Management and Configuration Guide K/KA/KB.15.15

is not learned or reported by the software address management components. This enhancement
also filters out the MAC address learns from LLDP and 802.1x EAPOL packets on untagged VLANs.
The feature is configured per-port.
Filtering PVID Mismatch Log Messages
This enhancement filters out PVID mismatch log messages on a per-port basis. PVID mismatches
are logged when there is a difference in the PVID advertised by a neighboring switch and the PVID
of the switch port which receives the LLDP advertisement. Logging is an LLDP feature that allows
detection of possible vlan leakage between adjacent switches. However, if these events are logged
too frequently, they can overwhelm the log buffer and push relevant logging data out of log memory,
making it difficult to troubleshoot another issue.
Logging is disabled and enabled with the support of CLI commands.
This enhancement also includes displaying the Mac-Address in the PVID mismatch log message
when the port ID is Mac-Address instead of displaying garbage characters in the peer device port
ID field.
Use the following command to disable the logging of the PVID mismatch log messages:
Syntax
logging filter [<filter-name><sub filter id>] <regularexpression> deny
Regular-expression The regular expression should match the message which is to be
filtered.
Syntax
logging filter <filter-name> enable
Configuring the switch to filter untagged traffic
Enter this command to configure the switch not to learn CDP, LLDP, or EAPOL traffic for a set of
interfaces.
Syntax
[no]ignore-untagged-mac <port-list>
Prevents MAC addresses from being learned on the specified ports when the VLAN
is untagged and the destination MAC address is one of the following:
• 01000C-CCCCCC (CDP)
• 0180c2- 00000e (LLDP)
• 0180c2-000003 (EAPOL)
Example
Configuring the switch to ignore packet MAC address learns for an untagged VLAN.
HP Switch(config) ignore-untagged-mac 1-2
Viewing the configuration
Enter the show running-config command to display information about the configuration.
Example
Configuration showing interfaces to ignore packet MAC address learns.
HP Switch(config) show running-config
Running configuration:
240 Configuring for Network Management Applications