ivan when you do the priority command, it strictly abides that the
application you put in with that command would get that specified BW, and
beyond that, packets will be drop. it should be used in delay-sensitive
applications, in your case VoIP. the bandwidth command is used to specify
that this application should get at least this amount of BW, what I say is
this minimum amount of bandwidth. just remember that all of this will only
work when your link is congested. if not, its FIFO. and do not set the IP
precedence of your other traffic to 0, because not all applications are
supposedly lowly. you might get into trouble with that with your other
applications. :) you can also set wred with the other classes, but just
remember wred isn't for voice. example:

access-list 101 permit udp any any range 16384 32767 - for voice
access-list 102 permit tcp any any

class-map voice
match access-group 101

class-map tcp
match access-group 102

....

policy-map voip
class voice
priority 100

class tcp
bandwidth 64

....

interface atm1/0.100 point-to-point 
pvc1/11
service-policy out voip



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