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There are ways to combine the resource buffers. For example, on the Infinet devices, the allocated resource buffers can be combined using classes (see below). If one resource buffer is full (video 6), its resources can be provided to another buffer.
In the example below, the buffer for vlan 162 traffic is full, it allows allowing to fill in the vlan's 161 traffic buffer with 5 selected data units, instead of 3 (its own 3 data units plus the 2 data units of the other buffer). In this case, the vlan 161 service throughput will increase. But when vlan 162 traffic resource buffer will have free space, resource allocation will return to normal mode: for vlan 161 traffic - 3 data units, for vlan 162 traffic - 2 data units.
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