HP 6120 manual 483

Troubleshooting

Using the Event Log for Troubleshooting Switch Problems

System	Description	Documented in ProCurve Hardware/
Module		Software guide
stp	Multiple-instance spanning tree protocol/MSTP (802.1s):	Advanced Traffic Management Guide
	Ensures that only one active path exists between any two
	nodes in a group of VLANs in the network. MSTP operation is
	designed to avoid loops and broadcast storms of duplicate
	messages that can bring down the network.
system	Switch management, including system configuration, switch	Management and Configuration Guide
	bootup, activation of boot ROM image, memory buffers, traffic	Access Security Guide
	and security filters.
	System messages also include events from Management
	interfaces (menu, CLI, web browser, ProCurve Manager) used
	to reconfigure the switch and monitor switch status and
	performance.
tacacs	TACACS+ authentication: A central server is used to control	Access Security Guide
	access to the switches (and other TACACS-aware devices) in
	the network through a switch’s console port (local access) or
	Telnet (remote access).
tcp	Transmission Control Protocol: A transport protocol that runs	Advanced Traffic Management Guide
	on IP and is used to set up connections.
telnet	Session established on the switch from a remote device	Management and Configuration Guide
	through the Telnet virtual terminal protocol.
tftp	Trivial File Transfer Protocol: Supports the download of files to	Management and Configuration Guide
	the switch from a TFTP network server.
timep	Time Protocol: Synchronizes and ensures a uniform time	Management and Configuration Guide
	among interoperating devices.
udld	Uni-directional Link Detection: Monitors a link between two	Access Security Guide
	switches and blocks the ports on both ends of the link if the
	link fails at any point between the two devices.
update	Updates (TFTP or serial) to ProCurve software and updates to	Management and Configuration Guide
	running-config and start-up config files
usb	Auxiliary port that allows you to connect external devices to	Installation and Getting Started Guide
	the switch.

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