Cisco Catalyst 2960 Series User Manual

SUMMARY STEPS
1.
configure terminal
2.
interface range Interface_name
3.
ipv6 dhcp guard [attach-policy policy_name [ vlan {vlan_ids | add vlan_ids | except vlan_ids | none |
remove vlan_ids | all} ] | vlan [ {vlan_ids | add vlan_ids | exceptvlan_ids | none | remove vlan_ids |
all} ]
4.
do show running-config interfaceportchannel_interface_name
DETAILED STEPS
PurposeCommand or Action
Enters the global configuration mode.configure terminal
Example:
Switch# configure terminal
Step 1
Specify the port-channel interface name assigned when
the EtherChannel was created. Enters the interface range
configuration mode.
interface range Interface_name
Example:
Switch(config)# interface Po11
Step 2
Enter the do show interfaces summary
command for quick reference to interface names
and types.
Tip
Attaches the DHCP Guard policy to the interface or the
specified VLANs on that interface. The default policy is
attached if the attach-policy option is not used.
ipv6 dhcp guard [attach-policy policy_name [ vlan {vlan_ids
| add vlan_ids | except vlan_ids | none | remove vlan_ids |
all} ] | vlan [ {vlan_ids | add vlan_ids | exceptvlan_ids | none
| remove vlan_ids | all} ]
Step 3
Example:
Switch(config-if-range)# ipv6 dhcp guard
attach-policy example_policy
or
Switch(config-if-range)# ipv6 dhcp guard
attach-policy example_policy vlan 222,223,224
or
Switch(config-if-range)#ipv6 dhcp guard vlan 222,
223,224
Confirms that the policy is attached to the specified
interface without exiting the configuration mode.
do show running-config interfaceportchannel_interface_name
Example:
Switch#(config-if-range)# do show running-config
int po11
Step 4
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
704
How to Configure an IPv6 DHCP Guard Policy

Cisco Catalyst 2960 Series Specifications

General

Layer	Layer 2
Power over Ethernet (PoE)	Available on some models
RAM	128 MB
Flash Memory	32 MB
MAC Address Table Size	8000
Operating Temperature	0°C to 45°C (32 to 113°F)
Ports	24 or 48 x 10/100/1000