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This chapter describes how to configure virtual device context (VDC) resource templates on Cisco NX-OS devices.
This chapter includes the following sections:
•Information About VDC Resource Templates
•Licensing Requirements for VDC Templates
•Configuring VDC Resource Templates
•Field Descriptions for VDC Resource Templates
•Additional References for VDC Resource Templates
•Feature History for VDC Resource Templates
VDC resource templates set the minimum and maximum limits for shared physical device resources when you create the VDC. The Cisco NX-OS software reserves the minimum limit for the resource to the VDC. Any resources allocated to the VDC beyond the minimum are based on the maximum limit and availability on the device.
You can explicitly specify a VDC resource template or you can use the default VDC template provided by the Cisco NX-OS software. VDC templates set limits on the following resources:
•IPv4 multicast route memory
•IPv6 multicast route memory
•IPv4 unicast route memory
•IPv6 unicast route memory
•Port channels
•Switch Port Analyzer (SPAN) sessions
•VLANs
•Virtual routing and forwarding instances (VRFs)
Note The default IPv4 and IPv6 route memory available for all VDCs on the supervisor is 250 MB. Beginning with Cisco NX-OS Release 5.2(1), the default memory is 300 MB. This amount remains the same with both the 4-GB and the 8-GB supervisor (see Adding Memory to a Cisco Nexus 7000 Series Supervisor for information on 8-GB supervisor modules). You can have approximately 11,000 routes, each with 16 next hops, in 16 MB of route memory. The show routing memory estimate routes number-of-routes next-hops number-of-next-hops command shows the amount of unicast RIB (IPv4 RIB and IPv6 RIB) shared memory needed to support the specified number of routes and next hops.
If you do not set a limit for a resource in a VDC resource template, the default limits for that resource are the same as those in the default VDC resource template. Table 2-1 lists the default VDC resource template limits.
|
|
|
---|---|---|
IPv4 multicast route memory1 |
8 |
8 |
IPv6 multicast route memory1 |
2 |
2 |
IPv4 unicast route memory1 |
8 |
8 |
IPv6 unicast route memory1 |
4 |
4 |
Port channels |
0 |
768 |
SPAN sessions |
0 |
2 |
VLANs |
16 |
4096 |
VRFs |
16 |
8192 |
1 Route memory is in megabytes. |
Note You cannot change the limits in the default VDC resource template.
Note Only the network administrator can change a VDC template in the default VDC.
The following table shows the licensing requirements for this feature:
The following platform supports this feature. For platform-specific information, including guidelines and limitations, system defaults, and configuration limits, see the corresponding documentation.
|
|
---|---|
Cisco Nexus 7000 Series Switches |
The maximum amount of system resources assigned to a VDC is limited by the VDC resource template used when the VDC is created. You can create VDC resource templates to use when creating VDCs to use resource limits other than those provided in the default VDC resource template.
Note If you do not set limits for a resource in a VDC resource template, the default limits are the limits for that resource in the default VDC resource template (see Table 2-1).
You can add a VDC resource template.
Ensure that you have discovered the physical device using a username that has the network-admin role.
Step 1 From the Feature Selector pane, choose Virtual Devices.
Step 2 From the Summary pane, double-click the device to display the list of VDCs.
Step 3 Click the default VDC with the icon.
Step 4 From the Details pane, click the Resource Templates tab.
Step 5 Right-click in the Details pane and choose Add Template from the drop-down list.
Step 6 At the cursor, enter the new VDC resource template name and press the Enter key.
Step 7 From the menu bar, choose File > Deploy to apply your changes to the device.
You can add a resource limit to a VDC resource template.
Note You cannot change the configuration of the default templates.
Ensure that you have discovered the physical device using a username that has the network-admin role.
Create a VDC resource template (see the "Adding a VDC Resource Template" section).
Step 1 From the Feature Selector pane, choose Virtual Devices.
Step 2 From the Summary pane, double-click the device to display the list of VDCs.
Step 3 Click the default VDC with the icon.
Step 4 From the Details pane, click the Resource Templates tab.
Step 5 Double-click the VDC resource template.
Step 6 Right-click on the VDC resource template and choose Add Resource Limit from the drop-down list.
Step 7 Choose a VDC resource from the drop-down menu.
Step 8 In the limit cell under Minimum, enter the minimum limit.
Step 9 In the limit cell under Maximum, enter the maximum limit.
Step 10 From the menu bar, choose File > Deploy to apply your changes to the device.
You can change the values of a resource limit in a VDC resource template.
Note You can have a maximum of two SPAN monitoring sessions on your physical device.
Note You cannot change the configuration of the default resource templates.
Ensure that you have discovered the physical device using a username that has the network-admin role.
Ensure that a VDC resource template has been created in the default VDC (see the "Adding a VDC Resource Template" section).
Ensure that resource limits have been added to the VDC resource template (see the "Adding a Resource Limit to a VDC Resource Template" section).
Step 1 From the Feature Selector pane, choose Virtual Devices.
Step 2 From the Summary pane, double-click the device to display the list of VDCs.
Step 3 Click the default VDC with the icon.
Step 4 From the Details pane, click the Resource Templates tab.
Step 5 Double-click the VDC resource template.
Step 6 Click the limits to change and enter the new values.
Step 7 From the menu bar, choose File > Deploy to apply your changes to the device.
You can delete a resource limit from a VDC resource template.
Note You cannot change the configuration of the default resource templates.
Ensure that you have discovered the physical device using a username that has the network-admin role.
Ensure that a VDC resource template has been created in the default VDC (see the "Adding a VDC Resource Template" section).
Ensure that resource limits have been added to the VDC resource template (see the "Adding a Resource Limit to a VDC Resource Template" section).
Step 1 From the Feature Selector pane, choose Virtual Devices.
Step 2 From the Summary pane, double-click the device to display the list of VDCs.
Step 3 Click the default VDC with the icon.
Step 4 From the Details pane, click the Resource Templates tab.
Step 5 Double-click the VDC resource template to display the resource limits.
Step 6 Click the resource limit to delete.
Step 7 In the Details pane, right-click and choose Delete Resource Limit from the drop-down list.
Step 8 From the menu bar, choose File > Deploy to apply your changes to the device.
You can delete a VDC resource template.
Note You cannot delete the default resource templates.
Ensure that you have discovered the physical device using a username that has the network-admin role.
Ensure that a VDC resource template has been created in the default VDC (see the "Adding a VDC Resource Template" section).
Step 1 From the Feature Selector pane, choose Virtual Devices.
Step 2 From the Summary pane, double-click the device to display the list of VDCs.
Step 3 Click the default VDC with the icon.
Step 4 From the Details pane, click the Resource Templates tab.
Step 5 Click the VDC resource template.
Step 6 In the Details Pane, right-click and choose Delete Template from the drop-down list.
Step 7 From the menu bar, choose File > Deploy to apply your changes to the device.
This section includes the following topic:
•Field Description: Virtual Devices: Default VDC: Resource Template Tab
This tab allows you to configure VDC resource templates for the physical device.
For additional information related to implementing VDCs, see the following sections:
•Related Documents for VDC Resource Templates
Table 2-3 lists the release history for this feature.