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Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

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show interfaces

Displays information on a specific physical interface or virtual interface.

Syntax show interfaces interface
Parameters
interface Enter one of the following keywords and slot/port or number information:
  • For the management interface on the stack-unit, enter the keyword managementethernet followed by slot/port information. The slot and port range is 0.
  • For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port information.
  • For a VLAN interface, enter the keyword vlan followed by a number from 1 to 4094.
  • For a Port Channel interface, enter the keyword port-channel followed by a number. The range is from 1 to 128.
Command Modes
  • EXEC
  • EXEC Privilege
Supported Modes All Modes
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.4(0.0) Supported on the FN I/O Aggregator.
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 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
TenGigabitEthernet 0/0... Displays the interface’s type, slot/port, and administrative and line protocol status.
Hardware is... Displays the interface 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
    • underruns = number of packets with FIFO underrun conditions
  • 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 throttles and discards packets::
    • throttles = packets containing PAUSE frames
    • discarded = number of packets discarded without any processing
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).
Usage Information

The interface counter “over 1023-byte pkts” does not increment for packets in the range 9216 > x <1023.

The Management port is enabled by default ( no shutdown). If necessary, use the ip address command to assign an IP address to the Management port.

Example (ManagementEthernet)
Dell#show interface managementethernet ?
                                             0/0 Management Ethernet interface number
                                             Dell#show interface managementethernet 0/0
                                             ManagementEthernet 0/0 is up, line protocol is up
                                             Hardware is DellForce10Eth, address is 00:1e:c9:f1:00:05
                                             Current address is 00:1e:c9:f1:00:05
                                             Pluggable media not present
                                             Interface index is 235159752
                                             Internet address is 10.11.209.87/16
                                             Mode of IP Address Assignment : MANUAL
                                             DHCP Client-ID: mgmt001ec9f10005
                                             Virtual-IP is not set
                                             Virtual-IP IPv6 address is not set
                                             MTU 1554 bytes, IP MTU 1500 bytes
                                             LineSpeed 100 Mbit, Mode full duplex
                                             ARP type: ARPA, ARP Timeout 04:00:00
                                             Last clearing of "show interface" counters 5d4h57m
                                             Queueing strategy: fifo
                                             Input 3448753 packets, 950008323 bytes, 3442163 multicast
                                             Received 0 errors, 0 discarded
                                             Output 4627 packets, 814226 bytes, 0 multicast
                                             Output 0 errors, 0 invalid protocol
                                          
Related Commands

show interfaces configured — Displays any interface with a non-default configuration.

show interfaces port-channel — Displays information on all interfaces on a specific stack unit.

show interfaces switchport — Displays Layer 2 information about the interfaces.

show inventory — Displays the I/O Aggregator type, components (including media), Dell Networking OS version including hardware identification numbers and configured protocols.

show ip interface — Displays Layer 3 information about the interfaces.

show memory — Displays the stack unit(s) status.

show interfaces status — Displays all interfaces configured using the interface range command.


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