03-08-2013 06:46 AM - edited 03-11-2019 06:11 PM
Hey Everyone:
Just after some help with an ASA 5510 QoS config for our lab. Trying to set-up a priority queue for Voice and Video traffic, below is the current ASA config. The WAN link is 6mb, trying to limit the Internet traffic to 4mb and save 2mb for the PQ, config below, any help appreciated. Traffic just isn't hitting the PQ
priority-queue outside
queue-limit 512
tx-ring-limit 200
!
class-map Video
description Video
match dscp af31
class-map priority_VoIP
description High Priority = VoIP
match dscp ef
!
policy-map PRIORITY
class priority_VoIP
priority
class Video
priority
policy-map shaping
class inspection_default
inspect pptp
inspect icmp
inspect icmp error
inspect netbios
inspect dns
inspect ipsec-pass-thru
inspect http
inspect sip
class class-default
shape average 4096000
service-policy PRIORITY
service-policy shaping interface outside
Queue Type = BE
Tail Drops = 0
Reset Drops = 0
Packets Transmit = 462212354
Packets Enqueued = 240158
Current Q Length = 0
Max Q Length = 160
Queue Type = LLQ
Tail Drops = 0
Reset Drops = 0
Packets Transmit = 0
Packets Enqueued = 0
Current Q Length = 0
Max Q Length = 0
Please dont post PDF's or links, looking for some proper feedback as i've been labbing this up befoe posting to the forum
cheers
Matt
03-08-2013 07:05 AM
My thoughts are it might be something to do with the class inspection_default being above the class-default. I still need to reference those inspect commands somewhere as i need services like pptp to work from inside to out
Matt
03-08-2013 07:08 AM
Hello Matthew,
Configuration looks good to me,
It just that the Priority queue has not kick in...
As a test have you lower the available bandwith available for the best effort traffic? just to see if that triggers the LLQ
Regards
03-08-2013 07:18 AM
I lowered the number to 2960000 which by my calculation is just under 2mb and still no traffic hitting the PQ. I also removed the class inspection_default with the number at 2960000 and still no joy.
cheers
Matt
03-08-2013 07:25 AM
The strange thing is, with have about 6mb bandwidth, video call's and conferences below 2mb are crystal clear, as we have restricted the other traffic to 4mb max via the shape, almost as if they are getting the reversed 2mb bandwidth, but they don't show up in the LLQ, does anyone have any theories on that?
Matt
03-08-2013 08:59 AM
Hmm,
Strange,
can you share
show service-policy priority
Show service-policy shaping
Regards
03-08-2013 10:19 AM
show service-policy priority has NO output, no error's, just no output
-------
sh service-policy shape
Interface outside:
Service-policy: shaping
Class-map: class-default
shape (average) cir 3584000, bc 14336
(pkts output/bytes output) 13734055/8235687800
(total drops/no-buffer drops) 47123/0
Service-policy: PRIORITY
------
sh service-policy interface outside
Interface outside:
Service-policy: shaping
Class-map: inspection_default
Inspect: pptp, packet 0, drop 0, reset-drop 0
Inspect: icmp, packet 640, drop 8, reset-drop 0
Inspect: icmp error, packet 64, drop 0, reset-drop 0
Inspect: netbios, packet 371, drop 0, reset-drop 0
Inspect: dns _default_dns_map, packet 28474, drop 0, reset-drop 0
Inspect: ipsec-pass-thru _default_ipsec_passthru_map, packet 0, drop 0, reset-drop 0
Inspect: http, packet 1695864, drop 0, reset-drop 0
Inspect: sip , packet 4, drop 0, reset-drop 0
tcp-proxy: bytes in buffer 0, bytes dropped 0
Class-map: class-default
shape (average) cir 3584000, bc 14336
(pkts output/bytes output) 13739572/8241058643
(total drops/no-buffer drops) 47135/0
Service-policy: PRIORITY
Class-map: priority_VoIP
priority
Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/0/0
(pkts output/bytes output) 0/0
Class-map: Video
priority
Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/0/0
(pkts output/bytes output) 0/0
Class-map: class-default
Default Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/47135/0
(pkts output/bytes output) 13739727/8241090250
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