01-28-2008 12:05 AM - edited 03-03-2019 08:26 PM
I cannot configure LLQ (priority command on the GE port) for voice traffic.
error is shown below:-
policy-map voice_internet
class internet
police cir 150000000 bc 4687500 be 4687500 conform-action transmit exceed-action drop
class voice
priority
police cir 7000000 bc 218750 be 218750 conform-action transmit exceed-action drop
host(config)#int gi4/5
host(config-if)#service-policy ou
host(config-if)#service-policy output voice_internet
priority command is not supported in output direction for this interface
Configuration failed on:
GigabitEthernet4/5
host(config-if)#
Is there any commands or solution to configure QOS for converged voice traffic in my router? Can I use "mls qos" command
Thanks in advance
01-28-2008 02:28 AM
Hi
Which module are you trying to configure this on ?
Jon
01-28-2008 02:40 AM
Hi, sorry I don't know the exact answer to your question, but unless your gigabit becomes congested for like half a second, (very unlikely), you don't need any any qos on such high speed interfaces.
01-28-2008 05:26 AM
I need to prioritize the voice traffic. Is there any Qos method I can do maybe MLS QOS, or MQC ? Actually,what is the purpose of mls qos?
the modules are WS-X6148A-GE-TX Catalyst 6500 48-Port 10/100/1000 GE Mod.,RJ-45.
01-28-2008 05:37 AM
Hi
The WS-X6148A-GE-TX has a 1p3q8t transmit queue structure ie. the 1p is a priority queue so you can map the voice traffic to that queue and it will get preferential treatment. Please see attached link for more details
http://www.cisco.com/en/US/docs/routers/7600/ios/12.2SXF/configuration/guide/qos.html
HTH
Jon
04-30-2008 01:19 PM
If this is for the Egress Queue and you can assign the QOS based on mappings. How do you use a priority queue for voice for the Ingress. Do you use policy-maps? can you use some sort of queuing such as LLQ on a switchport?
Jeremy
05-01-2008 12:52 AM
Yes, this is egress queue. For, the ingress, I didn't put any qos command as it was Ethernet network. I cannot use LLQ on a switchport. The command rejected.
05-01-2008 01:29 AM
Hi,
As queueing is dependent on the specific implementation on a particular module, you need to check first, which number of queues are available and which number of thresholds. Note, not every module has a priority queue per port.
A quick check (in the lab first!) is to use "auto qos voip [trust|ciscophone]". This will essentially generate the appropriate configuration commands available from 12.2(33)SXH. You can modify them for your production environment. Have a look at "Using AutoQoS" for details
and at the command reference specifying the supported modules.
http://www.cisco.com/en/US/docs/ios/qos/command/reference/qos_a1.html#wp1011499
Another quite good source of information is the "Enterprise QoS Solution Reference Network Design Guide Version 3.3"
http://www.cisco.com/application/pdf/en/us/guest/netsol/ns432/c649/ccmigration_09186a008049b062.pdf
Check the section for the Catalyst 6500, which will give you queueing information for various switching modules.
Hope this helps! Please use the rating system.
Regards, Martin
05-01-2008 05:49 AM
We are currently running 12.2(18)SXF12a code. I have been debating on whether for the over 300Mbps worth of voice traffic is it worth migrating to SXH code for the auto qos voip feature for setting up the queues. Does anyone run WAN features on there 7600 such as BGP and OC circuits and have the SXH code?
05-02-2008 02:51 PM
Hi,
You likely do not need to upgrade. auto qos is just an example of how to get a voip optimized QoS configuration. The config can then be applied to your production environment - with or without modifications.
Regards, Martin
05-01-2008 06:47 AM
Hi, to the person that low rated my post above, evidently you have not come yet to the conclusion that in practice on gigabit interfaces, QoS in the form of LLQ for voice is not necessary, as things will work exactly the same whatever way you configure it.
Go ahead and try, report your findings here, but be fair and accurate a next time.
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