Buffer utilization display

The following table describes the buffer utilization differences between the 7250 IXR, 7220 IXR-D2, D3, and D5 or 7220 IXR-H2 and H3.

Table 1. Buffer utilization

Hardware

Buffer memory

7250 IXR

  • SRAM size = 32MB

  • DRAM (HBM) size = 8 GB

7220 IXR-D2 and D3

  • Total Buffer size = 32MB

  • Reserved Buffer size = 4.65MB

7220 IXR-D5

  • Total Buffer size = 132MB

  • Reserved Buffer size = 3.7MB

7220 IXR-H2 and H3

  • Total Buffer size = 64MB

  • Reserved Buffer size = 6.7MB

Displaying buffer utilization

The following examples show overall buffer usage. The output varies depending on the hardware deployed.

Displaying buffer utilization (7250 IXR)

# info from state platform linecard 1 forwarding-complex 0 buffer-memory
    platform {
        linecard 1 {
            forwarding-complex 0 {
                buffer-memory {
                    sram {
                        used 15808512 >> in bytes 
                        free 17745920  >> in bytes
                    }
                    dram {
                        used 48   >>> it is in % of DRAM
                    }
                }
            }
        }
    }

Displaying buffer utilization (7220 IXR-D2, D3, and D5 or 7220 IXR-H2 and H3 )

# info from state platform linecard 1 forwarding-complex 0 buffer-memory
    platform {
        linecard 1 {
            forwarding-complex 0 {
                buffer-memory {
                   used  2097152
                   free  27263246
                   reserved 4194034
                }
            }
        }
    }