Verification - Cisco Catalyst 2000 Configuration Handbook

190 Cisco LAN Switching Configuration Handbook
Configure the interface connected to the DHCP server as trusted:
2.
switch(config)# interface fastEthernet 1/0/3
switch(config-if)# ip dhcp snooping trust

Verification

Display the DHCP Snooping configuration for the switch:
1.
switch# show ip dhcp snooping
Switch DHCP snooping is enabled
DHCP snooping is configured on following VLANs:1
Insertion of option 82 is disabled
Option 82 on untrusted port is not allowed
Verification of hwaddr field is enabled
Interface
————————————
FastEthernet1/0/3
Display the DHCP Snooping binding entries for the switch:
2.
switch# show ip dhcp snooping binding
MacAddress
—————————
00:11:85:A5:7B:F5
00:11:85:8D:9A:F9
Total number of bindings: 2
Note DHCP servers connected to the untrusted port cannot assign IP addresses to the
clients.
Trusted
———-
yes
IpAddress Lease
(sec)
————— ———
10.0.0.2 86391
10.0.0.3 86313
Rate limit (pps)
————————
unlimited
Type VLAN Interface
——————- —— ———————
dhcp-snooping 1
dhcp-snooping 1
FastEthernet1/0/1
FastEthernet1/0/2