addresses are on the same subnet. In this mode, hosts on the same subnet
communicate without proxy ARP. We recommend that you use this mode on the switch.
•
Unrestricted—The switch responds to all ARP requests for which it has a route to the
destination. This is the default mode (because it is the default mode in Juniper Networks
Junos operating system (Junos OS) configurations other than those on the switch).
We recommend using restricted mode on the switch.
Best Practices for Proxy ARP on EX Series Switches
We recommend these best practices for configuring proxy ARP on the switches:
•
Set proxy ARP to restricted mode.
•
Use restricted mode when configuring proxy ARP on RVIs.
•
If you set proxy ARP to unrestricted, disable gratuitous ARP requests on each interface
enabled for proxy ARP.
Related
Documentation
Example: Configuring Proxy ARP on an EX Series Switch on page 2901
•
•
Configuring Proxy ARP (CLI Procedure) on page 1395
Understanding MAC Notification on EX Series Switches
Juniper Networks EX Series Switches track clients on a network by storing Media Access
Control (MAC) addresses in the Ethernet switching table on the switch. When switches
learn or unlearn a MAC address, SNMP notifications can be sent to the network
management system at regular intervals to record the addition or removal of the MAC
address. This process is known as MAC notification.
The MAC Notification MIB controls MAC notification for the network management system.
For general information on the MAC Notification MIB, see the
Junos OS Network
Management Configuration Guide
at
http://www.juniper.net/techpubs/software/junos/index.html
.
The MAC notification interval defines how often these SNMP notifications are sent to
the network management system. The MAC notification interval works by tracking all of
the MAC address additions or removals on the switch over a period of time and then
sending all of the tracked MAC address additions or removals to the network management
server at the end of the interval. For instance, if the MAC notification interval is set to 10,
all of the MAC address addition and removal SNMP notifications are sent to the network
management system every 10 seconds.
Enabling MAC notification allows users to monitor the addition and removal of MAC
addresses from the Ethernet switching table remotely using a network management
system. The advantage of setting a high MAC notification interval is that the amount of
network traffic is reduced because updates are sent less frequently. The advantage of
setting a low MAC notification interval is that the network management system is better
synchronized with the switch.
Copyright © 2010, Juniper Networks, Inc.
1302
Complete Software Guide for Junos
®
OS for EX Series Ethernet Switches, Release 10.3
Summary of Contents for JUNOS OS 10.3 - SOFTWARE
Page 325: ...CHAPTER 17 Operational Mode Commands for System Setup 229 Copyright 2010 Juniper Networks Inc ...
Page 1323: ...CHAPTER 56 Operational Mode Commands for Interfaces 1227 Copyright 2010 Juniper Networks Inc ...
Page 2841: ...CHAPTER 86 Operational Commands for 802 1X 2745 Copyright 2010 Juniper Networks Inc ...
Page 3367: ...CHAPTER 113 Operational Mode Commands for CoS 3271 Copyright 2010 Juniper Networks Inc ...
Page 3435: ...CHAPTER 120 Operational Mode Commands for PoE 3339 Copyright 2010 Juniper Networks Inc ...
Page 3529: ...CHAPTER 126 Operational Mode Commands for MPLS 3433 Copyright 2010 Juniper Networks Inc ...