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 49 lists the related show interfaces atm command output fields.

Table 49: 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.

Related Documentation