See also notification. snmp-authentication14-27 threshold … 14-19

troubleshooting

ACL … C-9 approaches … C-5

browsing the configuration file … C-71 configuring debug destinations … C-42 console access problems … C-6 diagnosing unusual network activity … C-8 diagnostics tools … C-62

displaying switch operation … C-72,C-75

DNS

See DNS. fast-uplinkC-19

ping and link tests … C-63 resource usage … E-2

restoring factory default configuration … C-83 spanning tree … C-19

SSH … C-20

SSH, SFTP, and SCP Operations … A-18 switch software download … A-7

switch won’t reboot, shows => prompt … C-84 traceroute … C-87,C-89

unusual network activity … C-8 using CLI session … C-42

using debug and Syslog messaging using the event log … C-27 viewing switch operation … C-71 web browser access problems … C-6

trunk

distributed … 12-27 number supported … 12-5See port trunk.

TTL 8-3,8-5,8-6,8-7 IP … 8-11

LLDP … 14-42

manual config priority … 8-13 on primary VLAN … 8-4

See also Time-To-Live. Type-Length-Value14-41types of alert log entries 5-22

U

UDLD

changing the keepalive interval … 10-36 changing the keepalive retries … 10-36

configuration … 10-34

configuring for tagged ports … 10-36 enabling on a port … 10-35

event log messages … 10-39 operation … 10-34 overview … 10-33 supported switches … 10-34 viewing configuration … 10-37 viewing statistics … 10-38 warning messages … 10-39

unauthorized access 14-27undersize frames 13-40unicast mode

SNTP … 9-21

Uni-directional Link Detection

See UDLD.

Universal Resource Locator

See URL.

Unix, Bootp 8-14

unrestricted write access 14-13unusual network activity C-8up time B-7

URL

browser interface online help location … 5-14 management … 5-14

management server … 5-13,5-14 ProCurve … 5-14,14-4 support … 5-13,5-14

USB

autorun … A-47–A-52 AutoRun file … A-47 command file … A-47 configuring passwords … A-51 creating a command file … A-47 enabling or disabling … A-51 LED indications … A-49 report outputs … A-49

required software versions … A-47secure-modeA-51

security … A-48 troubleshooting … A-49 viewing config information … A-52

auxiliary port … A-22,A-47 auxiliary port LEDs … A-49 copy command output … A-40 copy configuration file to/from a USB

device … A-35 copy crash data … A-41

Index – 21