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Guidelines for Configuring CoS Traffic Shaping Attributes for Dynamic Interface Sets and Member Subscriber Sessions

Observe the following guidelines when you apply dynamic CoS traffic-shaping attributes to a dynamic interface set or a dynamic ACI interface set and its member subscriber sessions. For complete information about the Junos OS CoS traffic-shaping predefined dynamic variables and RADIUS tag values used with this feature, see CoS Traffic Shaping Predefined Variables for Dynamic Interface Sets.

  • This feature is supported only for dynamically configured and instantiated subscriber interfaces.

  • Do not configure a combination of $junos-cos-parameter predefined dynamic variables with RADIUS tag values in the 100s range and $junos-cos-parameter predefined dynamic variables with tag values not in the 100s range in the same traffic-control profile. If you do so, the subscriber authentication process fails.

  • Use the $junos-cos-adjust-minimum predefined variable (tag 109) only in traffic-control profiles for dynamic subscriber interfaces. Using this variable in a traffic-control profile for a dynamic interface set or dynamic ACI interface set has no effect.

  • Do not configure the $junos-cos-excess-rate-high predefined variable (tag 110) when the $junos-cos-excess-rate predefined variable (tag 105) is configured, and vice-versa.

  • Do not configure the $junos-cos-excess-rate-low predefined variable (tag 111) when the $junos-cos-excess-rate predefined variable (tag 105) is configured, and vice-versa.

  • Do not configure the $junos-cos-byte-adjust-frame predefined variable (tag 114) when the $junos-cos-byte-adjust predefined variable (tag 108) is configured, and vice-versa.

  • Do not configure the $junos-cos-byte-adjust-cell predefined variable (tag 115) when the $junos-cos-byte-adjust predefined variable (tag 108) is configured, and vice-versa.

  • Use the per-priority $junos-cos-shaping-rate-parameter predefined variables (tags 116 through 125) only in traffic-control profiles for dynamic interface sets or dynamic ACI interface sets. Using these variables in traffic-control profiles for a dynamic logical subscriber interface causes the subscriber session to fail.

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