From: Sam.MicroGate@usa.telekom.de
Date: Wed Feb 26 2003 - 17:34:12 GMT-3
Not all voice traffic carries a precedence of 5. Therefore, the first access
control list is a better choice.
Sam
-----Original Message-----
From: Umair Hoodbhoy [mailto:umair@cisco.com]
Sent: Sunday, February 23, 2003 7:14 PM
To: ccielab@groupstudy.com
Subject: Matching IP Precedence in VoIP ACLs
Hier,
Searching through the archives of this group and various docs I've always
come across this ACL for matching VoIP traffic:
access-list 101 permit udp any any range 16384 32767
My question is why don't people use this instead:
access-list 101 permit udp any any range 16384 32767 precedence critical ?
IP Precedence 5 is 'critical' and my understanding is that VoIP appliances
like IP Phones transmit IP with that precedence. Is this a fair question to
ask a proctor or should we know this before walking into the exam?
TIA,
-- Umair
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