From: Swan, Jay (jswan@sugf.com)
Date: Thu May 03 2007 - 14:42:36 ART
IGP packets (EIGRP, OSPF, etc.) are classified internally with the
pak_priority mechanism, and are given their own special treatment.
BGP packets and stuff like GRE keepalives and IKE keepalives are
automatically marked as CS6, but are not given special priority
automatically; normally you want to give them protected bandwidth. I
think Cisco's QoS SRND recommends 3% of link bandwidth, but I haven't
double-checked.
If you search on CCO for "pak_priority" there's lots of stuff on it.
Jay
#17783
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
mam phuquoc
Sent: Thursday, May 03, 2007 10:15 AM
To: ccielab@groupstudy.com
Subject: QOS class-map
Hello,
I've been wondering if you need to create a class-map for routing and
switch
traffic, such as route updates, or switch bpdu etc. My understanding is
when you apply a policy map to an interface, automatically 75 of that
bandwidth is usable for your traffic classes, and the remaining 25
percent
for your default class and routing and switch traffic tagged with cos 6
and
7. Is there a need to create a class map for it?
If you explicitly specify a default class map in your policy, will all
traffic that don't match fall into that class, or does it still go to
the
implicit class default that shows up when you do a show policy map
interface
command?
Thanks in advance for your response.
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