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CloudEngine 8800, 7800, 6800, and 5800 V200R002C50 Configuration Guide - Virtualization

This document describes the configurations of virtualization, including stack and SVF.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Licensing Requirements and Limitations for SVF

Licensing Requirements and Limitations for SVF

Licensing Requirements

SVF is a basic switch feature and is not under license control.

Device and Version Requirements

Table 2-1 lists the device models and versions used to set up SVF systems.

Table 2-1 Device models and versions used to set up SVF systems

Version

Parent Switch Model

Leaf Switch Model

Remarks

V100R003C00

V100R003C10

CE6850-48S4Q-EI

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE6810-48S4Q-EI
  • In V100R005C00 and earlier versions, leaf switches in an SVF system must be the same series. For example, CE5810-48T4S-EI and CE5810-24T4S-EI can belong to the same SVF system, but CE6810-48S4Q-EI and CE5810-48T4S-EI cannot.

  • Versions of leaf switches must be the initial version that supports this model of switches as leaf switches or higher versions.

  • In V100R005C00, when a CE6810-48S4Q-EI functions as a leaf switch, its last 40GE interface cannot be split.

V100R005C00

CE6850-48S4Q-EI

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE6810-48S4Q-EI

CE6810-48S4Q-EI

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI

CE7850-32Q-EI

  • CE6810-48S4Q-EI

V100R005C10

CE6850-48S4Q-EI

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE6810-48S4Q-EI
  • In V100R005C10 and later versions, leaf switches in an SVF system can be switches of different series and models. For example, CE6810-48S4Q-EI and CE5810-48T4S-EI can belong to the same SVF system.

  • Versions of leaf switches must be the initial version that supports this model of switches as leaf switches or higher versions.

  • In V100R005C10, when a CE6810-48S4Q-EI, CE6810-48S4Q-LI, or CE6810-32T16S4Q-LI functions as a leaf switch, its last 40GE interface cannot be split. This limitation does not apply to a CE7850-32Q-EI that functions as a parent switch.

    In V100R006C00 and later versions, by default, when a CE6810-48S4Q-EI, CE6810-48S4Q-LI, or CE6810-32T16S4Q-LI functions as a leaf switch, its last 40GE interface cannot be split. This limitation does not apply to a CE7850-32Q-EI/CE7855-32Q-EI that functions as a parent switch. If you need to split the last 40GE interface, run the device exclude leaf-type ce5810ei command to prevent a CE5810EI from joining an SVF system as a leaf switch.

  • When a CE6810LI functions as a leaf switch to establish an SVF system with a parent switch using 40GE high-speed cables, both leaf and parent switches need to be upgraded to V100R005C10SPC200 or a later version.

CE6810-48S4Q-EI

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE5850-48T4S2Q-EI

CE7850-32Q-EI

  • CE6810-48S4Q-EI
  • CE6810-48S-LI
  • CE6810-48S4Q-LI
  • CE6810-24S2Q-LI
  • CE6810-32T16S4Q-LI
  • CE6850-48S6Q-HI
  • CE6850U-48S6Q-HI
  • CE6850U-24S2Q-HI
  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE6810-48S4Q-EI
  • CE6810-48S-LI
  • CE6810-48S4Q-LI
  • CE6810-24S2Q-LI
  • CE6810-32T16S4Q-LI

V100R006C00

CE6850-48S4Q-EI

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE6810-48S4Q-EI

CE6810-48S4Q-EI

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE5850-48T4S2Q-EI

CE7850-32Q-EI

  • CE5850-48T4S2Q-EI
  • CE5855-48T4S2Q-EI
  • CE5855-24T4S2Q-EI
  • CE6810-48S4Q-EI
  • CE6810-48S-LI
  • CE6810-48S4Q-LI
  • CE6810-24S2Q-LI
  • CE6810-32T16S4Q-LI
  • CE6850-48S6Q-HI
  • CE6850-48T6Q-HI
  • CE6851-48S6Q-HI
  • CE6850-48S6Q-HI
  • CE6850U-48S6Q-HI
  • CE6850U-24S2Q-HI
  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE6810-48S4Q-EI
  • CE6810-48S-LI
  • CE6810-48S4Q-LI
  • CE6810-24S2Q-LI
  • CE6810-32T16S4Q-LI

CE6851-48S6Q-HI

  • CE5855-48T4S2Q-EI
  • CE5855-24T4S2Q-EI
  • CE6810-48S-LI
  • CE6810-48S4Q-LI
  • CE6810-24S2Q-LI
  • CE6810-32T16S4Q-LI

V200R001C00

V200R002C50

V200R003C00

V200R005C00

V200R005C10

CE6850-48S4Q-EI

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE6810-48S4Q-EI

CE6810-48S4Q-EI

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE5850-48T4S2Q-EI
  • CE7850-32Q-EI
  • CE7855-32Q-EI
  • CE5850-48T4S2Q-EI
  • CE5855-48T4S2Q-EI
  • CE5855-24T4S2Q-EI
  • CE6810-48S4Q-EI
  • CE6810-48S-LI
  • CE6810-48S4Q-LI
  • CE6810-24S2Q-LI
  • CE6810-32T16S4Q-LI
  • CE6850-48S6Q-HI
  • CE6850-48T6Q-HI
  • CE6851-48S6Q-HI
  • CE6850U-48S6Q-HI
  • CE6850U-24S2Q-HI
NOTE:

The CE6850U-48S6Q-HI/CE6850U-24S2Q-HI can function as a leaf switch from V200R002C50.

  • CE6850-48S6Q-HI
  • CE6850U-48S6Q-HI
  • CE6850U-24S2Q-HI
  • CE6850-48T6Q-HI
NOTE:

The CE6850-48T6Q-HI can function as a parent switch from V200R002C50.

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI
  • CE6810-48S4Q-EI
  • CE6810-48S-LI
  • CE6810-48S4Q-LI
  • CE6810-24S2Q-LI
  • CE6810-32T16S4Q-LI
  • CE6851-48S6Q-HI
  • CE6855-48S6Q-HI
  • CE6856-48S6Q-HI
NOTE:

The CE6856-48S6Q-HI can function as a parent switch from V200R002C50.

  • CE5855-48T4S2Q-EI
  • CE5855-24T4S2Q-EI
  • CE6810-48S-LI
  • CE6810-48S4Q-LI
  • CE6810-24S2Q-LI
  • CE6810-32T16S4Q-LI

Device Quantity and Port Requirements

Table 2-2 lists the requirements for member switch quantity and ports during SVF setup.

Table 2-2 SVF member switch quantity and port requirements

Item

Description

Remarks

Number of parent switches

1-2

The parent switch can be a standalone switch or a stack of two devices.

Number of leaf switches

1-24

The leaf switch must be a standalone switch and not a stack of multiple devices.

Type of ports for SVF connection

10GE and 40GE optical ports

  • 10GE ports split from 40GE ports of parent switches can be connected to leaf switches.

    When a CE6850-48S4Q-EI functions as a parent switch, 40GE1/0/4 cannot be split, but 40GE1/0/1 to 40GE1/0/3 can be split into 10GE ports, which then can be used to connect to leaf switches. If 40GE1/0/4 on a CE6850-48S4Q-EI has been split into 10GE ports, SVF cannot be configured on the CE6850-48S4Q-EI.

  • 40GE ports aggregated by 10GE ports cannot be used for SVF connection.

Number of physical member ports in a fabric port

1-8

It is recommended that you add at least two member ports in each fabric port to ensure high reliability.

To learn about the default and configured leaf switch ports to be connected to a parent switch, see Table 2-3.

Table 2-3 List of leaf switch ports to be connected to a parent switch

Version

Leaf Switch Model

Default Port

Configured Port

V100R003C00

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI

4*10GE

Configured ports are not supported.

CE6810-48S4Q-EI

8*10GE

  • 8*10GE
  • 4*40GE

V100R003C10

V100R005C00

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI

4*10GE

Configured ports are not supported.

CE6810-48S4Q-EI

8*10GE and 4*40GE ports perform auto-negotiation:

  • If only 10GE ports are connected to a parent switch, 10GE ports are preferred.
  • If only 40GE ports are connected to a parent switch, 40GE ports are preferred.
  • If both 10GE and 40GE ports are connected to a parent switch, 40GE ports are preferred.
  • auto-negotiation
  • 8*10GE
  • 4*40GE

V100R005C10 or later

  • CE5810-48T4S-EI
  • CE5810-24T4S-EI

4*10GE

Configured ports are not supported.

  • CE5850-48T4S2Q-EI
  • CE5855-48T4S2Q-EI
  • CE5855-24T4S2Q-EI

2*40GE

  • 4*10GE
  • 2*40GE

CE6810-48S4Q-EI

8*10GE and 4*40GE ports perform auto-negotiation:

  • If only 10GE ports are connected to a parent switch, 10GE ports are preferred.
  • If only 40GE ports are connected to a parent switch, 40GE ports are preferred.
  • If both 10GE and 40GE ports are connected to a parent switch, 40GE ports are preferred.
  • auto-negotiation
  • 4*10GE
  • 8*10GE
  • 4*40GE
  • CE6810-48S4Q-LI
  • CE6810-32T16S4Q-LI

4*40GE

  • 4*10GE
  • 8*10GE
  • 4*40GE
  • CE6810-24S2Q-LI
  • CE6850U-24S2Q-HI

2*40GE

  • 4*10GE
  • 8*10GE
  • 2*40GE

CE6810-48S-LI

8*10GE

  • 4*10GE
  • 8*10GE
  • CE6850-48S6Q-HI
  • CE6850-48T6Q-HI
  • CE6851-48S6Q-HI
  • CE6850U-48S6Q-HI

6*40GE

  • 4*10GE
  • 8*10GE
  • 4*40GE
  • 6*40GE

Notes

  • N*10GE/N*40GE refers to the last N 10GE/40GE interfaces on the device.
  • When auto-negotiated or configured N*10GE or N*40GE ports are connected to a parent switch, these ports cannot be used as common service ports. For example, when any one of ports from 40GE1/0/1 to 40GE1/0/4 on a CE6810-48S4Q-EI is connected to a parent switch, the remaining ports cannot be used as common service ports.

  • In V100R005C00 and later versions, the auto-negotiation function takes effect on a CE6810-48S4Q-EI switch only one time. Leaf switches can use only the ports negotiated for the first time to connect to a parent switch. To change the leaf switch ports, you must manually configure the type of leaf switch ports.

Cable Requirements

SVF setup requires only common network cables or fibers and does not require dedicated SVF cables. Optical ports are connected using high-speed cables, AOC cables or optical modules and optical fibers. For details about cables and optical modules, see "Cables" and "Optical Modules" in the CloudEngine 8800, 7800, 6800, and 5800 Series SwitchesGet to Know the Product - Hardware Description.

Note the following points:
  • 10GE optical ports can be used to set up an SVF system only when they have 10GE optical modules installed. If GE optical or copper modules are installed on 10GE optical ports, these ports cannot be used to set up an SVF system.

  • In V100R006C00, 40GE optical modules of the QSFP-40G-SR-BD model cannot be used to set up an SVF system.

Feature Limitations

Precautions

Note the following points when configuring SVF:
  • When using SVF in SDN networks, consider the following recommendations:

    • When SVF networking is used in GE access networks, use CE6800 series switches as the parent switch and CE5800 series switches as leaf switches.

      In scenarios with high reliability requirements and low requirements on cost, use the standard VXLAN network to replace SVF networking and use CE6800 series switches (change 10GE interfaces as GE interfaces) as leaf switches.

    • In 10GE access networks, it is recommended not to use CE6810LI switches as leaf switches. It is recommended that a standard VXLAN network be used to replace an SVF network.

    • Connect leaf switches only to servers but not to other network devices, such as switches, routers, and firewalls.

  • Optical or copper modules that are certified for Huawei Ethernet switches must be used. If high-speed cables or AOCs are used, you must purchase cables from Huawei.

    Optical or copper modules that are not certified for Huawei Ethernet switches or cables that are not purchased from Huawei cannot ensure transmission reliability and may affect service stability. Huawei is not liable for any problem caused by the use of optical or copper modules that are not certified for Huawei Ethernet switches, or cables not purchased from Huawei, and will not fix such problems.

  • One leaf switch can connect to only one SVF system.

  • When a single switch is used as the parent switch, you must configure a stack domain ID for the switch. Otherwise, an SVF system cannot be set up.

  • When a single switch or a stack of two switches is used as the parent switch, the stack member ID of the parent switch must be less than or equal to 4.

    When a parent switch with stack member ID larger than 4 joins an SVF that has only one parent switch, the existing parent switch assigns a stack member ID that is less than or equal to 4 to the new parent switch.

  • On a CE5810-48T4S-EI, the first 24 GE ports and first two 10GE ports belong to the same switching chip, and the last 24 GE ports and last two 10GE ports belong to the same switching chip. When a CE5810-48T4S-EI functions as a leaf switch, uplink traffic of its first 24 GE ports is balanced between the first two 10GE ports for transmission according to the hash algorithm, and uplink traffic of its last 24 GE ports is balanced between the last two 10GE ports for transmission according to the hash algorithm.

    If a CE5810-48T4S-EI uses four 10GE ports to connect to the parent switch, connection mode 1 shown in Figure 2-15 is recommended because it reduces the traffic load of the stack link between parent switches. If connection mode 2 is used, some upstream traffic is load balanced to the stack link, increasing the bandwidth pressure of the stack link.

    If a CE5810-48T4S-EI uses less than 24 GE ports to connect to servers and uses only two 10GE ports to connect to the parent switch, it is advised to use the first 24 GE ports and first two 10GE ports to connect to servers and the parent switch respectively or use the last 24 GE ports and last two 10GE ports to connect to servers and the parent switch respectively.

    Figure 2-15 Two leaf switches of CE5810-48T4S-EI model connecting to parent switches
  • When a CE5810EI functions as a leaf switch, and the traffic volume of high-priority (priority 7) user packets to be forwarded by a fabric port exceeds 90% of the fabric port bandwidth, these packets will preempt the bandwidth of management packets between the leaf switch and parent switch. This situation will result in the loss of management packets, or even worse, the restart of the leaf switch.

  • A device that functions as a parent switch can reserve two ACLs in V100R005C10 and later versions. If the device is upgraded to V100R005C10 or later versions, and its ACLs have been used up before the upgrade, the two reserved ACLs cannot take effect after the upgrade.
  • If an existing leaf switch is replaced by a new switch of a different model, the new switch's ports with the same port types and port numbers as the existing switch's ports will inherit the configurations of the existing switch's ports. If the inherited configurations contain the services that are not supported by the new switch, the configurations of these services cannot be deleted from the new switch. To delete these unsupported configurations, enable the new switch to go offline and then delete these configurations in offline mode.

  • In V100R006C00 or later versions, after ports are added to a fabric port as member ports, the port crc-statistics trigger error-down command is automatically configured on these member ports. After a version upgrade to V100R006C00 or later, the port crc-statistics trigger error-down command configuration is automatically added to these member ports.

    In versions earlier than V200R002C50, after member ports are removed from a fabric port, the port crc-statistics trigger error-down command configuration is not automatically cleared.

    In V200R002C50 and later versions, if the port crc-statistics trigger error-down command is not configured before member ports are added to a fabric port, this command configuration is automatically cleared after member ports are removed from this fabric port. If this command has been configured before member ports are added to a fabric port, this command configuration is not automatically cleared after member ports are removed from this fabric port.

  • When VBDIF interfaces are configured in an SVF system and ARP broadcast suppression is enabled in a BD, a leaf node forwards two copies of ARP packets after receiving an ARP request packet.

Feature Support in SVF

Leaf switches in an SVF system support different features in different forwarding modes. The following table shows feature support in an SVF system. The configuration of features that are not listed in the table is the same as that on a standalone switch.
Table 2-4 Feature support in SVF

Feature

Distributed Forwarding

Centralized Forwarding

Hybrid Forwarding

Eth-Trunk

  • In an SVF system, an Eth-Trunk cannot be set up between leaf switches of different series or between a parent switch and a leaf switch.
  • In distributed forwarding mode, switches can be configured with less than 256 link aggregation groups.
  • In V100R005C00 and earlier versions, the assign forward eth-trunk mode command cannot be configured in an SVF system.
  • In V100R005C10 and later versions, the assign forward eth-trunk mode command can be configured in an SVF system. Each Eth-Trunk supports a maximum of eight member interfaces on the CE5810EI. When the CE5810EI functions as the leaf switch, the following situations occur:
    • When the maximum number of member interfaces in each LAG configured by the assign forward eth-trunk mode command is greater than or equal to 8, each LAG allows a maximum of eight member interfaces on the CE5810EI.
    • assign forward eth-trunk mode command is less than 8, the command is also valid for the CE5810EI.

Layer 2 port isolation

In V100R005C10 and later versions, if 256, 512, or 1024 link aggregation groups are configured in an SVF system consisting of fixed switches, Layer 2 port isolation cannot be configured on Eth-Trunks.

MAC address learning priority

Supported

In SVF centralized or hybrid forwarding mode, the MAC address learning priority does not take effect in the following scenarios:
  • Among the two ports learning the same MAC address, one is on a parent switch, and the other is on a leaf switch. The MAC address learning priority of the port on a parent switch is higher than that of the port on a leaf switch.
  • The two ports that learn the same MAC address are on different leaf switches, and the two ports are not inter-device Eth-Trunk interfaces or inter-device Eth-Trunk member interfaces. The MAC address learning priorities configured for the two ports are different.
  • The two ports that learn the same MAC address are on different leaf switches. One port is an inter-device Eth-Trunk member interface, and the other is a physical interface or a non-inter-device Eth-Trunk interface. The MAC address learning priority of the latter port is higher than that of the former port.

Layer 3 sub-interface

If a CE6810LI functions as a standalone switch, the CE6810LI does not support Layer 3 sub-interfaces. If a CE6810LI functions as a leaf switch in an SVF system consisting of fixed switches, the CE6810LI supports Layer 3 sub-interfaces.

IPv6

In versions earlier than V200R002C50, the CE5855EI does not support IPv6. However, interfaces on a CE5855EI provide the IPv6 capability when the switch functions as a leaf switch in a super virtual fabric (SVF) system and the SVF forwarding mode is set to centralized or hybrid. In V200R002C50 and later versions, the CE5855EI supports IPv6.

VXLAN

SVF and VXLAN conflict and cannot be configured together.

In V100R005C10 and earlier versions, SVF and VXLAN conflict and cannot be configured together. Starting from V100R006C00, in centralized forwarding mode, the SVF system supports the VXLAN feature. A leaf device can only serve as the access-side device of the VXLAN tunnel.

SVF and VXLAN conflict and cannot be configured together.

NetStream

  • A CE6810LI functioning as a leaf switch does not support NetStream function.
  • A CE5855EI functioning as a leaf switch supports NetStream IPv6 function.
  • A leaf switch does not support NetStream.
  • If NetStream has been configured on the leaf switch, the leaf switch cannot change from distributed forwarding mode to hybrid or centralized forwarding mode. If you want to change the forwarding mode, delete the NetStream configuration on the leaf switch first.

sFlow

  • A CE5855EI functioning as a leaf switch supports sFlow IPv6 function.

  • Do not configure sFlow on an inter-leaf Eth-Trunk. If you configure sFlow on an inter-leaf Eth-Trunk, the statistics collection result of the sFlow Collector will be inaccurate.

  • Do not configure sFlow on an inter-leaf Eth-Trunk. If you configure sFlow on an inter-leaf Eth-Trunk, the statistics collection result of the sFlow Collector will be inaccurate.
  • In V100R006C00 and earlier versions, when working in hybrid or centralized forwarding mode, a leaf switch does not support sFlow. If sFlow has been configured on a leaf switch, the leaf switch cannot switch from distributed forwarding mode to hybrid or centralized forwarding mode. If you want to change the forwarding mode on a leaf switch, delete the sFlow configuration on the leaf switch first.
  • In V200R001C00 and later versions, when working in hybrid or centralized forwarding mode, a leaf switch supports sFlow only in the inbound direction of a physical interface, Eth-Trunk, or Eth-Trunk member interface, and does not support sFlow in the inbound direction of Layer 2 or Layer 3 sub-interfaces. sFlow configured in the inbound direction of a physical interface, Eth-Trunk, or Eth-Trunk member interface can sample traffic on Layer 3 or Layer 2 sub-interfaces. If sFlow has been configured in the outbound direction of a leaf switch, the leaf switch cannot change from distributed forwarding mode to hybrid or centralized forwarding mode. If you want to change the forwarding mode on a leaf switch, delete the sFlow configuration on the leaf switch first.

  • In hybrid forwarding mode, leaf switches perform sFlow sampling on the traffic forwarded between them, but cannot collect routing information. In centralized forwarding mode, a leaf switch performs sFlow sampling, but cannot collect routing information of packets.

  • A CE5855EI supports sFlow IPv6 when functioning as a leaf switch.

TRILL

The parent switch supports the TRILL function. Leaf switches do not support the TRILL function if their switch models (for example, CE5810EI) do not support the TRILL function before they join an SVF system. If switch models (CE6850EIs, for example) of leaf switches support the TRILL function before they join an SVF system, these leaf switches can function as TRILL network-side and user-side devices.

If the parent switch supports the TRILL function, leaf switches can only function as TRILL user-side devices.

Traffic Suppression

In an SVF system using distributed forwarding mode, traffic suppression cannot be configured for unknown unicast traffic on the Fabric interfaces.

In an SVF system using centralized or hybrid forwarding mode, traffic suppression cannot be configured for unknown unicast traffic on the interfaces of leaf switches.

BFD

A CE6810LI that is used as the leaf node does not support the BFD session.

Storm Control

Supported

In an SVF system using centralized or hybrid forwarding mode, storm control cannot be configured for unknown unicast traffic on the interfaces of leaf switches.

URPF

Supported

When an SVF system consisting of only fixed switches works in centralized or hybrid forwarding mode, URPF check is not performed for the Layer 3 traffic forwarded on the leaf switch.

Mirroring

Parent switches and leaf switches support Layer 3 remote mirroring ERSPAN.

Parent switches support Layer 3 remote mirroring ERSPAN, but leaf switches do not support.

MPLS LDP

If any switch in the SVF set up by fixed switches does not support MPLS LDP, the SVF in distributed mode does not support MPLS LDP.

If the parent switch in the SVF set up by fixed switches supports MPLS LDP, the SVF in centralized or hybrid supports MPLS LDP.

MPLS QoS

If any switch in the SVF set up by fixed switches does not support MPLS QoS, the SVF in distributed mode does not support MPLS QoS.

If the parent switch in the SVF set up by fixed switches supports MPLS QoS, the SVF in centralized or hybrid supports MPLS QoS.

FCoE&DCB

In V100R005C00, parent switches support FCoE and DCB, but leaf switches do not.

In V100R006C00 and later versions, an SVF system supports FCoE and DCB. When a CE6810LI or a CE5800 functions as a leaf switch, an SVF system does not support FCoE and DCB.

ARP

In the SVF scenario, if the NLB outbound interface is on the leaf, more packets will be forwarded.

VPLS

Not supported

Note:

  • V100R005C00 and earlier versions support only the distributed forwarding mode.
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Updated: 2019-04-20

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