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Catalyst 3750, 3560, 3550, 2975, 2970, and 2960 Switch System Message Guide
OL-8551-04
Chapter 3 Message and Recovery Proced ures
PAGP_DUAL_ACTIVE Messages
Error Message NETWORK_PORT_SATELLITE-3-PHY_LOCKUP: Repeated phy lockup seen on
[chars]. Interface will be shut down.
Note This message applies only to Catalyst 3550 switches.
Explanation PHY lockup was detected too many times in a row. The interface is shut down to avoid
continuous link flapping.
Recommended Action To re-enable the interface, use the shutdown interface configuration command,
followed by the no shutdown interface configuration command.
Note NETWORK_PORT_SATELLITE-6-MAC_LOCKUP: Transmit lock up is detected in
[chars]. This message applies only to Catalyst 3550 switches.
Error Message NETWORK_PORT_SATELLITE-6-MAC_LOCKUP: Transmit lock up is detected in
[chars]. This port is administratively down.
Note This message applies only to Catalyst 3550 switches.
Explanation When the PHY is powered on and off, the MAC cycles from 1000 to 100 Mb/s, a nd the
port might lock up and stop sending packets. The PHY refers to the physical layer device on the
switch, which sends and receives optical signals and provides framing and line integrity. [chars] is
the interface name.
Recommended Action Shut down the port by using the shutdown interface configuration command,
and bring it back up by using the no shutdown interface configuration command.
PAGP_DUAL_ACTIVE Messages
This section contains Port Aggregation Protocol (PAgP) dual-active detection messages.
Error Message %PAGP_DUAL_ACTIVE-3-RECOVERY_TRIGGER: PAgP running on [chars]
informing virtual switches of dual-active: new active id [enet], old id [enet]
Explanation PAgP received a new active ID on the specified interface, which means that all virtual
switches are in a dual-active scenario. The interface is informing virtual switches of this, which
causes one switch to go into recovery mode. [chars] is the interface. The first [enet] is the new
active ID. The second [enet] is the ID that it replaces.
Recommended Action No action is required.