CBWFQ/WRED for ATM PVC/SVC

From: Mustafa Bayramov (ICT/IT) (mustafa@azercell.com)
Date: Mon Jul 21 2003 - 13:42:00 GMT-3


Hello folks

 I have read on doc CD that I couldn't use CBWFQ on PVC that configured as
UBR or UBR+.
 Does it apply to all IOS 12.1.x version ?

"
Attaching a Service Policy and Enabling CBWFQ for a VC
Because CBWFQ gives you minimum bandwidth guarantee, you can only apply
CBWFQ to VCs having these classes of service: available bit rate (ABR) and
variable bit rate (VBR). You cannot apply per-VC WFQ and CBWFQ to UBR and
UBR+ VCs because both of these service classes are best-effort classes that
do not guarantee minimum bandwidth. When CBWFQ is enabled for a VC, all
classes configured as part of the service policy are installed in the fair
queueing system.
"
http://www.cisco.com/en/US/products/sw/iosswrel/ps1830/products_feature_guid
e09186a0080087a82.html

Second question

Can I configure CBWFQ for physical interface or I should do it only per VC?
Same question for WRED.

Mustafa M Bayramov
 
CISSP
CCNP ,CCDP, Cisco Security Specialist
Network engineer and security analyst
 
Azercell Telecom J.V.
 
Azerbaijan, 370620 Baku, Tbilisi pr. 31/66
Tel: (99412) 982823 /982740 Ext: 34 03
Fax: (+99412) 982825 / 93 73 63
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E-mail: mustafa@azercell.com
url: http://www.azercell.com
 
 
 
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