Aruba 2530 - Page 12

Displaying the monitoring configuration........................................................................... 304
Configuring the monitor port.............................................................................................304
Selecting or removing monitoring source interfaces........................................................ 305
Chapter 16 Troubleshooting........................................................................306
Overview................................................................................................................................................ 306
Troubleshooting approaches..................................................................................................................306
Browser or Telnet access problems....................................................................................................... 307
Cannot access the WebAgent.....................................................................................................307
Cannot Telnet into the switch console from a station on the network......................................... 307
Unusual network activity........................................................................................................................ 308
General problems........................................................................................................................308
The network runs slow; processes fail; users cannot access servers or other devices... 308
Duplicate IP addresses.................................................................................................... 308
Duplicate IP addresses in a DHCP network.....................................................................309
The switch has been configured for DHCP/Bootp operation, but has not received a
DHCP or Bootp reply........................................................................................................309
802.1Q Prioritization problems....................................................................................................309
Ports configured for non-default prioritization (level 1 to 7) are not performing the
specified action.................................................................................................................309
Addressing ACL problems.......................................................................................................... 309
ACLs are properly configured and assigned to VLANs, but the switch is not using the
ACLs to filter IP layer 3 packets....................................................................................... 309
The switch does not allow management access from a device on the same VLAN........ 310
Error (Invalid input) when entering an IP address............................................................ 310
Apparent failure to log all "deny" matches........................................................................311
The switch does not allow any routed access from a specific host, group of hosts, or
subnet...............................................................................................................................311
The switch is not performing routing functions on a VLAN...............................................311
Routing through a gateway on the switch fails................................................................. 311
IGMP-related problems............................................................................................................... 312
IP multicast (IGMP) traffic that is directed by IGMP does not reach IGMP hosts or a
multicast router connected to a port................................................................................. 313
IP multicast traffic floods out all ports; IGMP does not appear to filter traffic................... 313
LACP-related problems...............................................................................................................313
Unable to enable LACP on a port with the interface <port-number> lacp
command .........................................................................................................................313
Port-based access control (802.1X)-related problems................................................................313
The switch does not receive a response to RADIUS authentication requests................. 313
The switch does not authenticate a client even though the RADIUS server is properly
configured and providing a response to the authentication request.................................314
During RADIUS-authenticated client sessions, access to a VLAN on the port used for
the client sessions is lost..................................................................................................314
The switch appears to be properly configured as a supplicant, but cannot gain access
to the intended authenticator port on the switch to which it is connected........................ 314
The supplicant statistics listing shows multiple ports with the same authenticator MAC
address.............................................................................................................................314
The show port-access authenticator <port-list> command shows one
or more ports remain open after they have been configured with control
unauthorized ...............................................................................................................314
RADIUS server fails to respond to a request for service, even though the server's IP
address is correctly configured in the switch....................................................................315
The authorized MAC address on a port that is configured for both 802.1X and port
security either changes or is re-acquired after execution of aaa port-access
authenticator <port-list> initialize ..........................................................315
12 Aruba 2530 Management and Configuration Guide for
ArubaOS-Switch 16.05