Cisco Catalyst 2960-X User Manual

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IPv4 ARPs: Hosts receive ARP packets from other subnets. This is a problem if two subnets in different
Virtual Routing and Forwarding (VRF) tables with overlapping IP address range are active on the port.
The host ARP cache may get invalid entries.
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IPv6 control packets: In IPv6 deployments, Router Advertisements (RA) are processed by hosts that
are not supposed to receive them. When a host from one VLAN receives RA from a different VLAN,
the host assign incorrect IPv6 address to itself. Such a host is unable to get access to the network.
The workaround is to enable the IPv6 first hop security so that the broadcast ICMPv6 packets are
converted to unicast and sent out from multi-auth enabled ports.. The packet is replicated for each client
in multi-auth port belonging to the VLAN and the destination MAC is set to an individual client. Ports
having one VLAN, ICMPv6 packets broadcast normally.
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IP multicast: Multicast traffic destined to a multicast group gets replicated for different VLANs if the
hosts on those VLANs join the multicast group. When two hosts in different VLANs join a multicast
group (on the same mutli-auth port), two copies of each multicast packet are sent out from that port.
MAC Move
When a MAC address is authenticated on one switch port, that address is not allowed on another authentication
manager-enabled port of the switch. If the switch detects that same MAC address on another authentication
manager-enabled port, the address is not allowed.
There are situations where a MAC address might need to move from one port to another on the same switch.
For example, when there is another device (for example a hub or an IP phone) between an authenticated host
and a switch port, you might want to disconnect the host from the device and connect it directly to another
port on the same switch.
You can globally enable MAC move so the device is reauthenticated on the new port. When a host moves to
a second port, the session on the first port is deleted, and the host is reauthenticated on the new port. MAC
move is supported on all host modes. (The authenticated host can move to any port on the switch, no matter
which host mode is enabled on the that port.) When a MAC address moves from one port to another, the
switch terminates the authenticated session on the original port and initiates a new authentication sequence
on the new port. The MAC move feature applies to both voice and data hosts.
In open authentication mode, a MAC address is immediately moved from the original port to the new
port, with no requirement for authorization on the new port.
Note
MAC Replace
The MAC replace feature can be configured to address the violation that occurs when a host attempts to
connect to a port where another host was previously authenticated.
This feature does not apply to ports in multi-auth mode, because violations are not triggered in that mode.
It does not apply to ports in multiple host mode, because in that mode, only the first host requires
authentication.
Note
Catalyst 2960-X Switch Security Configuration Guide, Cisco IOS Release 15.0(2)EX
OL-29048-01 275
Configuring IEEE 802.1x Port-Based Authentication
MAC Move

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