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    Monitoring the QoS Configuration of ATM Interfaces

    Purpose

    Display ATM port queuing mode and QoS shaping mode status for a specific ATM interface.

    Action

    To display the QoS configuration on an ATM interface:

    host1# show interfaces atm 2/0
    ATM Interface 2/0 is up, line protocol is disabled
    AAL5 operational status:       up
          time since last status change: 01:08:32
    ATM operational status:        up
          time since last status change: 01:08:32
    .
    .
    .....
    InPackets:        0
    InBytes:          0
    InCells:          0
    OutPackets:       7803262
    OutBytes:         7803262000
    OutCells:         163868502
    InErrors:         0
    OutErrors:        0
    InPacketDiscards: 0
    InByteDiscards:   0
    InCellErrors:     0
    Administrative qos-shaping-mode: frame
    Operational qos-shaping-mode: frame
    Administrative qos-mode-port: none
    Operational qos-mode-port: none
    Attached QoS profile: shaping
    

    Meaning

    Table 1 lists the related show interfaces atm command output fields.

    Table 1: show interfaces atm Output Fields

    Field Name

    Field Description

    Administrative qos-mode-port

    Per-port queuing mode status: disabled, low-latency, low-cdv, none

    Operational qos-mode-port

    Per-port queuing mode status: disabled, low-latency, low-cdv, none

    Administrative qos-shaping-mode

    Configured shaping mode for the interface:

    • disabled—Shaping mode is configured but disabled.
    • frame—Default shaping mode for shaping and policing rates. Reports statistics such as transmitted bytes and dropped bytes based on bytes within frames.
    • cell—Shaping mode for shaping and policing rates is cell-based; resulting traffic stream conforms exactly to the policing rates configured in downstream devices. Reports statistics in bytes within cells and also accounts for cell encapsulation and padding overhead.
    • none—Shaping mode is not configured.

    Operational qos-shaping-mode

    Actual shaping mode for the interface. The router determines the operational shaping mode based on the values configured for the qos-shaping-mode command or the qos-port-mode command. For more information, see Per-Packet Queuing on the SAR Scheduler Overview.

    • disabled—Shaping mode is configured but disabled.
    • frame—Default shaping mode for shaping and policing rates. Reports statistics such as transmitted bytes and dropped bytes based on bytes within frames.
    • cell—Shaping mode for shaping and policing rates is cell-based; resulting traffic stream conforms exactly to the policing rates configured in downstream devices. Reports statistics in bytes within cells and also accounts for cell encapsulation and padding overhead.
    • none—Shaping mode is not configured.

    Attached QoS profile

    QoS profile attachment at or below the displayed interface. For example, if the interface being displayed is a VC, and the attachment is at the ATM AAL5 interface, the ATM AAL5 interface attachment is displayed.

    Published: 2014-08-11