![Allied Telesis AT-9000/12PoE Скачать руководство пользователя страница 870](http://html1.mh-extra.com/html/allied-telesis/at-9000-12poe/at-9000-12poe_user-manual_2902298870.webp)
Chapter 58: MAC Address-based Port Security
870
Overview
This feature lets you control access to the ports on the switch based on
the source MAC addresses of the network devices. You specify the
maximum number of source MAC addresses that ports can learn. Ports
that learn their maximum number of addresses discard packets that have
new, unknown addresses, preventing access to the switch by any further
devices.
As an example, if you configure port 3 on the switch to learn no more than
five source MAC addresses, the port learns up to five address and
forwards the ingress packets of the devices that belong to those
addresses. If the port receives ingress packets that have source MAC
addresses other than the five it has already learned, it discards those
packets to prevent the devices from passing traffic through the switch.
Static Versus
Dynamic
Addresses
The MAC addresses that the ports learn can be stored as either static or
dynamic addresses in the MAC address table in the switch. Ports that
store the addresses as static addresses never learn any new addresses
after they have learned their maximum number. In contrast, ports that
store the addresses as dynamic addresses can learn new addresses
when addresses are timed out from the table by the switch. The addresses
are aged out according to the aging time of the MAC address table.
Note
For background information on the aging time of the MAC address
table, refer to “Overview” on page 344.
Intrusion Actions
The intrusion actions define what the switch does when ports that have
learned their maximum number of MAC addresses receive packets that
have unknown source MAC addresses. The possible settings are:
Protect - Ports discard those frames that have unknown MAC
addresses. No other action is taken. For example, if port 14 is
configured to learn 18 addresses, it starts to discard packets with
unknown source MAC addresses after learning 18 MAC
addresses.
Restrict - This is the same as the protect action, except that the
switch sends SNMP traps when the ports discard frames. For
example, if port 12 is configured to learn two addresses, the switch
sends a trap every time the port, after learning two addresses,
discards a packet that has an unknown MAC address.
Shutdown - The switch disables the ports and sends SNMP traps.
For example, if port 5 is configured to learn three MAC addresses,
it is disabled by the switch to prevent it from forwarding any further
traffic if it receives a packet with an unknown source MAC address,
Содержание AT-9000/12PoE
Страница 4: ......
Страница 28: ...Contents 28...
Страница 36: ...Tables 36...
Страница 42: ...42...
Страница 76: ...Chapter 2 Starting a Management Session 76...
Страница 100: ...Chapter 4 Basic Command Line Management Commands 100...
Страница 112: ...112...
Страница 130: ...Chapter 7 Basic Switch Management 130...
Страница 170: ...Chapter 8 Basic Switch Management Commands 170...
Страница 284: ...Chapter 12 Power Over Ethernet Commands 284...
Страница 298: ...Chapter 13 IPv4 and IPv6 Management Addresses 298...
Страница 322: ...Chapter 14 IPv4 and IPv6 Management Address Commands 322...
Страница 342: ...Chapter 16 SNTP Client Commands 342...
Страница 371: ...AT 9000 Switch Command Line User s Guide 371 awplus write Save the configuration...
Страница 388: ...Chapter 19 Enhanced Stacking 388...
Страница 406: ...Chapter 20 Enhanced Stacking Commands 406...
Страница 414: ...Chapter 21 Port Mirror 414...
Страница 422: ...Chapter 22 Port Mirror Commands 422...
Страница 432: ...Chapter 23 Internet Group Management Protocol IGMP Snooping 432...
Страница 452: ...Chapter 25 Multicast Commands 452...
Страница 454: ...454...
Страница 462: ...Chapter 26 File System 462...
Страница 488: ...Chapter 29 Boot Configuration File Commands 488...
Страница 500: ...Chapter 30 File Transfer 500...
Страница 508: ...Chapter 31 File Transfer Commands 508...
Страница 510: ...510...
Страница 528: ...Chapter 33 Event Log Commands 528...
Страница 536: ...Chapter 34 Syslog Client 536...
Страница 544: ...544...
Страница 554: ...Chapter 36 Static Port Trunks 554...
Страница 562: ...Chapter 37 Static Port Trunk Commands 562...
Страница 574: ...Chapter 38 Link Aggregation Control Protocol LACP 574...
Страница 588: ...Chapter 39 LACP Commands 588...
Страница 590: ...590...
Страница 610: ...Chapter 40 STP RSTP and MSTP Protocols 610...
Страница 690: ...Chapter 45 Multiple Spanning Tree Protocol MSTP 690...
Страница 716: ...716...
Страница 740: ...Chapter 47 Port based and Tagged VLANs 740...
Страница 760: ...Chapter 48 Port based and Tagged VLAN Commands 760...
Страница 778: ...Chapter 49 GARP VLAN Registration Protocol 778...
Страница 800: ...Chapter 50 GARP VLAN Registration Protocol Commands 800...
Страница 816: ...Chapter 51 MAC Address based VLANs 816...
Страница 830: ...Chapter 52 MAC Address based VLAN Commands 830...
Страница 850: ...Chapter 55 Voice VLAN Commands 850...
Страница 860: ...Chapter 56 VLAN Stacking 860 Section III File System...
Страница 866: ...Chapter 57 VLAN Stacking Commands 866 Section III File System...
Страница 868: ...868...
Страница 878: ...Chapter 58 MAC Address based Port Security 878...
Страница 892: ...Chapter 59 MAC Address based Port Security Commands 892...
Страница 918: ...Chapter 60 802 1x Port based Network Access Control 918...
Страница 960: ...Chapter 61 802 1x Port based Network Access Control Commands 960...
Страница 962: ...962...
Страница 974: ...Chapter 62 SNMPv1 and SNMPv2c 974...
Страница 1024: ...1024...
Страница 1036: ...Chapter 65 sFlow Agent 1036...
Страница 1140: ...Chapter 68 LLDP and LLDP MED Commands 1140...
Страница 1146: ...Chapter 69 Address Resolution Protocol ARP 1146...
Страница 1154: ...Chapter 70 Address Resolution Protocol ARP Commands 1154...
Страница 1170: ...Chapter 71 RMON 1170 awplus show rmon alarm Use the SHOW RMON ALARM command to verify the new alarm...
Страница 1228: ...Chapter 73 Advanced Access Control Lists ACLs 1228...
Страница 1288: ...1288...
Страница 1300: ...Chapter 76 Local Manager Accounts 1300...
Страница 1310: ...Chapter 77 Local Manager Account Commands 1310...
Страница 1316: ...Chapter 78 Telnet Server 1316...
Страница 1324: ...Chapter 80 Telnet Client 1324...
Страница 1328: ...Chapter 81 Telnet Client Commands 1328...
Страница 1340: ...Chapter 82 Secure Shell SSH Server 1340...
Страница 1350: ...Chapter 83 SSH Server Commands 1350...
Страница 1362: ...Chapter 85 Non secure HTTP Web Browser Server Commands 1362...
Страница 1406: ...Chapter 88 RADIUS and TACACS Clients 1406...
Страница 1446: ...Chapter System Monitoring Commands 1446...
Страница 1476: ...Appendix B Management Software Default Settings 1476...