HP ProCurve 1600M, Management And Configuration Manual

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Troubleshooting
Debug and Syslog Messaging Operation
Debug and Syslog Messaging Operation
The switch’s Event Log records switch-level progress, status, and warning
messages. The Debug/System-Logging (
Syslog ) feature provides a method for
recording messages you can use to help in debugging network-level problems,
such as routing misconfigurations and other network protocol details.
Debug enables you to specify the types of event notification messages to send
to external devices. Debug messaging reports on these event types:
■
ACL “deny” matches
■ Selected IP routing events
■
Events that generate messages for the switch’s Event Log
You can configure the switch to send debug messages to these destinations:
■ Up to six Syslog servers
■
A CLI session through direct RS-232 console, Telnet, or SSH
Table C-4. Event Messaging Structure
Event Notifica­
tion Logging — Automatic. Sends switch-level event messages to the switch’s Event Log. Debug and
Syslog add the capability of directing Event Log messaging to an external file.
Optional Debug
Commands
all Assigns debug logging to the configured debug destination(s) for all ACL, Event Log,
IP-OSPF, and IP-RIP options.
acl Assigns ACL Syslog logging to the debug destination(s). When there is a match with
a “deny” ACE, directs the resulting message to the configured debug destination(s).
arp-protect Assigns dynamic ARP-protection messages to the debug destination(s).
dhcp-snooping Assigns DHCP-snooping messages to the debug destination(s).
event Assigns standard Event Log messages to the debug destination(s). (These messages
are also sent to the switch’s Event Log, regardless of whether you enable this option.)
IP
ospf Assigns OSPF event logging to the debug destination(s).
rip Assigns RIP event logging to the debug destination(s).
lldp Assigns LLDP debug logging to the debug destination(s).
Debug
Destinations Destination logging Disables or re-enables Syslog logging if a Syslog server is already
configured by the
logging < ip-addr > command. Optionally speci­
fies the destination (facility) subsystem used by the Syslog servers.
session Assigns or re-assigns destination status to the terminal device most
recently using this command to request debug output.
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