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    Maximum Delay Buffer with q-pic-large-buffer Statement Enabled

    Table 1 lists the maximum delay buffer that can be configured for T1, E1, and DS0 interfaces configured on Channelized IQ PICs:

    Table 1: Maximum Delay Buffer with q-pic-large-buffer Statement Enabled

    Platform, PIC, or Interface Type

    Maximum Buffer Size

    With Large Buffer Sizes Not Enabled

    T Series and M320 routers

    50,000 microseconds

    Other M Series routers

    200,000 microseconds

    IQ PICs on all routers

    100,000 microseconds

    Channelized T1/E1 interface on J Series Services Routers

    400,000 microseconds

    With Large Buffer Sizes Enabled

    Channelized T3 and channelized OC3 DLCIs—Maximum sizes vary by shaping rate:

    With shaping rate from 64,000 through 255,999 bps

    4,000,000 microseconds

    With shaping rate from 256,000 through 511,999 bps

    2,000,000 microseconds

    With shaping rate from 512,000 through 1,023,999 bps

    1,000,000 microseconds

    With shaping rate from 1,024,000 through 2,048,000 bps

    500,000 microseconds

    With shaping rate from
    2,048,001 bps through 10 Mbps

    400,000 microseconds

    With shaping rate from
    10,000,001 bps through 20 Mbps

    300,000 microseconds

    With shaping rate from
    20,000,001 bps through 30 Mbps

    200,000 microseconds

    With shaping rate from
    30,000,001 bps through 40 Mbps

    150,000 microseconds

    With shaping rate up to 40,000,001 bps or higher

    100,000 microseconds

    NxDS0 IQ Interfaces—Maximum sizes vary by channel size:

    1xDSO through 3xDS0

    4,000,000 microseconds

    4xDSO through 7xDS0

    2,000,000 microseconds

    8xDSO through 15xDS0

    1,000,000 microseconds

    16xDSO through 32xDS0

    500,000 microseconds

    Other IQ interfaces

    500,000 microseconds

    Published: 2013-01-24