From: Joseph L. Brunner (joe@affirmedsystems.com)
Date: Fri Mar 13 2009 - 14:24:52 ARST
I think they invented Cat 6509 QOS for consultants to get some extra billable
hours
Most 6509's are maytag repairmen with multiple phd's in mechanical
engineering... they have way to much brains with nothing to use them on...
First run prtg or opmanager on the chassis for a week... If your system
traffic EVER exceeds 10% during production you're good. I would put some
control plane security for other nasty things to prevent dos's on the box.
Search emule... there are some nice networkers presentations floating around
on security the 6509 from dos's with cpp
-Joe
________________________________
From: dave dave [mailto:funccie@gmail.com]
Sent: Friday, March 13, 2009 1:02 PM
To: Joseph L. Brunner
Cc: Cisco certification
Subject: Re: [Real World] 6500 QoS making me crazy..:(
Hi Joseph & All Expert,
Thanks Joseph for sharing your experience. I laso wanted to know if i stick to
PFC QoS with PQ, how can i ensure in 100% of voice traffic load also i can
configure my box such a way that my Control Plane traffic wont lost...is it
possible????
Regards
Dave
On Fri, Mar 13, 2009 at 5:17 PM, Joseph L. Brunner
<joe@affirmedsystems.com<mailto:joe@affirmedsystems.com>> wrote:
This has never been in an issue in over 100 sites I have worked on, deployed
and tested the 6509E, etc.
My experience, no matter how hard you are driving the network (oracle rac, sun
backups, Symantec backups, etc) the 6509 always has another 50 to 100Mbps to
give...
We once tried this (you'll like this)- a perl script to dump data from 3
Redhat boxes to a single port where a cisco ip phone was on a 6509 Gigabit
port... I wanted to convince management to invest the consulting hours in a
qos deployment on about 9 6509E's... I could not get the voice call to jitter
at all... he was on the phone with me talking fine even under that stress (and
the packets it made it there, per span!!!)
Like I said these switches always have something more to give even on the
cheaper non-server asic'd blades... seems it doesn't let anyone flow use it
all.
-Joe
-----Original Message-----
From: nobody@groupstudy.com<mailto:nobody@groupstudy.com>
[mailto:nobody@groupstudy.com<mailto:nobody@groupstudy.com>] On Behalf Of dave
dave
Sent: Friday, March 13, 2009 4:47 AM
To: Cisco certification
Subject: [Real World] 6500 QoS making me crazy..:(
Hi Expert,
*Catalyst 6500 Release 12.2SXH *
SERVER-|-ACCESS-Router---L2-link---1g----------|
|
SERVER-|-ACCES-Router---L2-link---1g-------------|---*1g--Dis-SW6500---10g*--
------L2-Link--------------------------Core
Router
|
SERVER-|-ACCES-Router---L2-link---1g-------------|
If i configure priority Queue which can take 100% BW, so it means priority
traffic from different Access-Router aggregated to 100% of uplink of
Aggregation switch to Core roure , all other traffic including control plane
will be dropped. Is there is any work around for this. I can only do
hardware-switched QoS.
6500 QoS
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configur
ation/guide/qos.html
6500 QoS Note from above URL
For hardware-switched traffic, PFC QoS does not support the bandwidth,
priority, queue-limit, or random-detect policy map class commands. You can
configure these commands because they can be used for software-switched
traffic.
Does it mean that i need to disable mls switching to do the harware based
swithing. I cant do the software based switching because that will not be
good for the heavy traffic load considering my network, which may put hugh
CPU load on my 6500 aggregation box.
Regards,
Dave
Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4
: Mon Apr 06 2009 - 06:44:05 ART