Cisco Catalyst 2960-X User Manual

For inbound ACLs, after receiving a packet, the switch checks the packet against the ACL. If the ACL permits
the packet, the switch continues to process the packet. If the ACL rejects the packet, the switch discards the
packet.
For outbound ACLs, after receiving and routing a packet to a controlled interface, the switch checks the packet
against the ACL. If the ACL permits the packet, the switch sends the packet. If the ACL rejects the packet,
the switch discards the packet.
By default, the input interface sends ICMP Unreachable messages whenever a packet is discarded, regardless
of whether the packet was discarded because of an ACL on the input interface or because of an ACL on the
output interface. ICMP Unreachables are normally limited to no more than one every one-half second per
input interface, but this can be changed by using the ip icmp rate-limit unreachable global configuration
command.
When you apply an undefined ACL to an interface, the switch acts as if the ACL has not been applied to the
interface and permits all packets. Remember this behavior if you use undefined ACLs for network security.
Related Topics
Applying an IPv4 ACL to an Interface, on page 167
Restrictions for Configuring IPv4 Access Control Lists, on page 140
How to Configure ACLs
Configuring IPv4 ACLs
These are the steps to use IP ACLs on the switch:
SUMMARY STEPS
1.
Create an ACL by specifying an access list number or name and the access conditions.
2.
Apply the ACL to interfaces or terminal lines. You can also apply standard and extended IP ACLs to
VLAN maps.
DETAILED STEPS
PurposeCommand or Action
Create an ACL by specifying an access list number or name and the access conditions.
Step 1
Apply the ACL to interfaces or terminal lines. You can also apply standard and extended
IP ACLs to VLAN maps.
Step 2
Creating a Numbered Standard ACL
Follow these steps to create a numbered standard ACL:
Catalyst 2960-X Switch Security Configuration Guide, Cisco IOS Release 15.0(2)EX
154 OL-29048-01
Configuring IPv4 ACLs
How to Configure ACLs

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