JUNOSe 7.2.x Policy Management Configuration Guide
92 ! Two-Rate Rate-Limits
In color-blind mode, if the committed token bucket has enough tokens when a
packet is received, the packet is green and tokens are subtracted from both the
committed and the peak token buckets. If the peak bucket does not have enough
tokens left, it is allowed to go negative. Green packets are the committed traffic.
If the committed bucket does not have enough tokens for the packet, the peak
bucket is tested (and the committed bucket is not changed). If there are enough
tokens in the peak bucket, it is decremented and the packet is yellow. Yellow
packets are the conformed traffic. If the peak bucket does not have enough tokens
either (because the committed bucket did not have enough tokens), the packet is
red. Red packets are the exceeded traffic.
The two-rate rate-limit profile attributes are:
! ATM cell mode—ATM cell tax accounted for in statistics and rate calculations
! Color-aware—Color-aware rate action (only for hierarchical rate limits)
! Committed rate—Target rate for a packet flow
! Committed burst—Amount of bandwidth allocated to accommodate bursty
traffic in excess of the committed rate
! Peak rate—Amount of bandwidth allocated to accommodate excess traffic flow
over the committed rate
! Peak burst—Amount of bandwidth allocated to accommodate bursty traffic in
excess of the peak rate
! Committed action—Drop, transmit, conditional, unconditional, final, mark (IP
and IPv6), or mark-exp (MPLS) when traffic flow does not exceed the
committed rate; the mark value is not supported for hierarchical rate limits and
the transmit values conditional, unconditional, or final are only supported on
hierarchical rate limits
! Conformed action—Drop, transmit, mark (IP and IPv6), or mark-exp (MPLS)
when traffic flow exceeds the committed rate but remains below the peak rate;
the mark value is not supported for hierarchical rate limits and the transmit
values conditional, unconditional, or final are only supported on hierarchical
rate limits
! Exceeded action—Drop, transmit, mark (IP and IPv6), or mark-exp (MPLS)
when traffic flow exceeds the peak rate; the mark value is not supported for
hierarchical rate limits and the transmit values conditional, unconditional, or
final are only supported on hierarchical rate limits
! Mask value—Mask to be applied with mark values for the ToS byte; applicable
only to IP and IPv6 rate-limit profiles; not supported on hierarchical rate limits
! EXP mask value—Mask to be applied with mark-exp values; applicable only to
MPLS rate-limit profiles; not supported on hierarchical rate limits
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