RE: LLQ Doubt

(is this what you were looking for Divya?)

Q. If a class in Class Based Weighted Fair Queueing (CBWFQ) is not using its
bandwidth, can other classes use the bandwidth?

A. Yes. Although the bandwidth guarantees provided by issuing the bandwidth
and priority commands have been described with words like "reserved" and
"bandwidth to be set aside", neither command implements a true reservation.
Meaning, if a traffic class is not using its configured bandwidth, any
unused bandwidth is shared among the other classes.

The queueing system imposes an important exception to this rule with a
priority class. As noted above, the offered load of a priority class is
metered by a traffic policer. During congestion conditions, a priority class
cannot use any excess bandwidth. For more information, refer to Comparing
the bandwidth and priority Commands of a QoS Service Policy.

http://www.cisco.com/en/US/tech/tk543/tk545/technologies_q_and_a_item09186a0
0800cdfab.shtml

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Gaurav Thukral
Sent: Friday, February 24, 2012 10:01 AM
To: Marko Milivojevic; Antonio Soares; Group study; Tyson Scott;
groupstudy_at_cconlinelabs.com
Subject: Fwd: LLQ Doubt

Hi Experts

Kindly put some shadow on this.

We have three types of queues (A,B and C) Out of which A is LLQ.

My query is if we have no traffic in LLQ then that BW ( LLQ BW) can be
shared by another two queues.

Hoping for quick reply.

Regards
Divya

--
Thanks & Regards,
Gaurav Thukral
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