Cisco Catalyst 2960-X User Manual

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Transmission Control Protocol (tcp)
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User Datagram Protocol (udp)
Named IPv4 ACLs
You can identify IPv4 ACLs with an alphanumeric string (a name) rather than a number. You can use named
ACLs to configure more IPv4 access lists in a router than if you were to use numbered access lists. If you
identify your access list with a name rather than a number, the mode and command syntax are slightly different.
However, not all commands that use IP access lists accept a named access list.
The name you give to a standard or extended ACL can also be a number in the supported range of access
list numbers. That is, the name of a standard IP ACL can be 1 to 99 and . The advantage of using named
ACLs instead of numbered lists is that you can delete individual entries from a named list.
Note
Consider these guidelines before configuring named ACLs:
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Numbered ACLs are also available.
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A standard ACL and an extended ACL cannot have the same name.
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You can use standard or extended ACLs (named or numbered) in VLAN maps.
ACL Logging
The switch software can provide logging messages about packets permitted or denied by a standard IP access
list. That is, any packet that matches the ACL causes an informational logging message about the packet to
be sent to the console. The level of messages logged to the console is controlled by the logging console
commands controlling the syslog messages.
Because routing is done in hardware and logging is done in software, if a large number of packets match
a permit or deny ACE containing a log keyword, the software might not be able to match the hardware
processing rate, and not all packets will be logged.
Note
The first packet that triggers the ACL causes a logging message right away, and subsequent packets are
collected over 5-minute intervals before they appear or logged. The logging message includes the access list
number, whether the packet was permitted or denied, the source IP address of the packet, and the number of
packets from that source permitted or denied in the prior 5-minute interval.
The logging facility might drop some logging message packets if there are too many to be handled or if
there is more than one logging message to be handled in 1 second. This behavior prevents the router from
crashing due to too many logging packets. Therefore, the logging facility should not be used as a billing
tool or an accurate source of the number of matches to an access list.
Note
Catalyst 2960-X Switch Security Configuration Guide, Cisco IOS Release 15.0(2)EX
150 OL-29048-01
Configuring IPv4 ACLs
Standard and Extended IPv4 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