GS2200 Series User’s Guide
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H A P T E R
2 6
Loop Guard
26.1 Overview
This chapter shows you how to configure the Switch to guard against loops on the edge of your
network.
Loop guard allows you to configure the Switch to shut down a port if it detects that packets sent out
on that port loop back to the Switch. While you can use Spanning Tree Protocol (STP) to prevent
loops in the core of your network. STP cannot prevent loops that occur on the edge of your
network.
Figure 134
Loop Guard vs. STP
Refer to
for more information.
26.1.1 What You Can Do
Use the Loop Guard screen (
) to enable loop guard on the Switch and in
specific ports.
26.1.2 What You Need to Know
Loop guard is designed to handle loop problems on the edge of your network. This can occur when
a port is connected to a Switch that is in a loop state. Loop state occurs as a result of human error.
It happens when two ports on a switch are connected with the same cable. When a switch in loop
state sends out broadcast messages the messages loop back to the switch and are re-broadcast
again and again causing a broadcast storm.
If a switch (not in loop state) connects to a switch in loop state, then it will be affected by the
switch in loop state in the following way:
STP
Loop Guard
Содержание GS2200 Series
Страница 15: ...15 PART I User s Guide...
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Страница 31: ...31 PART II Technical Reference...
Страница 32: ...32...
Страница 76: ...Chapter 8 Basic Setting GS2200 Series User s Guide 76...
Страница 92: ...Chapter 9 VLAN GS2200 Series User s Guide 92 Figure 60 Port Based VLAN Setup Port Isolation...
Страница 230: ...Chapter 29 Error Disable GS2200 Series User s Guide 230...
Страница 248: ...Chapter 33 ARP Learning GS2200 Series User s Guide 248...
Страница 302: ...Appendix A Changing a Fuse GS2200 Series User s Guide 302...
Страница 306: ...Appendix B Common Services GS2200 Series User s Guide 306...
Страница 309: ...Appendix C Legal Information GS2200 Series User s Guide 309 ROHS...
Страница 310: ...Appendix C Legal Information GS2200 Series User s Guide 310...
Страница 320: ...Index GS2200 Series User s Guide 320...