Vnic Bandwidth Metering - Lenovo RackSwitch G8264 Application Manual

vNIC Bandwidth Metering

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G8264 Application Guide for ENOS 8.4
ENOS 8.4 supports bandwidth metering for vNIC traffic. By default, each of the
four vNICs on any given port is allowed an equal share (25%) of NIC capacity
when enabled. However, you may configure the percentage of available switch
port bandwidth permitted to each vNIC.
vNIC bandwidth can be configured as a value from 1 to 100, with each unit
representing 1% (or 100Mbps) of the 10Gbps link. By default, each vNICs enabled
on a port is assigned 25 units (equal to 25% of the link, or 2.5Gbps). When traffic
from the switch to the vNIC reaches its assigned bandwidth limit, the switch will
drop packets egressing to the affected vNIC. Likewise, if traffic from the vNIC to
the switch reaches its limit, the NIC will drop egress of any further packets. When
traffic falls to less than the configured thresholds, traffic resumes at its allowed
rate.
To change the bandwidth allocation, use the following commands:
RS G8264(config)# vnic port <port alias or number> index <vNIC number (1‐4)>
RS G8264(vnic­config)# bandwidth <allocated percentage>
Note: vNICs that are disabled are automatically allocated a bandwidth value of 0.
A combined maximum of 100 units can be allocated among vNIC pipes enabled for
any specific port (bandwidth values for disabled pipes are not counted). If more
than 100 units are assigned to enabled pipes, an error will be reported when
attempting to apply the configuration.
The bandwidth metering configuration is synchronized between the switch and
vNICs. Once configured on the switch, there is no need to manually configure
vNIC bandwidth metering limits on the NIC as long as it is in Lenovo Virtual
Fabric mode.