From: Brian Hescock (bhescock@xxxxxxxxx)
Date: Thu Jan 25 2001 - 18:58:27 GMT-3
For real-world concerns, I believe CAR is also less cpu intensive than
using route-maps to set ip precedence.
B.
On Thu, 25 Jan 2001, Michael E. Flannagan wrote:
> This is the difficult way to do this -- CAR is the easiest solution. For
> your rate policy (that's the first number), simply define the bandwidth of
> the interface. normal and excess bursts won't matter, because all traffic
> will meet the "conform-action" and you can just set the
> "exceed-action" the same as the conform-action (just to be safe). The
> conform action should be a set-prec-trans <ip precedence value>
>
> ------------------------------------------------------------
> C i s c o S y s t e m s Michael E. Flannagan
> | | Network Consulting Engineer
> ||| ||| Research Triangle Park, NC
> ||||||| ||||||| (919) 392-4550
> .:|||||||||||:.:|||||||||||:. mflannag@cisco.com
> ------------------------------------------------------------
>
>
>
> On Mon, 22 Jan 2001, Ronnie Royston wrote:
>
> > Something like below should do what you asked.
> >
> > interface Ethernet0
> > ip address 137.7.50.5 255.255.255.0
> > ip policy route-map SET_IP_PREC
> > !
> > access-list 120 permit tcp any any eq telnet
> > access-list 120 permit tcp any any eq ftp
> > !
> > route-map SET_IP_PREC permit 10
> > match ip address 120
> > set ip precedence flash
> >
> > Here's an exerpt from the DocCD:
> >
> > Using the ToS bits, you can define up to six classes of service. Other
> > features configured throughout the network can then use these bits to
> > determine how to treat the packet in regard to the type of service to grant
> > it. These other QoS features can assign appropriate traffic-handling
> > policies including congestion management strategy and bandwidth allocation.
> > For example, although
> > IP Precedence is not a queueing method, queueing methods such as weighted
> > fair queueing (WFQ) and Weighted Random Early Detection (WRED) can use the
> > IP Precedence setting of the packet to prioritize traffic.
> >
> > By setting precedence levels on incoming traffic and using them in
> > combination with the Cisco IOS QoS queueing features, you can create
> > differentiated service. You can use features such as policy-based routing
> > (PBR) and CAR to set precedence based on extended access list
> > classification. These features afford considerable flexibility for
> > precedence assignment. For example, you can assign precedence based on
> > application or user, or by destination and source subnetwork.
> >
> > -----Original Message-----
> > From: Dezso Csonka [mailto:dcsonka@cisco.com]
> > Sent: Monday, January 22, 2001 2:13 AM
> > To: ccielab@groupstudy.com
> > Subject: wfq
> >
> >
> > Hi,
> >
> > Is it possible to assigne priority to WFQ? I mean that can I assigne =
> > traffic like ftp or telnet to WFQ with different priority just like in =
> > priority queuing?
> > The problem is that I dont understand how WFQ works.
> >
> > Thanks
> >
> > Dezs
> >
> >
> >
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