Cisco Catalyst 3750-E User Manual

22-22
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-08
Chapter 22 Configuring DHCP Features and IP Source Guard
Configuring IP Source Guard
Switch(config)# interface gigabitethernet1/0/3
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 10
Switch(config-if)# ip device tracking maximum 5
Switch(config-if)# ip verify source tracking
Switch(config-if)# end
Switch# show ip
verify source
Interface Filter-type Filter-mode IP-address Mac-address Vlan
--------- ----------- ----------- --------------- ----------------- ----
Gi1/0/3 ip trk active 40.1.1.24 10
Gi1/0/3 ip trk active 40.1.1.20 10
Gi1/0/3 ip trk active 40.1.1.21 10
This example shows how to enable IPSG for static hosts with IP-MAC filters on a Layer 2 access port,
to verify the valid IP-MAC bindings on the interface Gi1/0/3, and to verify that the number of bindings
on this interface has reached the maximum:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# ip device tracking
Switch(config)# interface gigabitethernet1/0/3
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 1
Switch(config-if)# ip device tracking maximum 5
Switch(config-if)# switchport port-security
Switch(config-if)# switchport port-security maximum 5
Switch(config-if)# ip verify source tracking port-security
Switch(config-if)# end
Switch# show ip
verify source
Interface Filter-type Filter-mode IP-address Mac-address Vlan
--------- ----------- ----------- --------------- ----------------- ----
Gi1/0/3 ip-mac trk active 40.1.1.24 00:00:00:00:03:04 1
Gi1/0/3 ip-mac trk active 40.1.1.20 00:00:00:00:03:05 1
Gi1/0/3 ip-mac trk active 40.1.1.21 00:00:00:00:03:06 1
Gi1/0/3 ip-mac trk active 40.1.1.22 00:00:00:00:03:07 1
Gi1/0/3 ip-mac trk active 40.1.1.23 00:00:00:00:03:08 1
This example displays all IP or MAC binding entries for all interfaces. The CLI displays all active as
well as inactive entries. When a host is learned on a interface, the new entry is marked as active. When
the same host is disconnected from that interface and connected to a different interface, a new IP or MAC
binding entry displays as active as soon as the host is detected. The old entry for this host on the previous
interface is marked as INACTIVE.
Switch# show ip device tracking all
IP Device Tracking = Enabled
IP Device Tracking Probe Count = 3
IP Device Tracking Probe Interval = 30
---------------------------------------------------------------------
IP Address MAC Address Vlan Interface STATE
---------------------------------------------------------------------
200.1.1.8 0001.0600.0000 8 GigabitEthernet1/0/1 INACTIVE
200.1.1.9 0001.0600.0000 8 GigabitEthernet1/0/1 INACTIVE
200.1.1.10 0001.0600.0000 8 GigabitEthernet1/0/1 INACTIVE
200.1.1.1 0001.0600.0000 9 GigabitEthernet1/0/2 ACTIVE
200.1.1.1 0001.0600.0000 8 GigabitEthernet1/0/1 INACTIVE
200.1.1.2 0001.0600.0000 9 GigabitEthernet1/0/2 ACTIVE
200.1.1.2 0001.0600.0000 8 GigabitEthernet1/0/1 INACTIVE
200.1.1.3 0001.0600.0000 9 GigabitEthernet1/0/2 ACTIVE
200.1.1.3 0001.0600.0000 8 GigabitEthernet1/0/1 INACTIVE
200.1.1.4 0001.0600.0000 9 GigabitEthernet1/0/2 ACTIVE
200.1.1.4 0001.0600.0000 8 GigabitEthernet1/0/1 INACTIVE

Cisco Catalyst 3750-E Specifications

General

Series	Catalyst 3750-E
Switching Capacity	32 Gbps
Stacking Bandwidth	32 Gbps
StackWise Plus	Yes
Layer Support	Layer 3
MAC Address Table Size	12, 000 entries
RAM	256 MB
Flash Memory	64 MB
Memory	256 MB DRAM, 64 MB Flash
Operating Temperature	32 to 113°F (0 to 45°C)
Ports	48 10/100/1000 Ethernet ports
Form Factor	Rack-mountable
Jumbo Frame Support	Yes
Input Voltage	100 to 240 VAC
Storage Temperature	-25 to 70 °C
Relative Humidity	10 to 90% non-condensing