RE: QoS question

From: George Cassels (glcassels3@nc.rr.com)
Date: Fri May 06 2005 - 12:40:03 GMT-3


James it is because the max reserve by default is only 75%. You would
need to change this value if you wanted to use more then 75% of the
interface bandwidth in your policy. See link below for command
reference.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/
fqos_r/qrfcmd5.htm#wp1023531

Regards,
George

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
James Matrisciano
Sent: Friday, May 06, 2005 10:13 AM
To: ccielab@groupstudy.com
Subject: QoS question

When I build a CBWFQ policy....such as this:

class-map match-all qos1
  match access-group name qos1
 class-map match-all qos2
  match access-group name qos2
!
!
 policy-map qos
  class qos1
   bandwidth percent 15
  class qos2
   bandwidth percent 30
  class class-default
   bandwidth percent 45
!

Why do I get the following after applying it to a serial interface:

Router(config-if)#service-policy out qos
 I/f Serial0/0 class class-default requested bandwidth 45%, available
only 30%

Tought that it allotted for the over head....how much do I have to take
off the top, and to get those percentages, do I use a bandwidth (no
percentage) statement and what is the base line of bandwidth I start
subtracting from?

Router#sh int s0/0
Serial0/0 is up, line protocol is up
  Hardware is PowerQUICC Serial
  Internet address is 1.1.1.1/24
  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,

Look forward to any responses, thanks!

jm



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