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show pfe statistics dma

 

List of Syntax

Syntax

Syntax (TX Matrix and TX Matrix Plus Routers)

Syntax

Syntax (TX Matrix and TX Matrix Plus Routers)

Release Information

Command introduced before Junos OS Release 7.4.

Description

Display Packet Forwarding Engine direct memory access (DMA) statistics.

Options

noneDisplay all Packet Forwarding Engine direct memory access statistics.
fpc slot(TX Matrix and TX Matrix Plus routers only) (Optional) Display statistics for a Flexible PIC Concentrator (FPC) slot.
  • On a TX Matrix router, if you specify the number of a T640 router by using the lcc number option (the recommended method), replace slot with a value from 0 through 7. Otherwise, replace slot with a value from 0 through 31.

  • On a TX Matrix Plus router, if you specify the number of a T1600 router by using the lcc number option (the recommended method), replace slot with a value from 0 through 7. Otherwise, replace slot with a value from 0 through 31

  • On a TX Matrix Plus router in the TXP-T1600-3D, TXP-T4000-3D, or TXP-Mixed-LCC-3D configuration, if you specify the number of a T1600 or T4000 router by using the lcc number option (the recommended method), replace slot with a value from 0 through 7. Otherwise, replace slot with a value from 0 through 63.

For example, the following commands have the same result:

lcc number(TX Matrix and TX Matrix Plus routers only) (Optional) On a TX Matrix router, display statistics for a specific T640 router (or line-card chassis) that is connected to a TX Matrix router. On a TX Matrix Plus router, display statistics for a specific router (or line-card chassis) that is connected to a TX Matrix router.

Replace number with the following values depending on the LCC configuration:

  • 0 through 3, when T640 routers are connected to a TX Matrix router in a routing matrix.

  • 0 through 3, when T1600 routers are connected to a TX Matrix Plus router in a routing matrix.

  • 0 through 7, when T1600 routers are connected to a TX Matrix Plus router with 3D SIBs in a routing matrix.

  • 0, 2, 4, or 6, when T4000 routers are connected to a TX Matrix Plus router with 3D SIBs in a routing matrix.

Required Privilege Level

admin

List of Sample Output

show pfe statistics dma

show pfe statistics dma lcc

Output Fields

Table 1 lists the output fields for the show pfe ssb command. Output fields are listed in the approximate order in which they appear.

Table 1: show pfe statistics dma Output Fields

Field Name

Field Description

DMA Statistics

Information about Packet Forwarding Engine direct memory access statistics:

  • Name—DMA statistics entry name.

    • Requests—Number of requests.

    • Completed—Number of completed requests.

    • Failed—Number of failed requests.

    • Packet Read—DMA packet read statistics.

    • Packet Write—DMA physical read statistics.

    • Physical Write—DMA physical write statistics.

DMA Errors

Information about Packet Forwarding Engine direct memory access error statistics:

  • Name—DMA error statistics entry name.

    • Write 0—Write 0 statistics.

      Completed—Number of completed requests.

    • Write 1—Write 1 statistics.

    • Read 0—Read 0 statistics.

    • Read 1—Read 1 statistics.

    • Illegal Bank—DMA error statistics due to illegal bank.

    • Address Range—DMA error statistics due to address range.

    • ECC Error—DMA error statistics due to ECC errors.

    • PCI Retries—DMA error statistics due to PCI retries.

    • PCI Error—DMA error statistics due to PCI error.

DMA Requests

Information about Packet Forwarding Engine direct memory access requests:

  • Requests available—DMA statistics of requests available.

  • Requests used—DMA statistics of requests used.

Sample Output

show pfe statistics dma

user@host> show pfe statistics dma

show pfe statistics dma lcc

user@host> show pfe statistics dma lcc 2