Class Definition

A class definition contains the parameters for the class, including the filters that cause packets to be placed in this class.

Format

class   name
        parent             parent_class
        interface          interface
        bandwidth          bandwidth
        max_bandwidth      max_bandwidth
        priority           priority
        bandwidth_bps      bandwidth_bps
        max_bandwidth_bps  max_bandwidth_bps
        tos_mark           tos_mark
        tos_mark_mask      tos_mark_mask
        flow_events        flow_events
        filter             filter

• name is the name of the class. This must be unique for the specified interface. If you want this class to act as the default class, its name must be default.

• parent_class is the name of the class above this class in the hierarchy.

• interface is the name of the interface used by traffic in this class.

• bandwidth is the percentage of the bandwidth of the interface that is allocated to the class. Use either this parameter or bandwidth_bps.

• max_bandwidth is the maximum percentage of bandwidth this class can use, including bandwidth borrowed from its parent class. Use either this parameter or max_bandwidth_bps.

• priority is the priority of the class. Specify an integer from 1 (highest priority) to 7 (lowest priority).

• bandwidth_bps is the absolute bandwidth in bits per second that is allocated to the class. Use either this parameter, or bandwidth.

• max_bandwidth_bps is the absolute maximum bandwidth in bits per second that this class can use, including bandwidth borrowed from its parent class. Use either this parameter, or max_bandwidth.

• tos_mark is the Type of Service specified as a value between 0-255. It overwrites the existing value in classified packets in this class. Refer to "Type of Service Values" for further information.

• tos_mark_mask is a bit mask that specifies which Type of Service bits in the IP header are modified with the tos_mark. Refer to "Type of Service Values" for further information.

• flow_events indicates that "flow added" events are generated when a new flow is detected in the class. There are no semantics associated with the value of this keyword. To disable flow added events, remove this line from the file.

• filter is the name of a filter that allocates packets to this class. You can specify more than one filter, in a comma-separated list.

Example

class   test_class
        parent             root
        interface          qe0_out
        bandwidth          35
        max_bandwidth      45
        priority           3
        tos_mark           0x07
        tos_mark_mask      0x0F
        flow_events        ip_source
        filter             filter1,filter2