02-27-2006 07:22 AM - edited 03-03-2019 02:01 AM
Hi there!
I have an 6500 IOS switch where i am using a policy for Voip trafic and i works for serial interface but not for my Gigabit interface
!
class-map match-all VOICE-CONTROL
match ip dscp cs3
class-map match-all VOICE
match ip dscp ef
!
!
policy-map WAN
class VOICE
priority percent 33
class VOICE-CONTROL
bandwidth percent 2
class class-default
fair-queue
can somone explain why this does not work on an giagbit interface ??
02-27-2006 08:22 AM
Hi,
The catalyst 6500 does not support WFQ - weighted fair queuing. This feature is only supported in the 6k on wan ports (flex wan and osm modules), which is why it works on your serial interface. QoS on the 6500's are on done on the PFC in hardware. The queue architecture and qos queuing features - WRR and WRED are implemented with fixed configurations on the asics. There are several qos features that are configurable, even though they are not supported - fair-queue being one of them. You have the options of implementing WRR along with priority queuing and as a queuing method, but not fair-queue.
For output scheduling, please refer to the following document for supported features:
http://www.cisco.com/warp/customer/473/73.html
HTH,
Bobby
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02-27-2006 10:52 PM
Hi
Just want to say thank you, now i will try to see if i can understand the the doc , you posted to
Thanks
02-27-2006 08:27 AM
Hi,
I think a bit more info is required. Can you provide the output of:
sh policy-map int gx/y
sh run int gx/y
Do you trust dscp on incoming ports with "mls qos trust dscp"
Rgds
E.
02-27-2006 10:47 PM
Hi Again
Yes i trust DSCP on incoming int, ( it works on serial int,)
here is the out put for sh policy map and int. config . i have also put in the serial so you can see that it works on serial
sh run int gigabitEthernet 7/45
Building configuration...
Current configuration : 213 bytes
!
interface GigabitEthernet7/45
description Link til net 10.190.0.0 (DSB skolen) Colt-CirID:CPHCPHLE-065339
bandwidth 10000
ip address 172.30.9.9 255.255.255.252
speed 10
duplex full
mls qos trust dscp
end
##########################################################################
#sh policy-map interface gigabitEthernet 7/45
GigabitEthernet7/45
Service-policy output: WAN
queue stats for all priority classes:
queue size 0, queue limit 825
packets output 0, packet drops 0
tail/random drops 0, no buffer drops 0, other drops 0
Class-map: VOICE (match-all)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: ip dscp ef
Priority: 33% (3300 kbps), burst bytes 82500, b/w exceed drops: 0
Class-map: VOICE-CONTROL (match-all)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: ip dscp cs3
queue size 0, queue limit 50
packets output 0, packet drops 0
tail/random drops 0, no buffer drops 0, other drops 0
bandwidth 2.00%, kbps 200
Class-map: class-default (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: any
queue size 0, queue limit 1625
packets output 0, packet drops 0
tail/random drops 0, no buffer drops 0, other drops 0
Fair-queue: per-flow queue limit 406
#####################################################################
#sh ru interface serial 3/1/0
Building configuration...
Current configuration : 219 bytes
!
interface Serial3/1/0
description 34Mb Link til 10.30.1.72 interf.1/0 (Fredericia St.) HK 261125
bandwidth 34010
ip address 10.170.0.1 255.255.0.0
framing g751
dsu bandwidth 34010
service-policy output WAN
end
#sh policy-map interface serial 3/1/0
Serial3/1/0
Service-policy output: WAN
queue stats for all priority classes:
queue size 0, queue limit 831
02-28-2006 03:43 AM
Thanks for posting the config.
What I find strange is that your service-policy does not appear in the output of the sh run int command, yet when you do sh poli int g7/45 you get the output.
I take it you have configured the port as no switchport. I have noticed on 6500s that sometimes the ports accept an ip address even though they may not have been defined as routed ports. And what is more annoying the command does not appear in the sh run output.
I have applied similar commands onto a test port and it appears on mine..
class-map match-all test
match protocol rtp
policy-map test
class test
priority percent 33
class class-default
fair-queue
interface GigabitEthernet1/5
ip address 192.1.0.1 255.255.255.0
speed 10
duplex full
mls qos trust dscp
no cdp enable
spanning-tree portfast
spanning-tree guard root
service-policy output test
end
GigabitEthernet1/5
Service-policy output: test
queue stats for all priority classes:
queue size 0, queue limit 825
packets output 0, packet drops 0
tail/random drops 0, no buffer drops 0, other drops 0
Class-map: test (match-all)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: protocol rtp
Priority: 33% (3300 kbps), burst bytes 82500, b/w exceed drops: 0
Class-map: class-default (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: any
queue size 0, queue limit 1675
packets output 0, packet drops 0
tail/random drops 0, no buffer drops 0, other drops 0
Fair-queue: per-flow queue limit 418
Also to clarify another point. Are you saying that it does not work because the service-policy does not appear on the sh run int output?
Rgds
E.
02-28-2006 04:58 AM
Hi Again ,,
Sorry my mistake it is in the config , i was cut- past from an old config,
the interface is a routed interface, it is used the same way as serial interface 3/1/0 byt our line supply Ethernet L2 Wan link.
i am saying that there is no hit in the sh polycy - map not even in the default class.
as i understand untill now it seems like i have to buy OSM GE wan module to make this work , but they are wery expencive $$$$$$$
interface GigabitEthernet7/45
description Link til net 10.190.0.0 (DSB skolen) Colt-CirID:CPHCPHLE-065339
bandwidth 10000
ip address 172.30.9.9 255.255.255.252
speed 10
duplex full
mls qos trust dscp
service-policy output WAN
end
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