White Papers

Line Description
Energy Efficient
Ethernet
Displays whether Energy Efficient Ethernet has been enabled or not.
ARP type:... Displays the ARP type and the ARP timeout value for the interface.
Last clearing... Displays the time when the show interfaces counters where cleared.
Queuing
strategy...
States the packet queuing strategy. FIFO means first in first out.
Input Statistics: Displays all the input statistics including:
● Number of packets and bytes into the interface
● Number of packets with VLAN tagged headers
● Packet size and the number of those packets inbound to the interface
● Number of Multicast and Broadcast packets:
○ Multicasts = number of MAC multicast packets
○ Broadcasts = number of MAC broadcast packets
● Number of runts, giants, and throttles packets:
○ runts = number of packets that are less than 64B
○ giants = packets that are greater than the MTU size
○
throttles = packets containing PAUSE frames
● Number of CRC, overrun, and discarded packets:
○ CRC = packets with CRC/FCS errors
○ overrun = number of packets discarded due to FIFO overrun conditions
○ discarded = the sum of runts, giants, CRC, and overrun packets discarded
without any processing
● Number of FEC bit errors and uncorrected code words:
○ FEC bit errors = Number of Forward Error Correction Bit errors occurred.
○ FEC uncorrected code words = Number of uncorrected Forward Error
Correction packets.
Output
Statistics:
Displays output statistics sent out of the interface including:
● Number of packets, bytes, and underruns out of the interface
● Packet size and the number of the packets outbound to the interface
● Number of Multicast, Broadcast, and Unicast packets:
○ Multicasts = number of MAC multicast packets
○ Broadcasts = number of MAC broadcast packets
○ Unicasts = number of MAC unicast packets
● Number of VLANs, throttles, discards, and collisions:
○ Vlans = number of VLAN tagged packets
○ throttles = packets containing PAUSE frames
○
discarded = number of packets discarded without any processing
○ collisions = number of packet collisions
○ wred=count both packets discarded in the MAC and in the hardware-based
queues
Rate
information...
Estimate of the input and output traffic rate over a designated interval (30 to 299
seconds). Traffic rate is displayed in bits, packets per second, and percent of line
rate.
Time since... Elapsed time since the last interface status change (hh:mm:ss format).
Example
DellEMC#show interfaces
twentyFiveGigE 1/1 is down, line protocol is down
Hardware is DellEMCEth, address is 34:17:eb:2c:8c:82
Current address is 34:17:eb:2c:8c:82
Pluggable media not present
Forward Error Correction(FEC) configured is default
FEC status is OFF
OUI is 0x6a737d
Interfaces 697