 statically

Result - After the above configuration, vlan3 is not created dynamically on switch A, while vlan 2 is created dynamically on switch B.

Instance 3

GVRP configuration instance 3

Description

The above figure is the GVRP application network 3. Prevent registering the vlan attributes dynamically before the device. Enable the GVRP function on switch A and switch B. The port registration mode of switch A is forbidden; the port registration mode of switch B is the default normal. The ports on the two devices allow all VLANs to pass.

The configuration of switch A:

Command	Description
switch (config)# gvrp enable	Enable the GVRP function globally
switch (config)# port 0/1	Enter the port mode (support the aggregation port)
switch (config-port-range)# port mode trunk	Configure the port as the trunk port
switch (config-port-range)# port trunk allowed vlan all	Configure the port to allow all VLANs to pass
switch (config-port-range)# gvrp enable	Enable the GVRP function on the port
switch (config-port-range)# gvrp registration forbidden	Configure the registration mode of the port as forbidden
switch (config)# vlan 2	Create VLAN2 statically

The configuration of switch B:

Command	Description
switch (config)# gvrp enable	Enable the GVRP function globally
switch (config)# port 0/1	Enter the port mode (support the aggregation port)
switch (config-port-range)# port mode trunk	Configure the port as the trunk port
switch (config-port-range)# port trunk allowed vlan all	Configure the port to allow all VLANs to pass
switch (config-port-range)# gvrp enable	Enable the GVRP function on the port
switch (config)# vlan 3	Create VLAN3 statically

Result - After the above figuration, vlan is not created dynamically on switch A or switch B.

Instance 4

GVRP configuration instance 4

Description

Create the vlan dynamically in the network. Enable the GVRP function on each device. The GVRP function is also enabled on the interconnected ports of the devices. The ports are configured to allow all VLANs to pass. Here, you only need to create vlan10-20 statically on switch A and switch B so that the other devices can learn the VLAN attributes dynamically to create vlan 0-20 dynamically. The GVRP configurations on the devices are the same and the port registration modes all are the default normal mode.

The configuration of switch A-G:

Command	Description
switch (config)# gvrp enable	Enable the GVRP function globally
switch (config)# port 0/0-0/1	Enter port mode (switch A and G can configure only one port)
switch (config-port-range)# port mode trunk	Configure the port as the trunk port
switch (config-port-range)# port trunk allowed vlan all	Configure the port to allow all VLANs to pass
switch (config-port-range)# gvrp enable	Enable the GVRP function on the port

Result - After the above configuration, switch A-G all have vlan10-20. As a result, the vlan attributes can be spread and created dynamically in the network.

This fourth testing is related real time requirement. Every switch in network should learn about vlans in network.

Till now we saw configurations, Let’s monitoring commands.

Monitoring Commands

The query commands:

Command	Description
show gvrp	View the enabling of global GVRP
show gvrp gid	View the number of the created GIDs and the enabling of the GVRP in the system (for debugging)
show gvrp machine	View the number of the GVRP status machines in the system and the registration status of the related attributes (for debugging)
show gvrp mstp active-instance instNo	View the information about the active MSTP instance in GVRP (for debugging)
show gvrp queue event	View the GVRP event queue information (for debugging)
show gvrp queue timer	View the GVRP timer queue information (for debugging)
show gvrp queue pkg	View the PDU queue information received by GVRP (for debugging)
show gvrp state{ port portName \| link-aggregation aggId} [vlan vlanId]	View the registration status information of vlan attributes on the port (for debugging)
show gvrp state vlan vlanId	View the registered status information of the vlan attributes (for debugging)
show gvrp {port portNo \| link-aggregation aggId}	View the GVRP configuration information of the port

Monitoring Command Output:

View the global enabling status of GVRP and the result is as follows:

switch# show gvrp

Displayed Result	Description and Analysis
Gvrp is enabled	Enable the GVRP function globally

View the number of the created GIDs in the system and the enabling status of GVRP and the result is as follows:

switch# show gvrp gid

Displayed Result	Description and Analysis
Order port enable enableC 0 : port 0/0 1 1 1 : port 0/1 1 1	GVRP creates GID for port 0/0 and port 0/1; the global GVRP and the GVRP on the port are enabled.

View the number of the GVRP status machines in the system and the registration status of the related attributes, and the result is as follows:

switch# show gvrp machine

Displayed Result	Description and Analysis
Order VlanID RegCount 0 : 1 1 1 : 2 0	There are two vlan attributes in the system; vlan1 attribute is registered for only one time; vlan2 attribute is not registered.

View the information about the active MSTP instance in GVRP, and the result is as follows:

switch# show gvrp mstp active-instance 0

Displayed Result	Description and Analysis
InstCount : 2	The number of the active GIDs in instance 0
InstNo:Port
0 port 0/0 0 port 0/1	The ports of the active GID in instance 0 are port 0/0 and port 0/1