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Access Control Lists
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3
CLI
– This example enables DHCP Snooping Information Option, and sets the policy
as replace
.
DHCP Snooping Port Configuration
Use the DHCP Snooping Port Configuration page to configure switch ports as
trusted or untrusted.
Command Usage
• A trusted interface is an interface that is configured to receive only messages from
within the network. An untrusted interface is an interface that is configured to
receive messages from outside the network or fire wall.
• When DHCP snooping is enabled both globally and on a VLAN, DHCP packet
filtering will be performed on any untrusted ports within the VLAN.
• When an untrusted port is changed to a trusted port, all the dynamic DHCP
snooping bindings associated with this port are removed.
• Set all ports connected to DHCP servers within the local network or fire wall to
trusted state. Set all other ports outside the local network or fire wall to untrusted
state.
Command Attributes
•
Trust Status
– Enables or disables port as trusted. (Default: Untrusted)
Console(config)#ip dhcp snooping information option
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Console(config)#ip dhcp snooping information policy replace
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Console#show ip dhcp snooping
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Global DHCP Snooping status: disable
DHCP Snooping Information Option Status: disable
DHCP Snooping Information Policy: replace
DHCP Snooping is configured on the following VLANs:
Verify Source Mac-Address: enable
Interface Trusted
---------- ----------
Eth 1/1 No
Eth 1/2 No
Eth 1/3 No
.
.
.
Summary of Contents for 8126PL2-F
Page 1: ...MANAGEMENT GUIDE ta TigerSwitchTM 10 100 1000 L2 Lite SMB PoE Gigabit Switch SMC8126PL2 F ...
Page 2: ......
Page 6: ...vi ...
Page 22: ...Contents xxii ...
Page 26: ...Tables xxvi ...
Page 48: ...Initial Configuration 2 10 2 ...
Page 117: ...User Authentication 3 69 3 Web Click Security AAA Summary Figure 3 43 AAA Accounting Summary ...
Page 590: ...Command Line Interface 4 302 4 ...
Page 604: ...Glossary Glossary 8 ...
Page 612: ...Index 8 Index ...
Page 613: ......
Page 614: ...149100000023A R01 SMC8126PL2 F ...