Verifying That Allowed Mac Addresses Are Working Correctly; Exceeded - Juniper JUNOS OS 10.3 - SOFTWARE Manual

Complete Software Guide for Junos

Verifying That Allowed MAC Addresses Are Working Correctly

Purpose
Action
Meaning
Verifying Results of Various Action Settings When the MAC Limit Is Exceeded
Purpose
Action
2938
®
OS for EX Series Ethernet Switches, Release 10.3
Verify that allowed MAC addresses are working on the switch.
Display the MAC cache information after allowed MAC addresses have been configured
on an interface. The following sample shows the MAC cache after 5 allowed MAC
addresses had been configured on interface
also set to a dynamic MAC limit of
user@switch> show ethernet-switching table
Ethernet-switching table:
VLAN MAC address
employee-vlan 00:05:85:3A:82:80
employee-vlan 00:05:85:3A:82:81
employee-vlan 00:05:85:3A:82:83
employee-vlan 00:05:85:3A:82:85
employee-vlan *
Because the MAC limit value for this interface had been set to
configured allowed addresses were learned and thus added to the MAC cache. Because
the fifth address was not learned, an asterisk (*) rather than an address appears in the
column in the last line of the sample output.
MAC address
Verify the results provided by the various action settings for MAC limits—
and —when the limits are exceeded.
shutdown
Display the results of the various action settings.
NOTE: You can view log messages by using the
You can also have the log messages displayed by configuring the monitor
start messages with the
drop action—For MAC limiting configured with a
set to :
5
user@switch> show ethernet-switching table
Ethernet-switching table: 6 entries, 5 learned
VLAN
employee—vlan
employee—vlan
employee—vlan
. In this instance, the interface was
ge/0/0/2
4 with action drop .
5 entries, 4 learned
Type
Learn
Learn
Learn
Learn
Flood
monitor start messages
drop
MAC address Type
* Flood
00:05:85:3A:82:80 Learn
00:05:85:3A:82:81 Learn
Copyright © 2010, Juniper Networks, Inc.
Age Interfaces
0 ge-0/0/2.0
0 ge-0/0/2.0
0 ge-0/0/2.0
0 ge-0/0/2.0
- ge-0/0/2.0
4 , only four of the five
drop , log ,
show log messages command.
command.
action and with the MAC limit
Age Interfaces
- ge-0/0/2.0
0 ge-0/0/2.0
0 ge-0/0/2.0
none ,