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Example 2 Show DHCP-snooping statistics

HP Switch(config)# show dhcp-snooping stats

Packet type Action Reason Count

----------- ------- ---------------------------- ---------

server forward from trusted port 8

client forward to trusted port 8

server drop received on untrusted port 2

server drop unauthorized server 0

client drop destination on untrusted port 0

client drop untrusted option 82 field 0

client drop bad DHCP release request 0

client drop failed verify MAC check 0

Enabling DHCP snooping on VLANs

DHCP snooping on VLANs is disabled by default. To enable DHCP snooping on a VLAN or range

of VLANs enter this command:

HP Switch(config)# dhcp-snooping vlan <vlan-id-range>

You can also use this command in the vlan context, where you cannot enter a range of VLANs for

snooping.

Example 3 “DCHP snooping on a VLAN” shows DHCP snooping enabled on VLAN 4.

Example 3 DCHP snooping on a VLAN

HP Switch(config)# dhcp-snooping vlan 4

HP Switch(config)# show dhcp-snooping

DHCP Snooping Information

DHCP Snooping : Yes

Enabled Vlans : 4

Verify MAC : Yes

Option 82 untrusted policy : drop

Option 82 Insertion : Yes

Option 82 remote-id : mac

Configuring DHCP snooping trusted ports

By default, all ports are untrusted. To configure a port or range of ports as trusted, enter this

command (see Example 4 “Setting trusted ports”).

HP Switch(config)# dhcp-snooping trust <port-list>

You can also use this command in the interface context, in which case you cannot enter a port list.

Configuring advanced threat protection 9

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