Lenovo RackSwitch G8264CS Cli Command Reference page 207

Statistics
VLAN Discards
Filter Discards
Policy Discards
Non‐Forwarding State
IBP/CBP Discards
HOL‐blocking Dis‐
cards
MMU Discards
Cell Error Discards
MMU Aging Discards
Other Discards
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Table 91.
Interface Statistics of a Port (continued)
Description
Discarded because the packet was tagged with a VLAN
to which this port is not a member.
Dropped by the Content Aware Engine (user‐configured
filter).
Dropped due to policy setting. For example, due to a
user‐configured static entry.
Discarded because the ingress port is not in the
forwarding state.
Discarded because of Ingress Back Pressure (flow
control), or because the Common Buffer Pool is full (for
example, insufficient packet buffering).
Discarded because of the Head Of Line (HOL) blocking
mechanism. Low‐priority packets are placed in a sepa‐
rate queue and can be discarded while applications or
the TCP protocol determine whether a retransmission is
necessary. HOL blocking forces transmission to stop
until the overloaded egress port buffer can receive data
again.
Discarded because of the Memory Management Unit.
Discarded packets not included in any category.
Chapter 3: Statistics Commands
207