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Glossary

Portable Libraries

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.

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