Cisco Catalyst 2950 Command Reference

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
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Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
show interfaces counters
This is an example of output from the show interfaces counters errors command. It displays the
interface error counters for all interfaces. Table 2-25 describes the fields in the output.
Switch# show interfaces counters errors
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
Gi0/1 0 0 0 0 0
Gi0/2 0 0 0 0 0
Port Single-Col Multi-Col Late-Col Excess-Col Carri-Sen Runts Giants
Gi0/1 0 0 0 0 0 0 0
Gi0/2 0 0 0 0 0 0 0
Table 2-24 show interfaces counters Field Descriptions
Field Description
InOctets Displays the number of bytes received on an interface.
InUcastPkts Displays the number of unicast packets received on an interface.
InMcastPkts Displays the number of multicast packets received on an interface.
InBcastPkts Displays the number of broadcast packets received on the interface.
OutOctets Displays the number of bytes sent on an interface.
OutUcastPkts Displays the number of unicast packets sent on an interface.
OutMcastPkts Displays the number of multicast packets sent on an interface.
OutBcastPkts Displays the number of broadcast packets sent on an interface.
Table 2-25 show interfaces counters errors Field Descriptions
Field Description
Align-Err Displays the total number of frames that are received on an interface and have
alignment errors.
FCS-Err Displays the total number of frames that are received on an interface, have a
valid length (in bytes), but do not have the correct FCS
1
values.
Xmit-Err Displays the total number of frames that have errors during transmission.
Rcv-Err Displays the total number of frames that are received on an interface and have
errors.
Undersize Displays the total number of frames received that are less than 64 bytes
(including the FCS bits and excluding the frame header) and have either an FCS
or an alignment error.
Single-col Displays the total number of frames that are successfully sent on an interface
after one collision occurs.
Multi-col Displays the total number of frames that are successfully sent on an interface
after more than one collision occurs.
Late-col After a frame is sent, displays the number of times that a collision is detected
on an interface after 512 bit times.
Excess-col Display the number of frames that could not be sent on an interface because
more than 16 collisions occurs.

Cisco Catalyst 2950 Specifications

General

Forwarding Bandwidth	8.8 Gbps
Switching Capacity	13.6 Gbps
Forwarding Rate	6.6 Mpps
Weight	3.6 kg
RAM	16 MB
Flash Memory	8 MB
Operating Humidity	10% to 85% non-condensing
Uplink Ports	2 x 10/100/1000Base-T
Dimensions	4.4 cm x 44.5 cm x 24.2 cm
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Quality of Service (QoS), VLAN support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p
Status Indicators	system
Operating Temperature	0 to 45°C
Ports	24 x 10/100 Ethernet ports
MAC Address Table Size	8, 192 entries
Power Supply	Internal 100-240V AC, 50-60Hz