Cisco Catalyst 2960-X User Manual

PurposeCommand or Action
Specifies the interface connected to the other switch, and enter
interface configuration mode.
Interfaceinterface-id
Example:
Switch(config)# interface
gigabitethernet1/0/1
Step 5
Configures the connection between the switches as trusted. By
default, all interfaces are untrusted.
ip arp inspection trust
Example:
Switch(config-if)#ip arp inspection trust
Step 6
The switch does not check ARP packets that it receives from the
other switch on the trusted interface. It simply forwards the packets.
For untrusted interfaces, the switch intercepts all ARP requests and
responses. It verifies that the intercepted packets have valid
IP-to-MAC address bindings before updating the local cache and
before forwarding the packet to the appropriate destination. The
switch drops invalid packets and logs them in the log buffer
according to the logging configuration specified with the ip arp
inspection vlan logging global configuration command.
Returns to privileged EXEC mode.end
Example:
Switch(config-if)#end
Step 7
Verifies the dynamic ARP inspection configuration on interfaces.show ip arp inspection interfaces
Example:
Step 8
Verifies the dynamic ARP inspection configuration on VLAN.
show ip arp inspection vlan vlan-range
Example:
Switch(config-if)#show ip arp inspection
vlan 1
Step 9
Verifies the DHCP bindings.show ip dhcp snooping binding
Example:
Switch(config-if)#show ip dhcp snooping
binding
Step 10
Checks the dynamic ARP inspection statistics on VLAN.show ip arp inspection statistics vlan
vlan-range
Step 11
Example:
Switch(config-if)#show ip arp inspection
statistics vlan 1
Enters the global configuration mode.configure terminal
Example:
Switch# configure terminal
Step 12
Catalyst 2960-X Switch Security Configuration Guide, Cisco IOS Release 15.0(2)EX
254 OL-29048-01
Configuring Dynamic ARP Inspection
Configuring Dynamic ARP Inspection in DHCP Environments

Cisco Catalyst 2960-X Specifications

General

Console port	RJ-45
USB 2.0 ports quantity	2
SFP module slots quantity	4
Installed SFP modules quantity	-
Gigabit Ethernet (copper) ports quantity	48
Basic switching RJ-45 Ethernet ports type	Gigabit Ethernet (10/100/1000)
Power source	AC
Input current	5 A
AC input voltage	100 - 240 V
Power consumption (typical)	60.9 W
Number of power supply units	1
Redundant power supply (RPS) support	Yes
Operating altitude	0 - 3000 m
Non-operating altitude	0 - 4000 m
Storage temperature (T-T)	-25 - 70 °C
Operating temperature (T-T)	-5 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Switching protocols	UDP, TCP, RADIUS/TACACS+
Number of VLANs	1023
Networking standards	IEEE 802.1ab, IEEE 802.1D, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3ae, IEEE 802.3af, IEEE 802.3ah, IEEE 802.3at, IEEE 802.3az, IEEE 802.3u, IEEE 802.3x, IEEE 802.3z
Throughput	107.1 Mpps
Jumbo frames	9216
Number of queues	8
MAC address table	16000 entries
Number of static routes	1000
DHCP features	DHCP server
Authentication	MAC-based authentication, Port-based authentication
Security algorithms	802.1x RADIUS, SNMP, SSH
Access Control List (ACL) rules	3
Switch type	Managed
Switch layer	L2/L3
Safety	UL 60950-1, CAN/CSA-C22.2 No. 60950-1, EN 60950-1, IEC 60950-1, AS/NZS 60950-1
Form factor	1U
Product color	Black
Total Power over Ethernet (PoE) budget	370 W
Power over Ethernet (PoE) ports quantity	24
Power over Ethernet plus (PoE+) ports quantity	12
Memory type	DRAM
Noise level	39 dB
Flash memory	128 MB
Internal memory	512 MB
Processor frequency	600 MHz
Mean time between failures (MTBF)	276870 h

Weight and Dimensions

Depth	368 mm
Width	445 mm
Height	45 mm
Weight	5800 g