HP ProCurve 2520 manual 458

Troubleshooting

Using the Event Log for Troubleshooting Switch Problems

System	Description	Documented in ProCurve Hardware/
Module		Software guide
cos	Class of Service (CoS): Provides priority handling of packets	Advanced Traffic Management Guide
	traversing the switch, based on the IEEE 802.1p priority carried
	by each packet.
	CoS messages also include Quality of Service (QoS) events.
	The QoS feature classifies and prioritizes traffic throughout a
	network, establishing an end-to-end traffic priority policy to
	manage available bandwidth and improve throughput of
	important data.
dhcp	Dynamic Host Configuration Protocol (DHCP) server	Management and Configuration Guide
	configuration: Switch is automatically configured from a
	DHCP (Bootp) server, including IP address, subnet mask,
	default gateway, Timep Server address, and TFTP server
	address.
dhcp v6c	DHCP for IPv6 prefix assignment	IPv6 Management Guide
dhcpr	DHCP relay: Forwards client-originated DHCP packets to a	Advanced Traffic Management Guide
	DHCP network server.
download	Download operation for copying a software version or files to	Management and Configuration Guide
	the switch.
dma	Direct Access Memory (DMA): Transmits and receives	—
	packets between the CPU and the switch.
fault	Fault Detection facility, including response policy and the	Management and Configuration Guide
	sensitivity level at which a network problem should generate
	an alert.
ffi	Find, Fix, and Inform: Event or alert log messages indicating a	Installation and Getting Started Guide
	possible topology loop that cause excessive network activity	Management and Configuration Guide
	and results in the network running slow. FFI messages include
	events on transceiver connections with other network
	devices.
garp	Generic Attribute Registration Protocol (GARP), defined in the	Advanced Traffic Management Guide
	IEEE 802.1D-1998 standard.
gvrp	GARP VLAN Registration Protocol (GVRP): Manages dynamic	Advanced Traffic Management Guide
	802.1Q VLAN operations, in which the switch creates
	temporary VLAN membership on a port to provide a link to
	another port in the same VLAN on another device.
hpesp	Management module that maintains communication between	Installation and Getting Started Guide
	switch ports.
igmp	Internet Group Management Protocol: Reduces unnecessary	Advanced Traffic Management Guide
	bandwidth usage for multicast traffic transmitted from
	multimedia applications on a per-port basis.

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