10-05-2010 08:21 AM - edited 03-04-2019 10:00 AM
Hi, thanks in advance for any help you could give me.
I'm trying to configure QoS between my US site and my UK site. Here are the details:
1. Leased line has a bandwidth of 3Mbps.
2. I have 5 queues: Voice (ef), Control protocols (af41), Video (af31), Citrix (af21), and default
Here's the relevant config. Tagging is done on the inbound interface and I'm only showing the outbound interface here.
The problem I am experiencing is that class-default traffic sometimes uses up all the bandwidth to the point that it affects the quality of the other traffic. Keep in mind that this link is the bottleneck. Everything else is gigabit.
class-map match-any AF41
match dscp af41
class-map match-any EF
match dscp ef
class-map match-any AF21
match dscp af21
class-map match-any AF31
match dscp af31
!
!
policy-map To_UK
class EF
priority 512
class AF41
bandwidth 256
class AF31
bandwidth 768
class AF21
bandwidth 1024
class class-default
policy-map To_UK_Shaper
class class-default
shape average percent 95
service-policy To_UK
!
interface FastEthernet0/0/0
description to SAVVIS UE to UK
bandwidth 3088
ip address 192.168.100.1 255.255.255.248
duplex full
speed 100
service-policy output To_UK_Shaper
!
10-05-2010 09:04 AM
I will change two thing in your configuration
policy-map To_UK
class EF
priority 512
class AF41
bandwidth 256
class AF31
bandwidth 768
class AF21
bandwidth 1024
class class-default
bandwidth percent 1 ! make the default to 1% during congestion
policy-map To_UK_Shaper
class class-default
shape average 3000000 ! shape the interface to 3Mb
service-policy To_UK
10-05-2010 09:27 AM
I'll try that and let you know. Thank you.
I thought that the 'bandwidth' statement guarantees a minimum bandwidth. I don't understand how this could work but I'll give it a shot and test it out.
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