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[altq 440] Re: RSVP with Queueing Question
Takashi Ikebe wrote:
> I have question. please help me!
> When reserve bandwidth with RESV signal, and in the case data packet doesn`t
> rearch yet,
> does empty packet send or another connection`s packet send?
> I mean that generally(CBQ, WFQ) does another connection can use reserved
> bandwidth if reserved bandwidth doesn`t used?
Depends on the queueing discipline and how it is configured.
A work conserving queueing discipline (e.g., WFQ) transmits packet as
long as there are backlogged packets. So, unused reserved bandwidth
is used by other traffic.
On the other hand, a non-work conserving queueing discipline (e.g.,
CBQ) can be configured not to redistribute excess bandwidth.
> In case of WFQ, when connection created, then create new queue, and send
> packet by round-robin.
> So I wonder, if there is no packet in the queue, how WFQ works? send empty
> packet? or skip to next queue??
It just skips empty queues.