Layer 3 Forwarding Failure; Symptom - HP 5920 series Troubleshooting Manual

Command
display interface
display packet-filter
display qos policy
display qos policy interface
display qos vlan-policy
display qos policy global
display this
display ip source binding/display ipv6 source binding
display portal interface
display dot1x
display mac-forced-forwarding vlan
display link-aggregation verbose
display smart-link group
display mac-address blackhole
display qos lr interface
display qos queue-statistics interface

Layer 3 forwarding failure

Symptom

Packet loss occurs when the switch forwards packets to a different network.
Description
Displays Ethernet interface information.
Displays whether an ACL has been successfully
applied to an interface for packet filtering.
Displays user-defined QoS policy configuration
information.
Displays information about the QoS policies applied
to an interface or all interfaces.
Displays information about QoS policies applied to
VLANs.
Displays information about global QoS policies.
Displays the running configuration in the current
view.
Displays source guard binding entries.
Displays portal configuration and portal running
state on an interface.
Displays information about 802.1X.
Displays the MFF configuration information for a
VLAN.
Displays detailed information about the aggregation
groups that correspond to the aggregate interfaces.
Displays information about the specified or all smart
link groups.
Displays blackhole MAC address entries.
Displays the rate limit configuration and statistics on
a specified interface or all the interfaces.
Displays traffic statistics collected for an interface on
a per-queue basis.
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