CloudEngine Series Switches FAQs-4.3 VS

Latest reply: Sep 30, 2017 11:19:37 1252 1 0 0

4.3  VS

4.3.1  In Which Versions Can VS Be Configured on CE12800 and Is a License Required?

CE12800 series switches support VS in V100R002C00 and later versions, and each CE12800 can have a maximum of 16 VSs (including the Admin-VS) configured.

The VS function is under license control.

4.3.2  Do CE8800&7800&6800&5800 Series Switches Support VS?

Only CE12800 switches support VS, and CE8800&7800&6800&5800 series switches do not support VS.

4.3.3  How Do I Assign Ports to VSs?

VSs work in group mode and port mode. The Admin-AS cannot be configured and can be considered a VS in port mode.
  • All the ports on the same forwarding chip of an LPU must be assigned to VSs in group mode, as shown in Figure 4-11.
    Figure 4-11  Port assignment for VSs in group mode
    71f348f016db4de0bef66ac6991dc757
    To check which ports on an LPU belong to the same chip, run the display device port-map [ slot slot-id ] command in the user or system view.
    <HUAWEI> display device port-map slot 1
    -------------------------------------------------------------------------
    Slot    Type           Engine    Interface
    -------------------------------------------------------------------------
    1       CE-L24XS-EA    0         10GE1/0/0     - 10GE1/0/23
    -------------------------------------------------------------------------
    
    For example, if 24 ports on a CE-L24XS-EA belong to the same forwarding chip, all these ports will be assigned to VSs in group mode.
  • Any ports on an LPU can be assigned to VSs in port mode according to network requirements, as shown in Figure 4-12.
    Figure 4-12  Port assignment for VSs in port mode
    d279174b19c84d4db91118ab0bd1114a

4.3.4  Can VSs Directly Communicate?

Each VS can be considered an independent device. VSs cannot directly communicate even if they reside on the same physical device.

VSs can directly communicate only when they are connected using physical ports, similar to direct communication between physical devices.

4.3.5  How Do I Configure VSs?

0483b84a2be34a13b5325ce030050499 NOTE:

The following example describes basic stack configurations. For details, see the related product configuration manual.

<HUAWEI> system-view
[~HUAWEI] admin
[~HUAWEI-admin] virtual-system vs1      //Create a VS named vs1.
[*HUAWEI-admin-vs:vs1] port-mode group      //Set the VS mode to group mode. Two VS modes are available: group mode and port mode.
[*HUAWEI-admin-vs:vs1] assign interface 10GE 1/0/0      //Assign a physical port to VS.
Warning: All configurations of the interfaces will be deleted. All interfaces of
 the same group will be assigned. Continue? [Y/N]: y
[*HUAWEI-admin-vs:vs1] quit
[*HUAWEI-admin] commit
[~HUAWEI-admin] display virtual-system
---------------------------------------------
Name                             Status
---------------------------------------------
Admin-VS                         running
vs1                              running
---------------------------------------------
If the status of a VS is running, the VS is created.

4.3.6  How to Query Port Group Assignment Information on the CE12800 During VS Assignment?

The CE12800 supports two VS assignment modes:
  • Port mode: A port on an interface card can be allocated to any VS.

  • Port group mode: All ports on the same forwarding chip of an interface card must be assigned to the same VS.

During assignment of VSs in port group mode, learn about the mapping between ports and forwarding chips to facilitate port planning. You can run the display device port-map [ slot slot-id ] command on the CE12800 to view the mapping between ports and forwarding chips.

4.3.7  Can Ports on Different Cards Be Allocated to the Same VS?

You can allocate ports on different boards to the same VS.

4.3.8  Can I Reset a VS Individually? Will Reset of One VS Affect Other VSs?

You can reset a VS individually except Admin-VS. Resetting a VS does not affect other VSs.

4.3.9  Which Features Are Not Supported in a VS?

Support for most service features in a VS is the same as that on a physical device, except for the features listed in Table 4-6.
Table 4-6  Support for features in a VS

Feature

Support in a VS

Hardware management

Hardware operations, such as device restart, card reset, and e-label backup, can be performed only in the admin-VS and are not supported in non-admin-VSs. VS information such as CPU and memory usage can be viewed in non-admin-VSs.

Agile Controller-DCNOnly the admin-VS can connect to the Agile Controller-DCN.

Number of VTY users

The admin-VS supports a maximum of 21 VTY users.

In V100R003C00 and earlier versions, a non-admin-VS supports a maximum of 5 VTY users. In versions later than V100R003C00, a non-admin-VS supports a maximum of 20 VTY users.

Port splitPorts assigned to non-admin-VSs cannot be split.

CSS

  • CSS can only be configured in the admin-VS.
  • VSs can be created in a CSS. Configure the CSS before creating VSs. If VSs are created before configuring the CSS, the configuration may be lost.

  • Similar to a single switch, a CSS supports a maximum of 16 VSs.

  • In a CSS, dual-active detection (DAD) can only be configured in the admin-VS.

SVF
  • The SVF function can only be enabled in the admin-VS.

  • A fabric port can be configured in the non-admin-VS. Subsequently, all the ports of the leaf switches to which the fabric port connects belong to this VS.

ISSU

In-service software upgrade (ISSU) can only be configured in the admin-VS. All the VSs in the PS share the same version software. Therefore, when ISSU is configured in the admin-VS, the software versions of other VSs are also upgraded.

MPLS, GRE, L3VPN, VLL, PWE3, VPLS, EVN and multicast

  • Among all VSs in port mode, MPLS, GRE, L3VPN, VLL, PWE3, VPLS, EVN and multicast functions can only be configured in the admin-VS.

  • MPLS, GRE, L3VPN, VLL, PWE3, VPLS, EVN and multicast functions can be configured in any VS in group mode.

MPLS TE

In V100R003C00 and earlier versions, MPLS TE functions can only be configured in the admin-VS.

In V100R003C10 and later versions:
  • Among all VSs in port mode, MPLS TE functions can only be configured in the admin-VS.

  • MPLS TE functions can be configured in any VS in group mode.

TRILL

  • Transparent Interconnection of Lots of Links (TRILL) can be configured in the admin-VS if there is no VS in port mode. No VS in port mode can be configured after TRILL is configured in the admin-VS.

  • If VSs in port mode are configured, TRILL cannot be configured in any VS in port mode, including the admin-VS.

  • All VSs in group mode support TRILL configuration.

VXLAN

In V100R003C10 and V100R005C00, VXLAN takes effect only in the admin-VS.

From V100R005C10:
  • Among all VSs in port mode, VXLAN function can only be configured in the admin-VS.

  • VXLAN function can be configured in any VS in group mode.

M-LAG
  • Among all VSs in port mode, M-LAG can only be configured in the admin-VS.

  • M-LAG can be configured in any VS in group mode.

TCAM ACL customization
  • All VSs in group mode support TCAM ACL customization.
  • In earlier versions of V100R006C00, among VSs in port mode, only the admin-VS supports TCAM ACL customization. In V100R006C00 and later versions, the VS in port mode and TCAM ACL customization cannot be configured simultaneously.

NTP

NTP can only be configured in Admin-VS. After a VS is created, the non-Admin-VS system time is the same as the Admin-VS system time.

OpenFlow

A switch can set up an OpenFlow connection with the controller only in an admin-VS.

4.3.10  How Are Patch Files Loaded for VSs?

System patch files can only be loaded in the admin-VS, but not in each VS.

4.3.11  How Can I Switch from a VS Back to the Admin-VS?

After an administrator runs the switch virtual-system vs-name command in the user view to switch from the Admin-VS to a specified VS, you can run the quit command in the user view of the VS to exit from this VS and return to the user view of the Admin-VS.

4.3.12  How Many VSs Can Be Created on a CE12800?

A maximum of 16 VSs including the admin-VS can be created on a CE12800. When the default resource specifications are used, you can create seven VSs in port group mode. To create more VSs in port group mode, adjust the number of VLANs to be used by VSs.

4.3.13  Can VSs Be Created on CE12800 Switches After They Set Up a Stack?

VSs can be created on CE12800 switches after they set up a stack.

4.3.14  Can Ports of Different Stack Member Switches Be Allocated to the Same VS?

Ports of different stack member switches can be allocated to the same VS.

4.3.15  Why Cannot TRILL Be Configured in the Admin-VS After VSs Are Configured in Port Mode?

There are the following constraints for configuring Transparent Interconnection of Lots of Links (TRILL):

  • TRILL can be configured in the admin-VS if there is no VS in port mode. No VS in port mode can be configured after TRILL is configured in the admin-VS.
  • If VSs in port mode are configured, TRILL cannot be configured in any VS in port mode, including the admin-VS.
  • All VSs in group mode support TRILL configuration.

4.3.16  Can VSs in Group Mode and VSs in Port Mode Co-exist?

VSs in group mode and VSs in port mode can be configured on the same switch.

4.3.17  How Do I Change the Port Assignment Mode of a VS?

The port assignment mode that has been configured for a VS cannot be changed or deleted. To change the port assignment mode of a VS, delete this VS, create the VS again, and then specify a new port assignment mode for this VS.

4.3.18  Does a VS Have a Management Interface?

A VS has a management interface.

After a VS is created, the system virtualizes a management interface for this VS. An administrator can configure an independent IP address for each virtualized management interface.

4.3.19  How Do VSs Communicate?

VSs cannot communicate directly. If two VSs need to communicate, connect physical interfaces between the two VSs using cables and then configure services to enable them to communicate.

4.3.20  Does a VS Need to Be Restarted After Resources Are Configured for this VS?

After resources are configured for a VS, both this VS and the device do not need to be restarted.

4.3.21  How Do I Enter from the Admin-VS to a Non Admin-VS?

After creating a VS, an administrator can run the switch virtual-system vs-name command in the user view to enter from the Admin-VS to this created VS.

After entering the VS, you can run the quit command in the user view of this VS to exit this VS and return to the user view of the Admin-VS.

4.3.22  How Do I Assign a Port in a VS to Another VS?

Delete the port from the current VS and then add this port to another VS.

4.3.23  If Some Ports in a Group Are Configured as Stack Member Ports, Can Other Ports in This Group Be Assigned to a VS in Group Mode?

In versions earlier than V100R005C00, after some ports in a group have been configured as stack member ports, other ports in this group cannot be assigned to a VS in group mode.

In V100R005C00 and later versions, after some ports in a group have been configured as stack member ports, other ports in this group can be assigned to a VS in group mode.

4.3.24  Does Creating or Deleting a VS Require the Switch to Be Restarted?

Creating or deleting a VS does not require the switch to be restarted.

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WoodWood
Created Sep 30, 2017 11:19:37 Helpful(0) Helpful(0)

CloudEngine Series Switches FAQs-4.3 VS
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