NOTE:
When you configure storm control bandwidth on an aggregated
Ethernet interface, the storm control level for each member of the aggregated
Ethernet interface is set to that bandwidth. For example, if you configure a
storm control bandwidth of 15000 Kbps on ae1, and ae1 has two members,
ge-0/0/0
and ge-0/0/1, each member has a storm control level of 15000
Kbps. Thus, the storm control level on ae1 allows a traffic rate of up to 30000
Kbps of combined broadcast and unknown unicast traffic.
Related
Documentation
Example: Configuring Storm Control to Prevent Network Outages on EX Series Switches
on page 2793
•
•
Configuring Autorecovery From the Disabled State on Secure or Storm Control Interfaces
(CLI Procedure) on page 2796
Understanding Unknown Unicast Forwarding on EX Series Switches
Unknown unicast traffic consists of unicast packets with unknown destination MAC
addresses. By default, the switch floods these unicast packets that are traveling in a
VLAN to all interfaces that are members of the VLAN. Forwarding this type of traffic to
interfaces on the switch can trigger a security issue. The LAN is suddenly flooded with
packets, creating unnecessary traffic that leads to poor network performance or even a
complete loss of network service. This is known as a traffic storm.
To prevent a storm, you can disable the flooding of unknown unicast packets to all
interfaces by configuring one VLAN or all VLANs to forward and unknown unicast traffic
to a specific trunk interface. This channels the unknown unicast traffic to a single interface.
Related
Documentation
•
Understanding Storm Control on EX Series Switches on page 2791
•
Example: Configuring Storm Control to Prevent Network Outages on EX Series Switches
on page 2793
•
Configuring Unknown Unicast Forwarding (CLI Procedure) on page 2795
Copyright © 2010, Juniper Networks, Inc.
2792
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 ...