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Configuration Guide - Ethernet Switching

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, MUX VLAN, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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Licensing Requirements and Limitations for Ethernet Link Aggregation

Licensing Requirements and Limitations for Ethernet Link Aggregation

Involved Network Element

Other network elements are not required.

Licensing Requirements

Ethernet link aggregation is a basic feature of a switch and is not under license control.

Version Requirements

Table 3-2 Products and minimum version supporting Ethernet link aggregation

Product

Minimum Version Required

CE8860EI

V100R006C00

CE8861EI/CE8868EI

V200R005C10

CE8850-32CQ-EI

V200R002C50

CE8850-64CQ-EI

V200R005C00

CE7850EI

V100R003C00

CE7855EI

V200R001C00

CE6810EI

V100R003C00

CE6810-48S4Q-LI/CE6810-48S-LI

V100R003C10

CE6810-32T16S4Q-LI/CE6810-24S2Q-LI

V100R005C10

CE6850EI

V100R001C00

CE6850-48S6Q-HI

V100R005C00

CE6850-48T6Q-HI/CE6850U-HI/CE6851HI

V100R005C10

CE6855HI

V200R001C00

CE6856HI

V200R002C50

CE6857EI

V200R005C10

CE6860EI

V200R002C50

CE6865EI

V200R005C00

CE6870-24S6CQ-EI/CE6870-48S6CQ-EI

V200R001C00

CE6870-48T6CQ-EI

V200R002C50

CE6875-48S4CQ-EI

V200R003C00

CE6880EI

V200R002C50

CE5810EI

V100R002C00

CE5850EI

V100R001C00

CE5850HI

V100R003C00

CE5855EI

V100R005C10

CE5880EI

V200R005C10

Feature Limitations

Licensing Requirements and Limitations Before an Eth-Trunk Is Configured
  • Table 3-3 describes the specifications of Ethernet link aggregation.

    Table 3-3 Specifications of Ethernet link aggregation

    Version

    Specification

    Versions earlier than V100R005C00

    Each Eth-Trunk supports a maximum of 8 member interfaces on the CE5810EI and 16 member interfaces on other models.

    Each Eth-Trunk contains a maximum of 8 member interfaces in an SVF system.

    V100R005C00 and later versions

    Each Eth-Trunk supports a maximum of 8 member interfaces on the CE5810EI. Each Eth-Trunk supports a maximum of 64 member interfaces on the CE5880EI and CE6880EI. The maximum number of member interfaces in each Eth-Trunk on other models is determined by the assign forward eth-trunk mode command. After the maximum number of LAGs supported by the device is set, restart the device to make the configuration take effect.

  • 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.
  • In versions earlier than V200R002C50, member interfaces of an Eth-Trunk must use the same rate.

    For example, GE and 10GE interfaces cannot join the same Eth-Trunk, whereas GE electrical and optical interfaces can join the same Eth-Trunk.

    In V200R002C50 and later versions, Ethernet interfaces working with different rates can join the same Eth-Trunk.

  • The number of member interfaces of an Eth-Trunk cannot exceed the maximum number of member interfaces allowed.
  • Member interfaces cannot be configured with some services or static MAC address entries. For example, when an interface is added to an Eth-Trunk, the interface must use the default link type.
  • Member interfaces of an Eth-Trunk cannot be an Eth-Trunk.
  • Device connection
    • If an interface of the local device is added to an Eth-Trunk, an interface of the remote device directly connected to the interface of the local device must also be added to an Eth-Trunk. Otherwise, communication between the two devices will fail.
    • Both devices of the Eth-Trunk must use the same number of physical interfaces, interface rate, duplex mode, jumbo, and flow control mode.
    • Both devices of an Eth-Trunk must use the same link aggregation mode.
  • Preferential forwarding of local traffic is only valid for known unicast packets. It is invalid for broadcast packets, multicast packets, and unknown unicast packets.
  • If the system resource mode of the CE8860EI is large-arp, and the IfType field displays 8 and the TargetBlade and TargetPort fields display non-zero values in the output of the display fei ipv4 arp command run in the diagnostic view, the outbound interface of the ARP entry is a physical member interface of an Eth-Trunk. The switch cannot perform Eth-Trunk load balancing and preferential forwarding of local traffic for Layer 3 unicast traffic corresponding to the ARP entry.

  • The VLAN, VXLAN, carrier VLAN, main interface, and Eth-Trunk where card interoperability mode is set to enhanced share system resources. If system resources are insufficient, the configuration may fail.

Licensing Requirements and Limitations After an Eth-Trunk Is Configured
  • An Ethernet interface can be added to only one Eth-Trunk. To add an Ethernet interface to another Eth-Trunk, delete it from the original one first.
  • When an Eth-Trunk member interface is removed from an Eth-Trunk or a physical interface is added to an Eth-Trunk, run the shutdown command for the Eth-Trunk member interface or physical interface, and then run the undo shutdown command after the Eth-Trunk member interface is removed from or the physical interface is added to the Eth-Trunk.
  • After an interface is added to an Eth-Trunk, the Eth-Trunk learns MAC address entries or ARP entries, but the member interface does not.
  • Before deleting an Eth-Trunk, delete member interfaces from the Eth-Trunk.
  • In V100R005C10, 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. In V100R006C00 and later versions, if a leaf switch is a CE5810EI switch and 256, 512, or 1024 link aggregation groups are configured in an SVF system consisting of fixed switches, the CE5810EI leaf switch does not support the Layer 2 port isolation configuration on Eth-Trunks. This limitation does not apply to other leaf switches.
  • After running the service type tunnel command to enable service loopback, an Eth-Trunk interface can only be used to loop service packets back to tunnel interfaces.
    • When member interfaces of an Eth-Trunk are on leaf switches in a super virtual fabric (SVF) system, service loopback cannot be enabled on the Eth-Trunk.
    • When service loopback is enabled on an Eth-Trunk, interfaces on leaf switches in an SVF system cannot be added to the Eth-Trunk.
  • For CE6870EI and CE6875EI, The following services are in descending order of priority: M-LAG unidirectional isolation, MQC (traffic policing, traffic statistics collection, and packet filtering), querying the outbound interface of packets with specified 5-tuple information, source MAC address, and destination MAC address, local VLAN mirroring, sFlow, NetStream, and VLANIF interface statistics collection. When the services are configured on an interface in the outbound direction, only the service with the highest priority takes effect. For example, when both packet filtering and VLANIF interface statistics collection are configured on a VLANIF interface, packet filtering takes effect.

    For sFlow and NetStream, the preceding limitations apply only to Layer 2 sub-interfaces and Layer 3 sub-interfaces.

  • The CE5880EI, CE6880EI, CE6875EI and CE6870EI do not support forwarding packet capture from member interfaces in a specified Eth-Trunk. The switches can capture the packets to be sent to the CPU only on Eth-Trunks, but not on member interfaces of the Eth-Trunks.

  • The dynamic load balancing for an LAG and elastic load balancing functions cannot be applied together.
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Updated: 2019-05-08

Document ID: EDOC1100004351

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