Managing
Resources
Cisco VTS enables you
to define global and device local resource pools so that the resources can be
allocated when VMs or tenants are added.
You can define the
multicast addresses that can be allocated sequentially for VXLAN tunnel
creation so that you do not have to manage them separately. VNI and multicast
pools are global.
You can define the
multicast addresses as global resource pool. These multicast addresses will be
allocated sequentially when new VXLAN tunnels are created. Network
administrator can define multiple multicast address ranges.
VLAN range can be
assigned or each device. You can also group devices and assign VLAN range to
the device group.
Additionally, for
Nexus 7000 devices, you can assign VLAN resources at physical or FEX interface
level. You can also group the interfaces from different devices and assign VLAN
ranges to the interface group.
Note |
Default resource
pools are device-specific VLAN pools that are also created automatically when
leafs are added to the inventory. The default VLAN range is from 1001 to 2000.
You can modify the range as per your requirement.
|
You can edit the range
and also delete any unused ranges.
This chapter has the
following sections:
Specifying Global
VNI Range
You can specify the
global VNI range. To do this:
| Step 1
| Go to
. The Resources / Global VNI Pool window appears.
In
Global VNI Pool window, the range table lists the following details:
- Range From
- Range To
- Restricted Range - data is
Boolean (Yes or No)
- Used
- Available
- Total
|
| Step 2
| Click the
Add (+)
icon. Add VNI Pool popup appears.
|
| Step 3
| Specify the
ranges, select the
Restricted
Range radio button to enable or disable the range, and click
Save.
|
| Step 4
| To edit the
range, select the Range From check box, and click the
Edit icon as
required .
All
ranges are editable. Overlapping of range is allowed if Restricted Range field
is Yes.
|
| Step 5
| To delete the
range, select the Range From check box, and click the
Delete (X)
icon.
|
Specifying VLAN
Range
VLAN ranges needs to
be created for all the leafs and DCIs. You can create device specific VLAN
range. You can also group devices together, and create a VLAN range for the
group.
For Cisco Nexus 7000
devices, you can specify VLAN range per interface. You can also group
interfaces together and specify ranges.
When you add Nexus
7000 devices to inventory, Cisco VTS checks whether these devices are in vPC
and the compute links attached to these vPC devices are dual homed. If the
devices are in vPC, VTC automatically creates a device group containing these
two devices. This device group would have BD range associated with it, which
VTS uses to provision overly networks. The default BD range is 1000 to 2000.
you can configure this value.
-
For computes
attached to Cisco Nexus 7000 switch as single homed, Cisco VTS automatically
creates a default device interface pool per interface attached to the compute.
This default interface pool is of name vts-Device-InterfaceName with a default
VLAN range of 2-4094.
-
If a compute
attached to the Cisco Nexus 7000 is dual homed, Cisco VTS automatically creates
a default device interface group pool containing the dual homed interfaces of
two switches. This default interface group pool is of name
vts-group-<number> with a default VLAN range of 0-4096.
-
For single homed
and non vPC interfaces, Cisco VTS creates a default per interface level VLAN
range of 0-4096.
-
If computes are
attached to FEX, the interface pool with default range is created for the FEX
device. This FEX VLAN pool is of name vts-device-<fexId> with default
range of 0-4096.
-
For computes
attached in vPC to two different FEX, Cisco VTS automatically creates a group
for the two interfaces going to two different FEXs. Overlay network
provisioning on this vPC compute uses a common VLAN from the two FEXs ranges.
Cisco VTS only
allows grouping of two FEXs to form a logical group. It does not allow a FEX
from one logical group to form a grouping with a FEX from a different logical
group. For example, if a host compute1 is connected in vPC to two FEXs 101 and
102, these two FEXs will form a logical group. Cisco VTS does not allow having
a host compute2 connected in vPC to FEX 102 and FEX 103. This is because the
same VLAN across multiple FEXs for a given network would be difficult to
maintain.
- The default VLAN pool of
a device gets deleted when the device is added to a Device Group. This is
because it will be using the default VLAN pool of the Device Group once it is
part of the group. However, when the device is removed from the Device Group,
Cisco VTS does not add back the original VLAN pool to it. The Cisco VTS admin
has to add the VLAN pool back to the device, manually.
Note |
We recommend that
you check the supported VLAN range for the device that is created
automatically, and also take a note of the reserved VLAN range. Every device
has its own limitation. You need to ensure that you are not using a reserved
VLAN range for your particular device.
|
See the following
sections for details:
Specifying Device
VLAN Range
To specify device
VLAN pool:
| Step 1
| Go to
. The Resource / Devices window
appears. It lists all the device VLAN ranges.
|
| Step 2
| Click
Devices.
|
| Step 3
| Click the
Add
(+) icon. The Add Range pop up window appears.
|
| Step 4
| Enter the Device
details, and specify the From and To values.
The device name
should match the leaf name in the inventory. From is VLAN start number and To
is VLAN end number to be used for the leaf.
|
| Step 5
| Select the
Restricted
Range radio button to enable or disable the range, and click
Save.
To edit a device
specific VLAN pool, select the Device check box, and click the
Edit icon.
To delete a
device specific VLAN pool, select the Device check box, and click the
Delete
(X) icon.
|
Specifying Group
VLAN Range
You can group
devices and assign VLAN range for the device group. To specify VLAN range for a
device group:
| Step 1
| Go to
. The Resource / Devices window
appears.
|
| Step 2
| Click
Groups.
|
| Step 3
| Click the
Add
(+) icon. The Set Range pop up window appears.
|
| Step 4
| Enter the Group
Name and select the devices that need to be part of the group. Click the help
icon for guidelines about the group name.
|
| Step 5
| Select the
Restricted
Range radio button to enable or disable the range, and Click
Save.
|
| Step 6
| To view the
devices associated with a group, select the group and click
Associated
Devices.
|
| Step 7
| Click
Save. The group gets created and is listed in the
table.
|
| Step 8
| To add range to
the group, select the group and click the
Add
(+) icon.
|
| Step 9
| Specify the From
and To values.
|
| Step 10
| Click
Save.
|
| Step 11
| To edit a
device specific VLAN pool, select the Device check box, and click the
Edit icon.
All
ranges are editable.
|
| Step 12
| To delete a
group specific VLAN pool, select the Device check box, and click the
Delete (X)
icon.
|
Specifying Multicast
IP Pool
You can specify the
number of overlay networks that can be mapped to a single multicast address.
Choose Enter VNI(NetworkCount) from the drop down, and enter the number of
networks you want to map to a single multicast address. You can also opt to
have all networks to map to a single multicast IP. To do this choose All
Network from the drop down.
You can specify the
IP range. The range must be within the multicast IP address range configured on
leaf devices via day zero configuration file. The valid range is from 239.0.0.0
to 239.255.255.255.
| Step 1
| Go to
. The Resources / Multicast IP Pool window
appears.
|
| Step 2
| Click the
Add
(+) icon, and enter the Start and End values.
Click the
Question Mark (?) icon to view the Multicast IP
address range.
Use the
Restricted Range toggle button to restrict or disallow allocations from this
range.
|
| Step 3
| Click
Save.
To delete
Multicast IP Pool, select the desired check box, and click the
Delete
(X) icon.
|
Specifying Interface
VLAN Range
To specify VLAN
range for an interface:
| Step 1
| Go to
. The Resource / Devices window
appears.
|
| Step 2
| Click
Interfaces. It lists all the Cisco Nexus 7000
devices.
|
| Step 3
| Click on the
corresponding chassis icon.
The Interfaces
pop up window appears. You can view the Physical Interfaces and the FEX
interfaces.
- Click
Physical Interfaces tab to view the physical interface.
The
interfaces are displayed based on odd and even numbered interfaces, with the
odd numbered interfaces on top and the even numbered interfaces at the bottom.
You can
control the display using the filter options.
.
- Click
Physical Interfaces tab to view the physical interface.
Reserved
ports are grayed out. Editing is enabled for ports that are connected to
computes.
Clicking on
an available port shows the ranges.
- To edit the
VLAN range, click the Edit button.
You can use
the Restricted range toggle button to restrict the range.
- Click
Save.
|
| Step 4
| Click the FEX
Interfaces tab to view the details about the FEX modules. By default, the range
for the first FEX module is shown.
You can control
the display using the filter options.
.
- To edit the
VLAN range associated with the FEX module, click the Edit button.
You can use
the Restricted range toggle button to restrict the range.
- Click
Save.
|
Creating Interface
Groups
You can group
interfaces and assign VLAN ranges for the group. You can create groups for
physical interfaces or FEX interfaces and assign ranges.
Note |
You cannot group
physical and FEX interfaces together.
|
| Step 1
| Go to
. The Resource / Devices window
appears.
|
| Step 2
| Click
Interface Groups. It lists all the interface groups
for the Cisco Nexus 7000 devices.
|
| Step 3
| To add an
interface group, click the Add
(+) icon.
The Create
Interface Group pop up window appears.
|
| Step 4
| Enter a group
name.
|
| Step 5
| Choose a group
type—Physical Interface Group or FEX Interface Group.
To create a
physical interface group:
- Click
Physical Interface Group .
- Click
Select Devices to select the devices. The Select
Devices popup window appears.
- Click
Select Interfaces to select the interfaces. The
Select Interfaces popup window appears.
The
interfaces display sorted based on odd and even numbered interfaces, with the
odd numbered interfaces on top and the even numbered interfaces at the bottom.
You can
control the display using the filter options.
.
Reserved
ports are grayed out. Editing is enabled for ports that are connected to
computes.
- Click Define Ranges
to define VLAN ranges. The Define Ranges and Group
Details popup window appears.
You can use
the Restricted range toggle button to restrict a range.[Also, addinfo about the
Add button]
- Click
Review and Save. The Summary popup window displays
the interface group range details you have modified. Click
Edit if you need to modify any details. You can edit
the interface ranges, the devices in the group, or edit the interfaces you have
chosen for the device.
- Click
Save.
To delete an
interface group, select the group and click Delete
(X).
To create a FEX
interface group:
- Click
FEX Interface Group .
- Click
Select Devices to select the devices. The Select
Devices popup window appears.
- Click
Select Interfaces to select the interfaces. The
Select Interfaces popup window appears.
The
interfaces display sorted based on odd and even numbered interfaces, with the
odd numbered interfaces on top and the even numbered interfaces at the bottom.
You can
control the display using the filter options.
.
Reserved
ports are grayed out. Editing is enabled for ports that are connected to
computes.
- Click Define Ranges to define VLAN ranges. The Define
Ranges and Group Details popup window appears.
You can
use the Restricted range toggle button to restrict a range. You can add ranges
using the Add (+) button.
- Click
Review and Save. The Summary popup window displays
the interface group range details you have modified. Click
Edit if you need to modify any details. You can edit
the interface ranges, the devices in the group, or edit the FEX interfaces you
have chosen for the device.
- Click
Save.
To delete
an interface group, select the group and click Delete
(X).
Auto Select/Auto Delete
functionality
The auto
select/auto delete functionality gets triggered on the devices that have port
channel config on them from devices Day 0 config.
Only auto
delete functionality gets triggered on the devices that have Static Multi Homed
(SMH) group attached to them from VTC UI (Host Inventory page).
| Note
|
Auto select
functionality is not applicable for devices with only SMH group.
|
When you
select one of the peer ports/devices that is part of a system defined group
(port channel in this case), then the corresponding peer port/device also gets
auto selected and gets added to the interface group (both Physical and FEX
interface group).
If this is the only device in the interface group then the group
cannot be saved. If there are other devices in this group, user should be able
to save the group even after the system defined/SMH tagged group devices are
deleted
When you deselect one of the peer ports/devices that is part of a
system defined group (port channel in this case) or SMH group, then the
corresponding peer port/device also gets auto de-selected/deleted and gets
deleted from the interface group (both Physical and FEX interface group).
If this is the only device in the interface group then the group
cannot be saved. If there are other devices in this group, user should be able
to save the group even after the system defined/SMH tagged group devices are
deleted.
|
Important
Note
For versions earlier than 2.3.1, Cisco VTS restricted the use of
static allocation to within a range, for all resources, and all attempts to
allocate outside the range returned an exception. Currently, by default, ranges
are not required for static allocation. A static allocation may be done both
inside a range and outside it.
If you wish to enable the restriction, this can be done using REST
API. See the
Cisco VTS 2.5 Developer Guide for details
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