Cisco Catalyst 3560-X Series, Руководство по настройке программного обеспечения

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring DHCP Features and IP Source Guard
Configuring IP Source Guard
Configuring IP Source Guard for Static Hosts on a Layer 2 Access Port
Note
You must configure the ip device tracking maximum limit-number interface configuration command
globally for IPSG for static hosts to work. If you only configure this command on a port without enabling
IP device tracking globally or by setting an IP device tracking maximum on that interface, IPSG with
static hosts rejects all the IP traffic from that interface. This requirement also applies to IPSG with static
hosts on a private VLAN host port.
Beginning in privileged EXEC mode:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2 ip device tracking Turn on the IP host table, and globally enable IP device
tracking.
Step 3 interface interface-id Enter interface configuration mode.
Step 4
switchport mode access Configure a port as access.
Step 5
switchport access vlan vlan-id Configure the VLAN for this port.
Step 6 ip verify source tracking port-security Enable IPSG for static hosts with MAC address filtering.
Note When you enable both IP source guard and port
security by using the
ip verify source
port-security interface configuration command:
• The DHCP server must support option 82, or
the client is not assigned an IP address.
•
The MAC address in the DHCP packet is not
learned as a secure address. The MAC address
of the DHCP client is learned as a secure
address only when the switch receives
non-DHCP data traffic.
Step 7 ip device tracking maximum number Establish a maximum limit for the number of static IPs
that the IP device tracking table allows on the port. The
range is 1to 10. The maximum number is 10.
Note
You must configure the ip device tracking
maximum limit-number interface configuration
command.
Step 8 switchport port-security (Optional) Activate port security for this port.
Step 9 switchport port-security maximum value (Optional) Establish a maximum of MAC addresses for
this port.
Step 10
end Return to privileged EXEC mode.