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Troubleshooting Guide

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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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).
What Ports Can Be Used to Set Up a Stack Among CE Series Switches?

What Ports Can Be Used to Set Up a Stack Among CE Series Switches?

Stack Port Types of CE12800, CE12800E, CE16800 Series Switches

Table 22-39 Stack port requirements of CE12800, CE12800E, CE16800 series switches

Item

Requirement

Remarks

Type of ports used for stack connections

  • 10GE optical ports
  • 10GE electrical ports
  • 40GE optical ports
  • 100GE optical ports

All ports except GE ports can be used for stack connections.

Number of physical member ports in a stack port

1-32

It is recommended that you add at least two physical member ports to a stack port to improve stack link bandwidth and reliability.

NOTE:
  • Physical member ports in a stack port must be the same type. For example, 10GE and 40GE ports cannot be added to the same stack port.

  • 10GE optical ports and 10GE electrical ports can be added to the same stack port.

  • 10GE optical ports derived from 40GE optical ports can be used for stack connections. If 40GE optical ports have been configured as the stack physical member ports, they cannot be split.

  • In V100R003C00 and V100R003C10, 10GE or 40GE optical ports derived from 100GE optical ports cannot be used for stack connections. In V100R005C00 and later versions, 10GE, 25GE, or 40GE optical ports derived from 100GE optical ports can be used for stack connections.

  • After 100GE QSFP28 optical ports have 100GE high-speed cables installed and are configured to work at the rate of 40GE using the speed 40000 command, these ports cannot be used for stack connections. If these ports have 40GE optical modules or high-speed cables (40GE auto-sensing), they can be used for stack connections.

Stack Port Types of CE8800, CE7800, CE6800, and CE5800 Series Switches

Table 22-40 Stack port requirements of CE8800, CE7800, CE6800, and CE5800 series switches

Item

Requirement

Remarks

Type of ports used for stack connections

  • 10GE electrical ports
  • 10GE optical ports
  • 25GE optical ports
  • 40GE optical ports
  • 100GE optical ports

All ports except GE ports can be used for stack connections.

Number of physical member ports in a stack port

1-16

It is recommended that you add at least two physical member ports to a stack port to improve stack link bandwidth and reliability.

NOTE:
  • Physical member ports in a stack port must be the same type. For example, 10GE and 40GE ports cannot be added to the same stack port.

  • On the CE8860EI, CE8861EI, and CE8868EI, physical ports on different subcards can be added to the same stack port.

  • On the CE6857EI, CE6850EI, CE6810EI, CE6810LI, and CE5850EI, if a 10GE port with port number in the range 4N+1 to 4N+4 (N=0, 1, 2, 3...) is configured as a physical member port, all the ports with port numbers 4N+1 to 4N+4 are configured as physical member ports. For example, if you configure 10GE1/0/1 as a physical member port, all the interfaces from 10GE1/0/1 to 10GE1/0/4 are configured as physical member ports.

  • Among the four 10GE optical ports of a CE5810-48T4S-EI, 10GE1/0/1 and 10GE1/0/2 must be added to the same stack port, and 10GE1/0/3 and 10GE1/0/4 must be added to another stack port.

  • To use 10GE optical ports of a CE5855-48T4S2Q-EI switch for stack connection, you can only add 10GE1/0/1 to 10GE1/0/2 and 10GE ports split from 40GE1/0/2 (40GE1/0/2:1 to 40GE1/0/2:4) to the same logical stack port or add 10GE1/0/3 to 10GE1/0/4 and 10GE ports split from 40GE1/0/1 (40GE1/0/1:1 to 40GE1/0/1:4) to the same logical stack port. To use 40GE optical ports of a CE5855-48T4S2Q-EI switch for stack connection, do not add 40GE1/0/1 and 40GE1/0/2 to the same logical stack port.

  • On the CE6863, ports 25GE1/0/1 to 25GE1/0/24 and 100GE1/0/1 to 100GE1/0/3 belong to the same forwarding chip, and ports 25GE1/0/25 to 25GE1/0/48 and 100GE1/0/4 to 100GE1/0/6 belong to the other forwarding chip. During stack setup, ports on different forwarding chips cannot be added to the same stack port, and ports on the same forwarding chip cannot be added to different stack ports.
  • On the CE6881, ports 10GE1/0/1 to 10GE1/0/24 and 100GE1/0/1 to 100GE1/0/3 belong to the same forwarding chip, and ports 10GE1/0/25 to 10GE1/0/48 and 100GE1/0/4 to 100GE1/0/6 belong to the other forwarding chip. During stack setup, ports on different forwarding chips cannot be added to the same stack port, and ports on the same forwarding chip cannot be added to different stack ports.
  • 10GE optical ports derived from 40GE optical ports on devices except CE7850EI and CE7855EI can be used for stack connections. If 40GE optical ports have been configured as the physical member ports, they cannot be split.

  • Only 40GE ports aggregated from CE6810-48S-LI's 10GE ports can be used for stack connections.

  • After 100GE QSFP28 optical ports have 100GE high-speed cables installed and are configured to work at the rate of 40GE using the speed 40000 command, these ports cannot be used for stack connections. If these ports have 40GE optical modules or high-speed cables (40GE auto-sensing), they can be used for stack connections.

  • 25GE SFP28 ports cannot be used for stack connections after their rate is configured to 10 Gbit/s or 1 Gbit/s using the port mode { 10ge | ge } command.

  • On the CE6860EI and CE6865EI, a 25GE SFP28 optical port with port number in the range 4N+1 to 4N+4 (N=0, 1, 2, 3...) needs to be configured as a stack member port, and all the ports with port numbers 4N+1 to 4N+4 must be configured as stack member ports.
  • When configuring ports of the CE8860EI, CE8861EI, or CE8868EI as stack member ports, pay attention to the following points:
    • If a 25GE SFP28 optical port, 10GE RJ45 electrical port or 10GE optical port with port number in the range 4N+1 to 4N+4 (N=0, 1, 2, 3...) needs to be configured as a stack member port, all the ports with port numbers 4N+1 to 4N+4 must be configured as stack member ports.
    • If a 40GE QSFP+ optical port on the CE8861EI or CE8868EI needs to be configured as a stack member port, two contiguous ports must be configured as stack member ports; alternatively, four 10GE optical ports split from two contiguous 40GE optical ports can be configured as stack member ports. A 40GE QSFP+ optical port can be split into two 10GE optical ports.
  • If the license is not installed on a CE8868EI, 25GE SFP28 ports on a CE88-D24S2CQ card work at the rate of 10 Gbit/s (the port mode 10ge command will be configured on these ports) and cannot be used for stack connections. To use 25GE SFP28 ports for stack connections, you need to install the license and run the undo port mode 10g command to enable the ports to work at the rate of 25 Gbit/s.
  • On the CE8850EI, if a 10GE optical port needs to be configured as a stack member port, two contiguous ports must be configured as stack member ports. That is, both 10GE1/0/1 and 10GE1/0/2 must be configured as stack member ports.

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Updated: 2020-01-07

Document ID: EDOC1000060766

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