From: Jim Phillipo (jim.phillipo@guardent.com)
Date: Sat Jul 19 2003 - 16:16:09 GMT-3
How do you know whether to use bandwidth or bandwidth percent ?
-----Original Message-----
From: Jim Phillipo [mailto:jim.phillipo@guardent.com]
Sent: Saturday, July 19, 2003 3:08 PM
To: ccielab@groupstudy.com
Cc: 'brian@cyscoexpert.com'; 'Peter'
Subject: QOS CBWFQ to Custom Queuing (again)
I know this has been hashed to death but...... The answer they came
up with in the answer configs was confusing so I wanted to throw this out.
Here is the Scenario:
Assume link speed is 256kbps with the folliwing configuration convert it to
CBWFQ:
r8# show queuing interface serial 0
interface serial 0 queuing strategy: custom
Output queue utilisation(queue/count)
0/14 1/0 2/0 3/0 4/0 5/0 6/0 7/0 8/0
9//0 10/0 1/0 12/0 13/0 14/0 15/0 16/2
r8# show queuing custom
Current custom queuing configuration:
List Queue Args
1 16 default
1 1 protocol IP TCP WWW
1 2 protocol IP TCP FTP
1 3 protocol IP TCP Domain
1 4 protocol DLSW
1 5 protocol IP TCP Telnet
1 6 protocol IP TCP SMTP
1 1 byte-count 3000 limit 100
1 2 byte-count 7000 limit 100
1 3 byte-count 1000 limit 100
1 4 byte-count 6000 limit 100
1 5 byte-count 4000 limit 100
1 6 byte-count 4000 limit 100
1 16 byte-count 2000 limit 100
Here is ther answer:
I am at a loss as to how they came up with this, could we have used priority
or bandwidth ?
If you have the time could someone quickly go over the difference between
bandwith vs priority ?
!
!
!
class-map match-all telnet
match protocol telnet
class-map match-all dlsw
match protocol dlsw
class-map match-all smtp
match protocol smtp
class-map match-all ftp
match protocol ftp
class-map match-all www
match protocol http
class-map match-all dns
match protocol dns
!
!
policy-map cq2cbwfq
class dns
bandwidth 9
queue-limit 100
class dlsw
bandwidth 57
queue-limit 100
class telnet
bandwidth 38
queue-limit 100
class smtp
bandwidth 38
queue-limit 100
class www
bandwidth 28
queue-limit 100
class ftp
bandwidth 66
queue-limit 100
class class-default
bandwidth 19
queue-limit 100
!
Jim Phillipo, CCNP, CCDP
Sr. Internetworking Engineer
W: 401.456.1821 F: 401.456.0599 M: 508.982.8923
90 Royal Little Drive, Providence, RI 02904
www.guardent.com
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