Administrator Guide

Usage
Information
Use this show interfaces command for details on a specific interface. Use the show interfaces
stack-unit command for details on all interfaces on the designated stack unit.
On the M I/O Aggregator, the show interface output displays incorrect rate information details over time
for link monitoring when the rate-interval is configured for 5 seconds. Dell Networking recommends using
higher rate-intervals such as 15 to 299 seconds to minimize the errors seen.
NOTE: In the CLI output, the power value will be rounded to a 3-digit value. For receive/transmit
power that is less than 0.000, an snmp query will return the corresponding dbm value even though
the CLI displays as 0.000.
NOTE: After the counters are cleared, the line-rate continues to increase until it reaches the
maximum line rate. When the maximum line rate is reached, there will be no change in the line-rate.
User Information
The following describes the show interfaces command shown in the 10G example below.
Line Description
TenGigabitEther
net 2/0...
Displays the interface’s type, slot/port, and administrative and line protocol status.
Hardware is... Displays the interface’s hardware information and its assigned MAC address.
Interface index... Displays the interface index number used by SNMP to identify the interface.
Internet
address...
States whether an IP address is assigned to the interface. If an IP address is
assigned, that address is displayed.
MTU 1554... Displays link and IP MTU information. If the chassis is in Jumbo mode, this number
can range from 576 to 12000.
LineSpeed Displays the interface’s line speed.
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 IP headers and VLAN tagged headers.
NOTE: The sum of the number of packets may not be as expected since a
VLAN tagged IP packet counts as both a VLAN packet and an IP packet.
● Packet size and the number of those packets inbound to the interface
● Number of symbol errors, runts, giants, and throttles packets:
○ symbol errors = number packets containing bad data. That is, the port MAC
detected a physical coding error in the packet.
○
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, IP Checksum, overrun, and discarded packets:
○ CRC = packets with CRC/FCS errors
○ IP Checksum = packets with IP Checksum errors
○ overrun = number of packets discarded due to FIFO overrun conditions
○ discarded = the sum of runts, giants, CRC, IP Checksum, and overrun
packets discarded without any processing
Output
Statistics:
Displays output statistics sent out of the interface including:
● Number of packets, bytes, and underruns out of the interface
○ packets = total number of packets
○ bytes = total number of bytes
Interfaces 183