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EX2500 Ethernet Switch Configuration Guide
52 Using ACL Filters
Figure 11: QoS Model
The basic QoS model works as follows:
Classify traffic:
Read the DSCP value.
Read the 802.1p priority value.
Match ACL filter parameters.
Perform actions:
Permit packets.
Deny packets.
Map the 802.1p priority to a COS queue.
Map the DSCP to a COS queue.
Set the number of COS queues (1 through 8).
Queue and schedule traffic:
Place packets in one of the COS queues.
Schedule transmission based on the COS queue.
Using ACL Filters
Access Control Lists (ACLs) are filters that allow you to classify data packets
according to a particular content in the packet header, such as the source address,
destination address, source port number, destination port number, and others.
Packet classifiers identify flows for more processing. Each filter defines the
conditions that must match for inclusion in the filter, and also the actions that are
performed when a match is made.
ACLs are used to control whether packets are forwarded or blocked at the switch
ports. ACLs can provide basic security for access to the network. For example, you
can use an ACL to permit one host to access a part of the network, and deny
another host access to the same area.
Ports
ACL
Filter
Permit/Deny
Classify
Packets
Perform
Actions
Egress
Ingress
COS
Queue
Queue and
Schedule
- Configuration Guide 1
- Table of Contents 3
- Part 2 Appendixes 6
- Part 3 Indexes 6
- List of Figures 7
- List of Tables 10
- About This Guide 11
- Documentation Conventions 12
- Documentation Feedback 13
- Requesting Technical Support 13
- Opening a Case with JTAC 14
- Accessing the Switch 17
- Using Telnet 19
- Using SNMP 21
- SNMPv1, SNMPv2 21
- Default Configuration 22
- User Configuration 22
- Configuring SNMP Trap Hosts 23
- Securing Access to the Switch 24
- Switch User Accounts 27
- TACACS+ Authentication 28
- Secure Shell 31
- End User Access Control 32
- User Access Control 33
- Listing Current Users 34
- Chapter 2 35
- VLAN Numbers 36
- PVID Numbers 36
- VLAN Tagging 37
- 24 VLAN Tagging 38
- VLAN Tagging 25 39
- Chapter 2: VLANs 39
- VLAN Configuration Rules 40
- Component Description 41
- Private VLANs 43
- Private VLAN Ports 43
- Spanning Tree Protocol 45
- Bridge Priority 46
- Port Priority 47
- Port Path Cost 47
- Creating a VLAN 48
- Rules for VLAN Tagged Ports 48
- Rapid Spanning Tree Protocol 49
- Port State Changes 49
- Port Type and Link Type 50
- RSTP Configuration Guidelines 50
- RSTP Configuration Example 50
- Per VLAN Rapid Spanning Tree 51
- Configuring PVRST 52
- MSTP Region 53
- Common Internal Spanning Tree 53
- MSTP Configuration Guidelines 53
- Fast Uplink Convergence 55
- Configuration Guidelines 56
- Ports and Trunking 57
- Built-In Fault Tolerance 58
- TRUNK 3: PORTS 2, 9, AND 16 59
- TRUNK 1: PORTS 1, 11, AND 18 59
- Chapter 4: Ports and Trunking 61
- Actor Switch Partner Switch 1 62
- LACP Configuration Guidelines 63
- Configuring LACP 63
- (3 seconds), instead 64
- Quality of Service 65
- Permit/Deny 66
- MAC Extended ACLs 67
- IP Standard ACLs 67
- IP Extended ACLs 68
- Understanding ACL Priority 69
- Assigning ACLs to a Port 70
- Viewing ACL Statistics 70
- ACL Configuration Examples 70
- Using ACL Filters 57 71
- Chapter 5: Quality of Service 71
- Using ACL Filters 72
- Using Storm Control Filters 73
- Broadcast Storms 73
- Configuring Storm Control 73
- Per Hop Behavior 75
- QoS Levels 76
- DSCP Mapping 76
- Priority 77
- VLAN Identifier (VID) 77
- Queuing and Scheduling 78
- Remote Monitoring 79
- RMON Group 1—Statistics 80
- RMON Group 2—History 81
- History MIB Object ID 81
- Configuring RMON History 81
- RMON Group 3—Alarms 82
- Alarm MIB Objects 82
- Configuring RMON Alarms 82
- RMON Group 9—Events 83
- 70 RMON Group 9—Events 84
- Chapter 7 85
- FastLeave 86
- IGMPv3 Snooping 87
- Static Multicast Router 88
- Detection 89
- Failure Detection Pair 90
- UFD Configuration Guidelines 90
- UFD Configuration Example 91
- Monitoring UFD 91
- 78 Monitoring UFD 92
- Appendixes 93
- 80 Appendixes 94
- Appendix A 95
- Configuring Port Mirroring 96
- Index on page 85 97
- 84 Indexes 98
- Index 85 99
- 86 Index 100
- Index 87 101
- 88 Index 102
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