3 ip arp inspection log-buffer – CANOGA PERKINS CanogaOS Command Reference User Manual

Page 689

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CanogaOS Command Line Reference

Revision 1.02

Proprietary & Confidential Canoga Pertkins Metro Ethernet Switches

Page 689 of 855

34.3 ip arp inspection log-buffer

To configure the parameters that are associated with the logging buffer, use the ip arp inspection
log-buffer
command in global configuration mode. To disable the parameters, use the no form of this
command.


Command Syntax

ip arp inspection log-buffer {entries number | logs number interval seconds}
no ip arp inspection log-buffer {entries | logs}

entries number

Number of entries from the logging buffer; the range is from 10 to 1024.

log number

Number of entries to be logged in an interval; the range is from 0 to 1024.
A 0 value indicates that entries should not be logged out of this buffer.

interval seconds

Logging rate; the range is from 0 to 86400 (1 day). A 0 value indicates an
immediate log.


Default

When dynamic ARP inspection is enabled, denied, or dropped, the ARP packets are logged.
The number of entries is set to 32.
The number of logging entries is limited to 5 per second.
The interval is set to 1.


Command Mode

Global configuration


Usage

The first dropped packet of a given flow is logged immediately. The subsequent packets for the same
flow are registered but are not logged immediately. Registering these packets is done in a log buffer
that is shared by all the VLANs. Entries from this buffer are logged on a rate-controlled basis.


Examples

This example shows how to configure the logging buffer to hold up to 45 entries:
Switch# config terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# ip arp inspection log-buffer entries 45
Switch(config)# end
Switch# show ip arp inspection log
Total Log Buffer Size : 45
Syslog rate : 5 entries per 1 seconds.
No entries in log buffer.
Switch#


Related Commands

arp access-list

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