The 25GE Switch with auto-sense support for 1GE

daniellima · Created Oct 30, 2020 20:01:25

Hi Renan!!!

The CE6865 support 1GB transceivers, but there are some note and necessary configuration for the interface recognize the speed and the transceivers:

NOTE:
A 25GE optical interface does not support auto-negotiation when it has a GE optical module installed. To connect the two interfaces at both ends of a link, disable auto-negotiation on the peer interface. Otherwise, one interface may go Up and the other may go Down.

Reference:

https://support.huawei.com/hedex/hdx.do?lib=EDOC110013652531180BSD&docid=EDOC1100136525&lang=en&v=04&tocLib=EDOC110013652531180BSD&tocV=04&id=EN-US_TASK_0141109363&tocURL=resources%25252Fdc%25252Fdc_cfg_int_1019.html&p=t&fe=1&ui=3&keyword=jumbo%252Bframe

daniellima · Created Oct 30, 2020 20:01:25

Hi Renan!!!

The CE6865 support 1GB transceivers, but there are some note and necessary configuration for the interface recognize the speed and the transceivers:

NOTE:
A 25GE optical interface does not support auto-negotiation when it has a GE optical module installed. To connect the two interfaces at both ends of a link, disable auto-negotiation on the peer interface. Otherwise, one interface may go Up and the other may go Down.

Reference:

https://support.huawei.com/hedex/hdx.do?lib=EDOC110013652531180BSD&docid=EDOC1100136525&lang=en&v=04&tocLib=EDOC110013652531180BSD&tocV=04&id=EN-US_TASK_0141109363&tocURL=resources%25252Fdc%25252Fdc_cfg_int_1019.html&p=t&fe=1&ui=3&keyword=jumbo%252Bframe

sohaib.ansar · Created Oct 30, 2020 20:02:15

Ports

10GE/25GE SFP28 Optical Port

10GE/25GE SFP28 optical ports cannot work at the rate of 100 Mbit/s. Table 2-232 shows the attributes of a 10GE/25GE SFP28 optical port.

Table 2-232 Attributes of a 10GE/25GE SFP28 optical port

Attribute	Description
Connector type	Depending on the optical module
Optical attributes	Depending on the module or cable in use
Port use constraints	The 48 10GE/25GE SFP28 optical ports of a CE6865EI switch work at the rate of 25 Gbit/s by default and do not support GE/10GE auto-sensing. You can set the port rate to 10 Gbit/s or 1 Gbit/s using the port mode 10g or port mode ge command, respectively. The 48 10GE/25GE SFP28 optical ports are divided into 12 port groups, with four ports in each group (1-4, 5-8, 9-12...45-48). If the rate of any port in a port group is set to 1 Gbit/s, 10 Gbit/s, or 25 Gbit/s, all the other ports in this group also work at the rate of 1 Gbit/s, 10 Gbit/s, or 25 Gbit/s. When the ports in a port group work at the rate of 25 Gbit/s, they support only 25GE modules or cables and will go Down if other types of modules or cables are used. When the ports in a port group work at the rate of 10 Gbit/s, they support only 10GE modules or cables and will go Down if other types of modules or cables are used. When the ports in a port group work at the rate of 1 Gbit/s, they support only GE modules or cables and will go Down if other types of modules or cables are used.