Configuring Log Filters - Juniper JUNOSE 11.1.X - SYSTEM EVENT LOGGING REFERENCE GUIDE 3-24-2010 Reference Manual

JUNOSe 11.1.x System Event Logging Reference Guide

Configuring Log Filters

Many event categories contain filters so you can further refine the type of information
that the system logs. For example, when logging BGP connections, you can limit the
information logged to a specific access class, peer, route map, or virtual router.
You define filters when you set the log severity for an event category. The online
Help shows the options you can set for each filter.
NOTE: You can use the packet flow monitoring feature to create user-defined
classification parameters that specify the packet data that is logged. See Packet
Tagging Overview.
The following example creates a filter that logs BGP connection information at the
debug severity level on traffic that matches access list ListOne, and is incoming traffic
to virtual router default.
host1(config)# log severity debug bgpevents ?
access-class Select an access list for the filter
in Select import/in direction for the filter
out Select export/out direction for the filter
peer Select a peer IP address for the filter
route-map Select a route map for the filter
router Identify an instance of a virtual router
<cr>
host1(config)# log severity debug bgpevents access-class ?
WORD The access list
host1(config)# log severity debug bgpevents access-class ListOne ?
filtering-router Identify virtual router where access-class/route-map are defined
in Select import/in direction for the filter
out Select export/out direction for the filter
route-map Select a route map for the filter
<cr>
host1(config)# log severity debug bgpevents access-class ListOne route-map ?
WORD The route map
host1(config)# log severity debug bgpevents access-class ListOne route-map default ?
filtering-router Identify virtual router where access-class/route-map are defined
in Select import/in direction for the filter
out Select export/out direction for the filter
<cr>
host1(config)# log severity debug bgpevents access-class ListOne route-map default in
The next example limits the logging of PPP debug events to traffic to or from the
POS interface in slot 2/0.
host1(config)#log severity debug ppp ?
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Configuring Log Filters
atm Specify an ATM PPP interface
fastEthernet Specify a fastEthernet interface
gigabitEthernet Specify a gigabitEthernet interface
mlppp Specify an MLPPP network interface
pos Specify a POS PPP interface
serial Specify a serial PPP interface