Rtd Messages - Cisco WS-C2950-24 Configuration Manual

Error Message and Recovery Procedures

RTD Messages

Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
A-10
This section contains the Runtime Diagnostic (RTD) error messages.
RTD-1-ADDR_FLAP [chars] relearning [dec] addrs per min
Normally, MAC addresses are learned once on a port.
Explanation
Occasionally, when a switched network reconfigures, due to either manual or
STP reconfiguration, addresses learned on one port are relearned on a different
port. However, if there is a port anywhere in the switched domain that is
looped back to itself, addresses will jump back and forth between the real port
and the port that is in the path to the looped back port. In this message, [chars]
is the interface, and [dec] is the number of addresses being learnt.
Action Determine the real path (port) to the MAC address. Use debug
ethernet-controller addr to see the alternate path-port on which the address
is being learned. Go to the switch attached to that port. Note that the show cdp
neighbors command is useful in determining the next switch. Repeat this
procedure until the port is found that is receiving what it is transmitting, and
remove that port from the network.
RTD-1-LINK_FLAP [chars] link down/up [dec] times per min
Explanation This message means that an excessive number of link down-up
events has been noticed on this interface: [chars] is the interface, and [dec] is
the number of times the link goes up and down. This might be the result of
reconfiguring the port, or it might indicate a faulty device at the other end of
the connection.
If someone is reconfiguring the interface or device at the other side of
Action
the interface, ignore this message. However, if no one is manipulating the
interface or device at the other end of the interface, it is likely that the Ethernet
transceiver at one end of the link is faulty and should be replaced.
Appendix A System Error Messages
78-6511-05