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GS-2750 User’s Guide
291
C
H A P T E R
36
MAC Table
This chapter introduces the
MAC Table
screen.
36.1 MAC Table Overview
The
MAC Table
screen (a MAC table is also known as a filtering database) shows how
frames are forwarded or filtered across the Switch’s ports. When a device (which may belong
to a VLAN group) sends a packet which is forwarded to a port on the Switch, the MAC
address of the device is shown on the Switch’s
MAC Table
. It also shows whether the MAC
address is dynamic (learned by the Switch) or static (manually entered in the
Static MAC
Forwarding
screen).
The Switch uses the
MAC Table
to determine how to forward frames. See the following
figure.
1
The Switch examines a received frame and learns the port from which this source MAC
address came.
2
The Switch checks to see if the frame's destination MAC address matches a source MAC
address already learned in the
MAC Table
.
• If the Switch has already learned the port for this MAC address, then it forwards the frame
to that port.
• If the Switch has not already learned the port for this MAC address, then the frame is
flooded to all ports. Too much port flooding leads to network congestion.
• If the Switch has already learned the port for this MAC address, but the destination port is
the same as the port it came in on, then it filters the frame.
Содержание GS-2750
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Страница 7: ...Safety Warnings GS 2750 User s Guide 7 This product is recyclable Dispose of it properly ...
Страница 8: ...Safety Warnings GS 2750 User s Guide 8 ...
Страница 26: ...List of Figures GS 2750 User s Guide 26 ...
Страница 32: ...32 ...
Страница 40: ...Chapter 2 Hardware Installation and Connection GS 2750 User s Guide 40 ...
Страница 48: ...48 ...
Страница 58: ...Chapter 4 The Web Configurator GS 2750 User s Guide 58 ...
Страница 64: ...Chapter 5 Initial Setup Example GS 2750 User s Guide 64 ...
Страница 70: ...Chapter 6 System Status and Port Statistics GS 2750 User s Guide 70 ...
Страница 82: ...Chapter 7 Basic Setting GS 2750 User s Guide 82 ...
Страница 84: ...84 ...
Страница 115: ...Chapter 11 Spanning Tree Protocol GS 2750 User s Guide 115 Figure 52 Advanced Application Spanning Tree Protocol MSTP ...
Страница 120: ...Chapter 11 Spanning Tree Protocol GS 2750 User s Guide 120 ...
Страница 134: ...Chapter 15 Link Aggregation GS 2750 User s Guide 134 ...
Страница 144: ...Chapter 17 Port Security GS 2750 User s Guide 144 ...
Страница 155: ...Chapter 19 Policy Rule GS 2750 User s Guide 155 Figure 73 Policy Example example ...
Страница 156: ...Chapter 19 Policy Rule GS 2750 User s Guide 156 ...
Страница 160: ...Chapter 20 Queuing Method GS 2750 User s Guide 160 ...
Страница 166: ...Chapter 21 VLAN Stacking GS 2750 User s Guide 166 ...
Страница 194: ...Chapter 23 Authentication Accounting GS 2750 User s Guide 194 ...
Страница 219: ...219 PART IV IP Application Static Routing 221 RIP 223 Differentiated Services 225 DHCP 233 VRRP 243 ...
Страница 220: ...220 ...
Страница 232: ...Chapter 28 Differentiated Services GS 2750 User s Guide 232 ...
Страница 242: ...Chapter 29 DHCP GS 2750 User s Guide 242 ...
Страница 252: ...Chapter 30 VRRP GS 2750 User s Guide 252 ...
Страница 254: ...254 ...
Страница 278: ...Chapter 32 Access Control GS 2750 User s Guide 278 ...
Страница 280: ...Chapter 33 Diagnostic GS 2750 User s Guide 280 ...
Страница 284: ...Chapter 34 Syslog GS 2750 User s Guide 284 ...
Страница 298: ...Chapter 39 Routing Table GS 2750 User s Guide 298 ...
Страница 301: ...301 PART VI Product Specifications Product Specifications 303 ...
Страница 302: ...302 ...
Страница 309: ...309 PART VII Appendices and Index IP Addresses and Subnetting 311 Legal Information 319 Customer Support 323 Index 329 ...
Страница 310: ...310 ...
Страница 322: ...Appendix B Legal Information GS 2750 User s Guide 322 ...
Страница 328: ...Appendix C Customer Support GS 2750 User s Guide 328 ...