AT-9000 Switch Command Line User’s Guide
1197
Actions
The action defines the response to packets that match the filtering criterion
of the ACL. There are three possible actions:
Permit— A permit action instructs ports to forward ingress packets
that match the specified traffic flow of the ACL. By default, all
ingress packets are forwarded by the ports.
Deny— A deny action instructs ports to discard the specified
ingress packets.
Copy to mirror— This action causes a port to copy all ingress
packets that match the ACL to the destination port of the mirror
port. This action must be used in conjunction with the port mirror
feature, explained in Chapter 21, “Port Mirror” on page 407.
ID Numbers
For both Numbered IPv4 ACLs and Numbered MAC ACLs, you must
assign each ACL a unique ID number. There are two ID number ranges
that are displayed in Table 120.
How Ingress
Packets are
Compared
Against ACLs
As stated previously, ports that do not have an ACL forward
all
ingress
packets. Ports with one or more deny ACLs discard ingress packets that
match the ACLs and forward all other traffic. A port that has one ACL that
specifies a particular source IP address, for example, discards all ingress
packets with the specified source address and forwards all other traffic. In
situations where a port has more than one deny ACL, packets are
discarded at the first match.
Since ports forward all ingress packets unless they have deny ACLs,
permit ACLs are only necessary in situations where you want a port to
forward packets that are a subset of a larger traffic flow that is blocked, for
example, a port that forwards only packets having a specified destination
IP address. A permit ACL specifies the packets with the intended
destination IP address, and a deny ACL specifies all traffic.
When ports have both permit and deny ACLs, you must add the permit
ACLs first, because packets are compared against the ACLs in the order
they are added to the ports. If a permit ACL is added after a deny ACL,
ports are likely to discard packets specified by the permit ACL, thus
causing them to block packets you want them to forward. This concept is
illustrated in the examples in this chapter.
Table 120. Access Control List ID Number Ranges
Type of ACL
ID Number Range
Numbered IPv4 ACLs
3000 - 3699
Numbered MAC ACLs
4000 - 4699
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...