Dear
the OLT uplink by default are optical eth port , uplink port can be the mainboard ports or port of the the uplink board cards .
if multiple uplink port requirement to expand the bandwidth , can configure link-aggregation for the ports :
reference command :
huawei(config)#link-aggregation 0/9 0-1 ingress workmode lacp-static
Command:
link-aggregation 0/9 0-1 ingress workmode lacp-static