Dell PowerConnect M6348 Configuration Guide - Page 39

Port Security, Overview, Operation, CLI Examples, Example #1: Enable Port Security on an Interface

Get Dell PowerConnect M6348 PDF manuals and user guides View all Dell PowerConnect M6348 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 39 highlights

Port Security This section describes the Port Security feature. Overview Port Security: • Allows for limiting the number of MAC addresses on a given port. • Packets that have a matching MAC address (secure packets) are forwarded; all other packets (unsecure packets) are restricted. • Enabled on a per port basis. • When locked, only packets with allowable MAC address will be forwarded. • Supports both dynamic and static. • Implement two traffic filtering methods. These methods can be used concurrently. - Dynamic Locking: User specifies the maximum number of MAC addresses that can be learned on a port. The maximum number of MAC addresses is 100. After the limit is reached, additional MAC addresses are not learned. Only frames with an allowable source MAC address are forwarded. - Static Locking: User manually specifies a list of static MAC addresses for a port. Operation Port Security: • Helps secure network by preventing unknown devices from forwarding packets. • When link goes down, all dynamically locked addresses are 'freed.' • If a specific MAC address is to be set for a port, set the dynamic entries to 0, then only allow packets with a MAC address matching the MAC address in the static list. • Dynamically locked MAC addresses are aged out if another packet with that address is not seen within the age-out time. The user can set the time-out value. • Dynamically locked MAC addresses are eligible to be learned by another port. • Static MAC addresses are not eligible for aging. CLI Examples The following are examples of the commands used in the Port Security feature. Example #1: Enable Port Security on an Interface console(config)#interface ethernet 1/g18 console(config-if-1/g18)#port security ? Press enter to execute the command. Switching Configuration 39

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
Switching Configuration
39
Port Security
This section describes the Port Security feature.
Overview
Port Security:
•
Allows for limiting the number of MAC addresses on a given port.
•
Packets that have a matching MAC address (secure packets) are forwarded; all other packets (unsecure
packets) are restricted.
•
Enabled on a per port basis.
•
When locked, only packets with allowable MAC address will be forwarded.
•
Supports both dynamic and static.
•
Implement two traffic filtering methods. These methods can be used concurrently.
–
Dynamic Locking: User specifies the maximum number of MAC addresses that can be learned on
a port. The maximum number of MAC addresses is 100. After the limit is reached, additional
MAC addresses are not learned. Only frames with an allowable source MAC address are forwarded.
–
Static Locking: User manually specifies a list of static MAC addresses for a port.
Operation
Port Security:
•
Helps secure network by preventing unknown devices from forwarding packets.
•
When link goes down, all dynamically locked addresses are ‘freed.’
•
If a specific MAC address is to be set for a port, set the dynamic entries to 0, then only allow packets
with a MAC address matching the MAC address in the static list.
•
Dynamically locked MAC addresses are aged out if another packet with that address is not seen within
the age-out time. The user can set the time-out value.
•
Dynamically locked MAC addresses are eligible to be learned by another port.
•
Static MAC addresses are not eligible for aging.
CLI Examples
The following are examples of the commands used in the Port Security feature.
Example #1: Enable Port Security on an Interface
console(config)#interface ethernet 1/g18
console(config-if-1/g18)#port security ?
<cr>
Press enter to execute the command.