From: Kirby, Tracy (Tracykirby@catholichealth.net)
Date: Wed Aug 02 2006 - 13:02:22 ART
I was just reading a Cisco SRND document,
www.cisco.com/univercd/cc/td/doc/solution/esm/qossrnd.pdf, which
highlights QOS and IP routing. On page 1-21, the document references
"By default, Cisco IOS software marks IGP and BGP protocols to DSCP
CS6."
Another document I found discusses setting the precedence to 6,
http://www.cisco.com/warp/public/105/rtgupdates.html.
HTH,
Tracy Kirby
CCIE(tm) No. 16320
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Smith, Jason
Sent: Wednesday, August 02, 2006 9:35 AM
To: CCIEBOB; ccielab@groupstudy.com
Subject: RE: TOS reserved bits 6/7 and routing protocols
Yes this is true, it uses ip precedence 6. I am not sure where to find
documentation on it but I recently put a sniffer on an Ethernet segment
between two routers running OSPF and BGP. Looking at the update packets
it indeed had ip precedence 6.
Thanks,
Jason Smith
CCIE #12097
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
CCIEBOB
Sent: Wednesday, August 02, 2006 10:59 AM
To: ccielab@groupstudy.com
Subject: TOS reserved bits 6/7 and routing protocols
Hello all. I was recently told that some routing protocols (BGP) uses
the reserved TOS bit for routing protocol establishment and updates. I
could not find any documentation to support this. Does any one know if
this statement is correct, and if so where can I find documentation on
it? TIA. Bob
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