From: André Bersvendsen (an-bersv@xxxxxxxxx)
Date: Thu Apr 25 2002 - 05:48:16 GMT-3
I think the answer is 5.
The reason for this answer is that it makes no sense to have user
traffic with higher priority than routing protocols.
If you fill up your link with user traffic with precedence 7 then the
network will be unable to forward i.e. OSPF or EIGRP packets.
So you loose the routing in your network and then the destination for
the user traffic is lost.
Then no traffic is going around in your network and the routing protocol
will be able to build the routing tables again. - User traffic may fill
up the lines again and you will again loose routing capabilities in your
network.
This will give you bad performance.
Some might say that the solution is to use static routes. Well that is a
solution but it is hard to manage and you also trough out all precedence
6 traffic when you remove dynamic routing. So why set the precedence
higher than 5 if you do not have anything that is using precedence 6 or
7? ... - It is no good reason...
Regards,
Andri Bersvendsen
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Ahmed Mamoor Amimi
Sent: 25. april 2002 05:27
To: ccielab@groupstudy.com; Peter van Oene
Subject: Re: precedence
So what should we use when we are told that prioritize traffice so that
they
are escaped first.... 5 or 7.... what is our limit.
-Mamoor
----- Original Message -----
From: Peter van Oene <pvo@usermail.com>
To: Ahmed Mamoor Amimi <mamoor@ieee.org>; <ccielab@groupstudy.com>
Sent: Wednesday, April 24, 2002 11:38 PM
Subject: Re: precedence
> control traffic generally flows with 111. Hence, if you set your data
> traffic to 111, your routers with no longer be able to prioritize
control
> packets which can have rather negative effects when the dropping
> begins. Many times 111 and 110 are also handled with equal priority
which
> may be the reason why cisco advises against both.
>
> Pete
>
>
> At 08:07 PM 4/24/2002 +0500, Ahmed Mamoor Amimi wrote:
> >Can some expert tell me why it is not recommended precedence value of
6
and 7.
> >I have seen at CCO that it will produce potential problem with the
core
data
> >traffic like routing and other signalling.... if this is so then why
these
> >value are given to be configured.
> >
> >
> >
> >-Mamoor
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