Owner's Manual
222 | Chapter 8. Status Monitoring and Statistics
NETGEAR 8800 User Manual
Matching Expressions
You can configure the switch so messages reaching the target match a specified match
expression. The message text is compared with the configured match expression to
determine whether to pass the message on. To require that messages match a match
expression, use the following command:
configure log target [console | memory-buffer | nvram | primary-msm |
primary-node| backup-msm | backp-node | session | syslog [all | <ipaddress> |
<ipPort> {vr <vr_name>} [local0 ... local7]]] match [any |<match-expression>]
The messages reaching the target will match the match-expression, a simple regular
expression. The formatted text string that makes up the message is compared with the match
expression and is passed to the target if it matches. This command does not affect the filter in
place for the target, so the match expression is compared only with the messages that have
already passed the target’s filter. For more information on controlling the format of the
messages, see
Formatting Event Messages on page 225.
Simple Regular Expressions
A simple regular expression is a string of single characters including the dot character (.),
which are optionally combined with quantifiers and constraints. A dot matches any single
character, while other characters match only themselves (case is significant). Quantifiers
include the star character (*) that matches zero or more occurrences of the immediately
preceding token. Constraints include the caret character (^) that matches at the beginning of
a message and the currency character ($) that matches at the end of a message. Bracket
expressions are not supported. There are a number of sources available on the Internet and
in various language references describing the operation of regular expressions.
Table 28
shows some examples of regular expressions.
Table 28. Simple Regular Expressions
Regular Expression Matches Does Not Match
port port 2:3
import cars
portable structure
poor
por
pot
..ar baar
bazaar
rebar
bar
port.*vlan port 2:3 in vlan test
add ports to vlan
port/vlan
myvlan$ delete myvlan
error in myvlan
myvlan port 2:3
ports 2:4,3:4 myvlan link down