From: gladston@br.ibm.com
Date: Thu Aug 11 2005 - 13:27:02 GMT-3
Hi,
Considering the configs created by AutoQos:
class-map match-any AutoQoS-VoIP-Remark
match ip dscp ef
match ip dscp cs3
match ip dscp af31
class-map match-any AutoQoS-VoIP-Control-UnTrust
match access-group name AutoQoS-VoIP-Control
class-map match-any AutoQoS-VoIP-RTP-UnTrust
match protocol rtp audio
match access-group name AutoQoS-VoIP-RTCP
class-map match-all Select-cos
match cos 4
policy-map AutoQoS-Policy-UnTrust
class AutoQoS-VoIP-RTP-UnTrust
priority percent 70
set dscp ef <-------------------------1
class AutoQoS-VoIP-Control-UnTrust
bandwidth percent 5
set dscp af31
class AutoQoS-VoIP-Remark
set dscp default <-------------------------2
class class-default
fair-queue
ip access-list extended AutoQoS-VoIP-Control
permit tcp any any eq 1720
permit tcp any any range 11000 11999
permit udp any any eq 2427
permit tcp any any eq 2428
permit tcp any any range 2000 2002
permit udp any any eq 1719
permit udp any any eq 5060
ip access-list extended AutoQoS-VoIP-RTCP
permit udp any any range 16384 32767
I am wondering about this:
-On number 3, any packets previous marked with EF are remarked to best effort.
-On number 2, RTP packets are marked with EF.
Suppose RTP packets enters this router with EF marked. There will be two actions, number 2 will select/mark it with EF (which is already marked) and number 3 will select/mark it with best effort.
That does not make sense. What am I loosing?
And, why class-map AutoQoS-VoIP-RTP-UnTrust matches the same packet two times?
Isn't 'match protocol rtp audio' the same as "permit udp any any range 16384 32767"?
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