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Related commands
This section lists the commands that you might use for troubleshooting Layer 2 forwarding failure.
Command
Description
display dot1x
Displays session information, statistics, and configurations about
802.1X.
display interface
Displays Ethernet interface information.
display ip source binding
Displays IPv4 source guard binding entries.
display ipv6 source binding
Displays IPv6 source guard binding entries.
display link-aggregation verbose
Displays detailed information about the aggregation groups that
correspond to the aggregate interfaces.
display mac-address blackhole
Displays blackhole MAC address entries.
display packet-filter
Displays whether an ACL has been successfully applied to an
interface for packet filtering.
display qos lr interface
Displays the rate limit configuration and statistics on a specified
interface or all the interfaces.
display qos policy
Displays user-defined QoS policy configuration information.
display qos policy global
Displays information about global QoS policies.
display qos policy interface
Displays information about the QoS policies applied to an
interface or all interfaces.
display qos queue interface
Displays traffic statistics collected for an interface on a per-queue
basis.
display qos vlan-policy
Displays information about QoS policies applied to VLANs.
display smart-link group
Displays smart link group information.
display this
Displays the running configuration in the current view.
Layer 3 forwarding failure
Symptom
Packet loss occurs when the switch forwards packets to a different network.
