EasyManuals Logo

Cisco Catalyst 2960-X Hardware Installation Guide

Cisco Catalyst 2960-X
102 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #74 background imageLoading...
Page #74 background image
Interface Settings
Verify that the interface is not disabled or powered off. If an interface is manually shut down on either side
of the link, it does not come up until you reenable the interface. Use the show interfaces privileged EXEC
command to see if the interface is error-disabled, disabled, or shutdown on either side of the connection. If
needed, reenable the interface.
Ping End Device
Ping from the directly connected switch first, and then work your way back port by port, interface by interface,
trunk by trunk, until you find the source of the connectivity issue. Make sure that each switch can identify
the end device MAC address in its Content-Addressable Memory (CAM) table.
Spanning Tree Loops
STP loops can cause serious performance issues that look like port or interface problems.
A unidirectional link can cause loops. It occurs when the traffic sent by the switch is received by its neighbor,
but the traffic from the neighbor is not received by the switch. A broken fiber-optic cable, other cabling
problems, or a port issue could cause this one-way communication.
You can enable UniDirectional Link Detection (UDLD) on the switch to help identify unidirectional link
problems.
Switch Performance
Speed, Duplex, and Autonegotiation
If the port statistics show a large amount of alignment errors, frame check sequence (FCS), or late-collisions
errors, this might mean a speed or duplex mismatch.
A common issue with speed and duplex occurs when duplex and speed settings are mismatched between two
switches, between a switch and a router, or between the switch and a workstation or server. Mismatches can
happen when manually setting the speed and duplex or from autonegotiation issues between the two devices.
To maximize switch performance and to ensure a link, follow one of these guidelines when changing the
duplex or the speed settings.
Let both ports autonegotiate both speed and duplex.
Manually set the speed and duplex parameters for the interfaces on both ends of the connection.
If a remote device does not autonegotiate, use the same duplex settings on the two ports. The speed
parameter adjusts itself even if the connected port does not autonegotiate.
Autonegotiation and Network Interface Cards
Problems sometimes occur between the switch and third-party network interface cards (NICs). By default,
the switch ports and interfaces autonegotiate. Laptops or other devices are commonly set to autonegotiate,
yet sometimes autonegotiation issues occur.
Catalyst 2960-X and 2960-XR Switch Hardware Installation Guide
64 OL-28309-02
Troubleshooting
Switch Performance

Table of Contents

Other manuals for Cisco Catalyst 2960-X

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Cisco Catalyst 2960-X and is the answer not in the manual?

Cisco Catalyst 2960-X Specifications

General IconGeneral
Console portRJ-45
USB 2.0 ports quantity2
SFP module slots quantity4
Installed SFP modules quantity-
Gigabit Ethernet (copper) ports quantity48
Basic switching RJ-45 Ethernet ports typeGigabit Ethernet (10/100/1000)
Power sourceAC
Input current5 A
AC input voltage100 - 240 V
Power consumption (typical)60.9 W
Number of power supply units1
Redundant power supply (RPS) supportYes
Operating altitude0 - 3000 m
Non-operating altitude0 - 4000 m
Storage temperature (T-T)-25 - 70 °C
Operating temperature (T-T)-5 - 40 °C
Operating relative humidity (H-H)10 - 95 %
Switching protocolsUDP, TCP, RADIUS/TACACS+
Number of VLANs1023
Networking standardsIEEE 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
Throughput107.1 Mpps
Jumbo frames9216
Number of queues8
MAC address table16000 entries
Number of static routes1000
DHCP featuresDHCP server
AuthenticationMAC-based authentication, Port-based authentication
Security algorithms802.1x RADIUS, SNMP, SSH
Access Control List (ACL) rules3
Switch typeManaged
Switch layerL2/L3
SafetyUL 60950-1, CAN/CSA-C22.2 No. 60950-1, EN 60950-1, IEC 60950-1, AS/NZS 60950-1
Form factor1U
Product colorBlack
Total Power over Ethernet (PoE) budget370 W
Power over Ethernet (PoE) ports quantity24
Power over Ethernet plus (PoE+) ports quantity12
Memory typeDRAM
Noise level39 dB
Flash memory128 MB
Internal memory512 MB
Processor frequency600 MHz
Mean time between failures (MTBF)276870 h
Weight and Dimensions IconWeight and Dimensions
Depth368 mm
Width445 mm
Height45 mm
Weight5800 g

Related product manuals