IP multicast (IGMP) traffic that is directed by IGMP does not reach IGMP hosts or a
multicast router connected to a port
IGMP must be enabled on the switch and the affected port must be configured for "Auto" or "Forward" operation.
IP multicast traffic floods out all ports; IGMP does not appear to filter traffic
The IGMP feature does not operate if the switch or VLAN does not have an IP address configured manually or
obtained through DHCP/Bootp. To verify whether an IP address is configured for the switch or VLAN, do one of
the following:
• Try using the WebAgent: If you can access the WebAgent, then an IP address is configured.
• Try to telnet to the switch console: If you can Telnet to the switch, an IP address is configured.
• Use the switch console interface: From the Main Menu, check the Management Address Information screen
by clicking on:
1. Status and Counters
2. Switch Management Address Information
LACP-related problems
Unable to enable LACP on a port with the interface <port-number> lacp
command
In this case, the switch displays the following message:
Operation is not allowed for a trunked port.
You cannot enable LACP on a port while it is configured as a static Trunk port. To enable LACP on a static-
trunked port:
Procedure
1. Use the no trunk <port-number> command to disable the static trunk assignment.
2. Execute interface <port-number> lacp .
CAUTION:
Removing a port from a trunk without first disabling the port can create a traffic loop that can slow
down or halt your network. Before removing a port from a trunk, Hewlett Packard Enterprise
recommends that you either disable the port or disconnect it from the LAN.
Port-based access control (802.1X)-related problems
NOTE:
To list the 802.1X port-access Event Log messages stored on the switch, use show log 802.
See also Radius-related problems on page 316.
The switch does not receive a response to RADIUS authentication requests
In this case, the switch attempts authentication using the secondary method configured for the type of access you
are using (console, Telnet, or SSH).
Chapter 16 Troubleshooting 313
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