Corrugated boxes manufactured in the U.S. Must meet or exceed one of the two quality standards outlined in publications: the National Motor Freight Traffic Association’s National Motor Freight Classification (NMFC) and the National Railroad Freight Committee’s Uniform Freight Classification (UFC): Minimum Burst Strength or Edge Crush Test (ECT).

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Boxes must be made of combined board (corrugated or solid fiberboard) that meets or exceeds the minimum burst strength and combined basis weight as well as the minimum edge crush test listed in Table A per the appropriate gross weight and dimensions listed. Eco Box is committed to providing the highest quality product at the lowest possible price. We offer both burst strength tested and edge crush tested boxes in 180 different sizes. Most of our stock boxes are rated at 32 ECT and most of our picture/mirror boxes are rated at 200 lbs minimum burst strength. As shown in Table A, a single wall corrugated fiberboard box with a rating of 32 ECT is equivalent to a 200 burst strength box allowing a maximum content weight of 65 lbs. Minimum Burst Strength vs. Edge Crush Test.

In, the network administrator configures a large burst-size value for the shaping rate, then configures a small burst-size value. The larger burst size is subject to a maximum value.

Most Powerful Einsteinium EMC2 Mining Rig there. The smaller burst size is subject to a minimum value that enables the system to achieve the configured rates. In both configurations, the scheduler node can burst beyond its shaping rate for a brief interval. The burst of traffic beyond the shaping rate is more noticeable with the larger burst size than the smaller burst size. • • Guidelines for Configuring the Burst Size Typically, the default burst-size (100 ms) for both scheduler nodes and queues on MIC and MPC interfaces is adequate for most networks. However, if you have intermediate equipment in your network that has very limited buffering and is intolerant of bursts of traffic, you might want to configure a lower value for the burst size. Use caution when selecting a different burst size for your network. A burst size that is too high can overwhelm downstream networking equipment, causing dropped packets and inefficient network operation.

Similarly, a burst size that is too low can prevent the network from achieving your configured rate. When configuring a burst size, keep the following considerations in mind: • The system uses an algorithm to determine the actual burst size that is implemented for a node or queue.

For example, to reach a shaping rate of 8 Mbps, you must allocate 1Mb of rate credits every second. A shaping rate of 8 Mbps with a burst size of 500,000 bytes of rate-credit per seconds enables the system to transmit at most 500,000 bytes, or 4 Mbps. The system cannot implement a burst size that prevents the rate from being achieved. For more information, see. • There are minimum and maximum burst sizes for each platform, and different nodes and queue types have different scaling factors.

For example, the system ensures the burst cannot be set lower than 1 Mbps for a shaping rate of 8 Mbps. To smoothly shape traffic, rate credits are sent much faster than once per second.

The interval at which rate credits are sent varies depending on the platform, the type of rate, and the scheduler level. • When you have configured adjustments for the shaping rate (either by percentage or through an application such as ANCP or Multicast OIF), the system bases the default and minimum burst-size calculations on the adjusted shaping rate. • When you have configured cell shaping mode to account for ATM cell tax, the system bases the default and minimum burst-size calculations on the post-tax shaping rate. • The guaranteed rate and shaping rate share the value specified for the burst size. If the guaranteed rate has a burst size specified, that burst size is used for the shaping rate; if the shaping rate has a burst size specified, that bursts size is used for the guaranteed rate. If you have specified a burst size for both rates, the system uses the lesser of the two values. • The burst size configured for the guaranteed rate cannot exceed the burst-size configured for the shaping rate.

Starting in Junos OS Release 15.1, the CLI no longer generates a commit error when the guaranteed-rate burst size is statically configured to be more than the shaping-rate burst size. This behavior changed with the advent of enhanced subscriber management. The system logs an error when the guaranteed-burst rate is higher, whether the it is configured statically, dynamically with predefined variables, or by means of a change of authorization request. • If you have not configured a guaranteed rate, logical interfaces and interface sets receive a default guaranteed rate from the port speed.

Queues receive a default guaranteed rate from the parent or interface set. How the System Calculates the Burst Size When calculating the burst size, the system uses an exponent of a power of two.

For example: Shaping-rate in bps * 100 ms / (8 bits/byte * 1000 ms/s) = 1,875,000 bytes The system then rounds this value up. For example, the system uses the following calculation to determine the burst size for a scheduler node with a shaping rate of 150 Mbps: Max (Shaping rate, Guaranteed rate) bps * 100 ms / (8 bits/byte * 1000 ms/s) = 1,875,000 bytes Rounded up to the next higher power of two = 2,097,150 (which is 2**21, or 0x200000).