From: Hunt, Richard (LDN-GIS) (Richard.Hunt@interpublic.com)
Date: Thu Mar 12 2009 - 08:52:59 ARST
Dear All,
I have backup WAN over a provider MPLS that uses GRE tunnels (but it's just a
network with GREs nothing complex). It's hub and spoke in essence. I have a
service-policy that matches my VoIP traffic and is applied to each Tunnel
interface. As far as I could determine it was all marking and sending the
VoIP using LLQ ( I used Netflow to verify this). Now I read about the
'pre-classify' interface command and I'm a little confused as to whether my
receiving tunnel interfaces are able to pass on the original QoS marking
(based on DSCP) and therefore if the rest of the LAN behind can prioritise
this traffic.
My GRE tunnel service-policy is applied outbound on all sites including the
hub site and that seems to give priority based on my match criteria.
Here's the CCO link that has me confused.
http://www.cisco.com/en/US/tech/tk543/tk545/technologies_tech_note09186a00801
7405e.shtml#qoscomm
Can anyone shed any light, has anyone sniffed this on say a LAN Ethernet of a
router that has a GRE to another site? Who knows when you'd use
'pre-classify'?
Thanks in advance.
Richard.
________________________________
Interpublic GIS (UK) Limited | Registered office: Ground Floor, 84 Eccleston
Square, London SW1V 1PX, England | Registered number: 2724363
This message contains information which may be confidential and privileged.
Unless you are the intended recipient (or authorized to receive
this message for the intended recipient), you may not use, copy, disseminate
or disclose to anyone the message or any information contained
in the message. If you have received the message in error, please advise the
sender by reply e-mail, and delete the message.
Thank you very much.
Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Mon Apr 06 2009 - 06:44:04 ART